The Role of 7-Membered Nitrogen Heterocycles in Drug Discovery: Microstate Management, Conformational Bias, and Developability Trade-offs (with Research Selection Navigator and Product Tables 1–3)
The Role of 7-Membered Nitrogen Heterocycles in Drug Discovery: Microstate Management, Conformational Bias, and Developability Trade-offs (with Research Selection Navigator and Product Tables 1–3)
Introduction
7-membered N-heterocycles—as a structural module—are often used because:
1. They help tune pKa / salt form / solubility (making molecules “easier to formulate” and “easier to move in and out of biological systems”);
2. They offer richer conformational and 3D shape diversity (helping a molecule “find a suitable pose” in a protein pocket);
3. Recent advances in synthesis and medium-ring construction have made these “medium-ring scaffolds” more accessible—so they show up more frequently in new compounds and new programs.
The discussion below follows these three threads: first, clarify what 7-membered N-heterocycles are and what families exist; then explain why they are useful and what risks must be managed; finally, summarize practical synthetic progress, and ground selection decisions with a product navigator and representative products.
1. What Is a “7-Membered Nitrogen Heterocycle”?
A 7-membered ring means the ring contains seven atoms in the ring (nitrogen counts as one of the seven).
A nitrogen heterocycle means that among those seven ring atoms, at least one is nitrogen.
Practical naming tips:
(a) “-ane” often indicates a more saturated / amine-like ring (e.g., azepane, diazepane).
(b) “-ine” often indicates a more unsaturated / double-bond-containing ring (e.g., azepine, diazepine).
The “Two Major Classes + Adjacent Family” of 7-Membered N-Heterocycles
Category | Representative scaffolds (examples) | Key structural/mechanistic points | What they are most commonly used to solve | Common risks & key validation points |
A | Saturated 7-membered amine rings: a physicochemical handle | Azepane (azacycloheptane), diazepane (diazacycloheptane; positional isomers such as 1,3-/1,4- are common) | Protonatable N site(s) + moderate flexibility → well suited for “dialing properties into the right window” | Tune basicity (pKa) / salt form accessibility → affects solubility and formulation; fine-tune polarity/PSA/logD → affects oral absorption, tissue distribution, and permeability balance | More complex microstates: conformation + protonation/salt form overlap; diaza rings may have multi-site protonation / multiple microstates → property prediction and polymorph/salt development need extra caution |
B | Fused/benzo 7-membered N-heterocyclic medium rings: conformational bias + binding scaffold | Benzodiazepine (BZD: benzene-fused 7-membered diaza ring), dibenzoazepine (a central 7-membered N-containing medium ring fused to two benzene rings; tricyclic framework) | Fusion/rigidification reduces degrees of freedom → more defined 3D shape and more repeatable interaction geometry (like a “conformational lock”) | Scaffold choice when 3D shape and directional interactions are needed; repeatedly appears across targets (receptors/channels/transporters), often discussed as part of “privileged scaffold” families | Rigidification improves pose control but can reduce tunability: solubility/saltability may be unfriendly; may require substitution, side-chains, and salt strategies to restore developability |
Adjacent family | 7-membered rings containing both N and O/S | Benzoxazepine / benzothiazepine, etc. | Also “fused medium-ring systems,” but with different heteroatom combinations → different electronic effects, polarity, and interaction patterns | Maintain the fused 3D framework while offering different polarity and interaction profiles; often used as scaffold swaps in methods and medicinal chemistry literature | Still requires managing microstates, substituent effects, and overall ADME trade-offs; avoid concluding solely from “more heteroatoms = more polar = better” |
Reminder:
It is true that “7-membered N-heterocycles can tune pKa/solubility/conformation,” but the outcome is highly dependent on:
1. N type and protonatability (amine-like vs weaker basic environments),
2. N substitution pattern (whether a key HBD/HBA is removed or changed),
3. Nearby electron-withdrawing/donating groups (altering pKa and interaction geometry),
4. Overall molecular topology and flexibility (possible entropy penalties and non-specific binding risks).
2. Why Are 7-Membered Rings “Different”?
Design trade-offs and validation checkpoints for 7-membered rings
What changes structurally | Potential design benefit (why it helps) | Common risk (why it becomes “more complex”) | How to validate / what controls to run |
Larger conformational space: 7-membered rings can adopt multiple low-energy conformers (e.g., twist-chair), and can “choose” one within a relatively shallow energy basin to match a binding conformation. By contrast, 6-membered rings are often chair-dominant. | Better pocket fit: slight twisting can align H-bond vectors and hydrophobic/aromatic faces (“pose is adjustable”). In some systems, the receptor effectively “selects” one conformer for binding. | Not necessarily stronger binding: more freedom often means the ligand must be “locked” upon binding → conformational entropy penalty. So “better at finding a pose” ≠ “automatically higher affinity/selectivity.” | (1) Run rigidification / conformational locking controls (fusion, adding a double bond, bridging, ring swap) to see whether activity/selectivity improves (testing the entropy-penalty hypothesis). (2) Compare conformers before/after binding: NMR/computation (low-energy conformer distributions) linked with activity data. |
More microstates: for N-containing 7-membered rings, beyond conformation you must also consider protonation/salt forms/microscopic pKa (especially diaza rings with different N sites). One molecule may exist as a mixture of multiple microstates. | Finer property “knobs”: by controlling which N is protonatable, where pKa sits, and which salt form to choose, solubility/formulation window and permeability balance can be tuned more precisely. | Harder prediction and development: exposure, polymorph/salt form behavior, permeability, metabolism, and stability can become more sensitive to microstates → batch variability or developability risks. | (1) Make pKa/salt-screening an explicit step in the workflow. (2) Use matched controls: mono-N vs di-N, N-substituted vs unsubstituted, to quantify how HBD/HBA and microstate shifts drive properties. |
Fusion/rigidification strongly collapses conformational diversity for “soft 7-membered rings”: fusing to an aromatic ring (e.g., benzodiazepine = benzene + fused 7-membered diaza ring) makes the scaffold more rigid and predictable. | Conformational lock + shape scaffold: easier to form a stable, repeatable pose; useful when 3D shape and directional interactions are required; aligns with the “privileged scaffold” rationale. | Reduced tunability: rigidification can improve control but may sacrifice solubility/saltability, or reduce pocket adaptability. | (1) Compare “same pharmacophore: soft ring vs fused rigid scaffold” to test whether rigidification reduces entropy penalty and improves selectivity/exposure. (2) If discussing “privileged scaffolds,” describe as “recurs across multiple targets,” not “guaranteed higher hit rate.” |
3. A Quick Selection Guide: Three Common “Use Modes” of 7-Membered N-Heterocycles
Use mode (tier) | Representative scaffolds | Primary purpose | Risk / what must be confirmed | Representative examples |
A | Soft and tunable: physicochemical property knob | Azepane, diazepane (e.g., 1,4-diazepane) | Tune pKa / salt form → affects solubility and formulation; without major scaffold changes, fine-tune polarity/PSA/logD → affects absorption and distribution | More complex microstates (conformation × protonation × salt form); overly high pKa may reduce permeability and increase “ion trapping” tendency and non-specific binding risk → validate a full set: pKa, logD–pH, solubility/permeability | Suvorexant (a DORA containing a 1,4-diazepane); Ripasudil (K-115; contains a 1,4-diazepane-derived fragment; launched in Japan 2014-12) |
B | Rigid and well-established: conformational bias / fused scaffold | Benzodiazepine; dibenzoazepine/dibenzazepine (tricyclic, central 7-membered N-ring) | Fusion/rigidification collapses conformers → more concentrated shape and repeatable interaction geometry; classic scaffold for iterative SAR across many targets (often CNS) | Rigidification increases predictability but reduces tunability: solubility/saltability may worsen; activity spectrum may broaden → run parallel solubility/permeability tests and early selectivity/off-target panels | Classic BZDs: GABA_A PAMs (e.g., diazepam family); tricyclic TCAs: imipramine (dibenzoazepine); antiepileptic lineage: carbamazepine (dibenzoazepine derivative; Na+^++ channel related) |
C | High-payload: the PBD payload layer in ADCs (Antibody–Drug Conjugates) | PBD (pyrrolobenzodiazepine) and PBD dimers | Aim for extremely high potency per unit dose: DNA minor-groove binding/crosslinking ultra-potent payloads; leverage targeted delivery to “trade delivery for killing power” | Therapeutic window is the key: controlled by targeted delivery + linker stability/release kinetics + DAR/distribution to manage systemic toxicity | Tesirine = SG3249 (linker-payload), releases SG3199 (PBD dimer) upon cleavage; Loncastuximab tesirine-lpyl (Zynlonta): CD19 ADC, FDA accelerated approval 2021-04-23 (tesirine = SG3249 → releases SG3199) |
4. Project Pitfalls Checklist: The “Minimum Validation Set” Mapped to Key Knobs
Knob / question to focus on | Minimum validation set (what to do first) | Main risk points | Recommended control design |
Conformation/shape matching (soft ring vs rigidified) | Conformer distribution assessment (computation / optional solution NMR) + link to activity/selectivity; if structures exist, use them to rationalize SAR | Higher freedom → conformational entropy penalty; multiple conformers → harder property/polymorph prediction; “better at finding a pose” ≠ stronger | Paired soft vs rigid controls: under the same pharmacophore, introduce fusion/bridging/double bonds/switch to a more rigid ring system; compare net changes in activity/selectivity/exposure |
pKa / salt form / solubility (microstate management) | pKa (experimental or reliable prediction) + logD–pH curve; salt screening; solubility (kinetic/equilibrium) + permeability (PAMPA/Caco-2) as a package | High pKa → lower permeability/ion trapping tendency; diaza microstates → salt form/polymorph/batch variability risk | Pair controls: mono-N vs di-N; N-substituted vs unsubstituted; compare salt forms/substitution patterns within the same scaffold to pinpoint whether pKa or solubility is dominating |
Metabolic routes/clearance (N-related metabolism & DDI) | Microsomal/hepatocyte stability; metabolite ID (when needed); CYP inhibition (and induction when needed) | Uncertain metabolite spectrum; N-dealkylation/N-oxidation/adjacent oxidation may dominate; potential CYP inhibition/induction and DDI risk (depends on structure + exposure) | Use “block-the-site / dealkylation” controls to lock main clearance routes; evaluate exposure-activity relationships in parallel to avoid misreading “fast metabolism” as “low potency” |
ADC payloads (PBD etc., ultra-potent payload layer) | Plasma stability/release kinetics; DAR distribution; free payload monitoring; in vivo distribution and toxicology (when needed) | Narrow therapeutic window; linker stability/release controls systemic toxicity and bystander effect; discussing potency alone can be misleading | Validate “payload strength” paired with “delivery/release”: compare different linkers and DAR designs for the same payload to find an acceptable therapeutic window |
5. Why 7-Membered N-Heterocycles Are More Common Now: Three Synthetic Routes That Make Them Easier to Access
Common route | How it’s done | Why 7-membered rings become easier to obtain |
Ring expansion | Build a 5- or 6-membered ring first, then “expand by one” to a 7-membered ring | Converts the difficulty of “directly closing a 7-membered ring” into a more controllable rearrangement/migration step |
Cascade / domino / radical relay processes | Link multiple steps into a single operation to assemble the scaffold in one go | Fewer steps and higher scaffold diversity; well suited to parallel library generation |
Photochemical / mild catalytic methods | Use light or mild catalysis to open new pathways | Better functional-group tolerance and more modular assembly; friendlier to complex substrates |
6. Product Navigator | Which Table to Check First for 7-Membered N-Heterocycle–Related Products (Tables 1–3)
Research need / scenario | Check this table first | Why this table fits | What you’ll find (representative entries) |
You need ready-to-use reference drugs / positive controls for cell, enzymatic, or receptor assays (especially CNS-related: receptor panels, ion channels, behavior-oriented pre-work) | Table 1 | Approved drugs (CNS/psychiatry focus) | Table 1 concentrates the “mature reference set” most frequently used in labs—ideal for positive controls, cross-validation, and assay/method establishment; also convenient for “same target / same scaffold” comparisons within a class |
You are working in epilepsy and want to compare in vitro / in vivo differences within the same lineage (activity, metabolism, exposure, tox pre-work) | Table 1 | Approved drugs (CNS/psychiatry focus) | A complete scaffold lineage in one place—best for parallel controls and “metabolism / prodrug effect” comparisons, reducing noise from cross-system differences |
You are on a peripheral target / non-CNS program and want to introduce a “7-membered N-heterocycle fragment” to optimize properties and conformation (solubility, pKa, permeability, distribution) | Table 2 | Approved drugs (other therapeutic areas) | These drugs align better with peripheral indications and dosing contexts, serving as realistic references for “achievable property/exposure targets”; suitable as reference drugs or structural inspiration |
You are doing an ophthalmology project (local dosing) and need ROCK-pathway positive/active controls | Table 2 | Approved drugs (other therapeutic areas) | An ophthalmic approved drug with a clearly defined salt form—well suited as a positive control for cell/tissue assays and formulation-oriented pre-work |
You are running antibacterial work and need a fluoroquinolone positive control, or want to study how a “7-membered N-ring side chain” affects permeability/efflux/activity | Table 2 | Approved drugs (other therapeutic areas) | An approved antibacterial reference—appropriate for MIC testing, kill curves, resistant-strain controls, and mechanism validation |
You are in oncology/DNA repair and need a PARP inhibitor as a positive control (cell proliferation, DNA-damage markers, synthetic lethality systems) | Table 2 | Approved drugs (other therapeutic areas) | Provides an established target-matched reference, helping define the assay window and align with literature outcomes |
You are doing allergy/inflammation experiments and need an H1 antihistamine control (in vitro receptor assays, inflammation models, nasal/ocular local models) | Table 2 | Approved drugs (other therapeutic areas) | A ready antihistamine control—useful for receptor/functional assays and model validation |
You want to modify/build libraries around 7-membered N-heterocycles and need cores, protected forms, and functionalized building blocks for rapid SAR expansion (N-substitution, side-chain libraries, linkers) | Table 3 | Synthetic building blocks / scaffolds / intermediates / protecting groups / standards | Table 3 provides “upstream, hands-on” materials usable directly in parallel synthesis: core motifs (soft rings/lactams), Boc-protected blocks, amino-functionalized blocks, and fused-scaffold starting points |
You need fused 7-membered scaffold references / method standards (e.g., GC standards, structure confirmation, impurity ID, scaffold recognition) | Table 3 | Synthetic building blocks / scaffolds / intermediates / protecting groups / standards | Table 3 includes scaffold references and standards—better suited for analytical method development, structural confirmation, and benchmarking |
You want a focused “property-knob” study: systematically scan pKa/solubility/permeability/salt accessibility using soft 7-membered amines/diaza amines (before choosing a target) | Primarily Table 3 (building blocks); pair with Table 2 if needed (real-world references) | Table 3 offers controllable variables (cores/protected forms) for systematic scans; Table 2’s peripheral approved drugs serve as references for “target property windows” | Table 3: HMI / homopiperazine / Boc-diazepane / functionalized blocks; Table 2: ripasudil / tolvaptan / ivabradine / bazedoxifene |
Table 1 | Approved Drugs (for Experimental Positive Controls)
(CNS/psychiatry focus: antipsychotics / antidepressants / antiepileptics)
Category | CAS No. | Aladdin Cat. No. | Name | Specification / Purity | Product features / selection notes (7-membered N-heterocycles) |
Approved drug | Antipsychotic | Fused 7-membered diaza ring (BZD-derived) | 132539-06-1 | Olanzapine | Moligand™, ≥99% | A representative antipsychotic; the fused 7-membered N-heterocycle core reflects a “conformational locking + aryl recognition” design logic; commonly used for receptor panels, SAR benchmarking, and metabolism/exposure controls. | |
Approved drug | Antipsychotic | Dibenzothiazepine (fused 7-membered ring) | 111974-69-7 | Quetiapine | Moligand™, ≥98% | Antipsychotic; a typical “fused 7-membered ring + basic side-chain center” combination; useful for receptor-spectrum and CNS exposure/metabolism comparison. | |
Approved drug | Antipsychotic | Dibenzo-diazepine (privileged scaffold) | 5786-21-0 | Clozapine | Moligand™, ≥98% | A classic privileged scaffold example (fused 7-membered diaza ring); serves as a reference for multi-receptor activity profiles and scaffold-family comparisons (e.g., diazepine vs thia/oxa-zepines). | |
Approved drug | Antipsychotic | Dibenzoxazepine (fused 7-membered ring) | 1977-10-2 | Loxapine | Moligand™, ≥98% | Dibenzoxazepine fused scaffold; can be benchmarked alongside dibenzo-diazepine/thiazepine analogs for “scaffold family → receptor profile/CNS exposure” comparisons. | |
Approved drug | Anxiolytic/antidepressant-related | Tricyclic fused 7-membered N-containing scaffold | 315-72-0 | Opipramol | Moligand™, ≥98% | Representative tricyclic fused 7-membered N scaffold; often used as a CNS multi-target/σ-receptor–related reference compound. | |
Approved drug | Antidepressant (TCA) | Dibenzoazepine scaffold | 50-49-7 | Imipramine | Moligand™, ≥98% | TCA reference drug; dibenzoazepine fused 7-membered scaffold; used to compare monoamine transporter pharmacology/side effects and substituent impacts within the same core scaffold. | |
Approved drug | Antidepressant (TCA) | Dibenzoazepine scaffold | 303-49-1 | Clomipramine | Moligand™ | TCA lineage reference; within the same fused 7-membered scaffold, substituent changes can shift pharmacology and ADME—useful for same-scaffold parallel controls. | |
Approved drug | Antidepressant (TCA) | Dibenzoazepine scaffold | 50-47-5 | Desipramine | Moligand™ | TCA family reference; alongside other same-core TCAs, supports comparisons of side-chain/substituent effects on pharmacology and tolerability. | |
Approved drug | Antidepressant (TCA) | Dibenzoazepine scaffold | 739-71-9 | Trimipramine | Moligand™ | TCA family reference; same fused 7-membered core, useful as a parallel control for “same scaffold, different side chain/substitution.” | |
Approved drug | Antiepileptic | Dibenzoazepine scaffold | 298-46-4 | Carbamazepine | Moligand™, ≥98% | Classic antiepileptic; representative fused 7-membered N-heterocycle scaffold; often used for ion-channel pharmacology benchmarking and “same scaffold, different substitution/metabolism” optimization controls. | |
Approved drug | Antiepileptic | Carbamazepine lineage (core retained) | 28721-07-5 | Oxcarbazepine | Moligand™, ≥98% | Lineage reference to carbamazepine; retains the core scaffold, enabling comparisons of metabolic pathways, exposure, and tolerability within the same lineage. | |
Approved drug | Antiepileptic | Later-generation in carbamazepine lineage | 236395-14-5 | Eslicarbazepine acetate | ≥98% | Later-generation/prodrug-related reference in the lineage; used alongside carbamazepine and oxcarbazepine to compare how prodrug/metabolic strategies alter PK and tolerability. |
Table 2 | Approved Drugs (for Experimental Positive Controls)
(Other therapeutic areas: kidney/cardiovascular/ophthalmology/antibacterial/oncology/allergy/bone health/neurodegeneration)
Category | CAS No. | Aladdin Cat. No. | Name | Specification / Purity | Product features / selection notes (7-membered N-heterocycles) |
Approved drug | Kidney/metabolic | V2 receptor antagonist (benzodiazepine) | 150683-30-0 | Tolvaptan | Moligand™, ≥98% | V2 receptor antagonist positive control; contains a benzodiazepine (fused 7-membered N-heterocycle) scaffold; useful for assessing how fused 7-membered scaffolds affect oral exposure/distribution and pocket fit. | |
Approved drug | Cardiovascular | Benzazepinone-like fused scaffold | 148849-67-6 | Ivabradine hydrochloride | ≥98% | If channel inhibitor positive control; contains a fused 7-membered N scaffold; serves as a structural/mechanistic reference showing fused 7-membered scaffolds are also used in non-CNS targets. | |
Approved drug | Ophthalmology | ROCK inhibitor (contains a diazepane fragment) | 887375-67-9 | Ripasudil (K-115) hydrochloride dihydrate | ≥99% | ROCK inhibitor (ophthalmic) positive control; contains a protonatable diazepane fragment; suitable as a reference for salt form/solubility and local-delivery permeability-related property benchmarks. | |
Approved drug | Antibacterial (fluoroquinolone) | 7-membered N-ring side chain | 141388-76-3 | Besifloxacin | ≥99% | Fluoroquinolone antibacterial reference; its 7-membered N-ring side chain can serve as a structural reference for studying side-chain effects on permeability/efflux sensitivity and antibacterial activity. | |
Approved drug | Oncology | PARP inhibitor (mechanistic control) | 283173-50-2 | Rucaparib | Moligand™, ≥98% | PARP inhibitor positive control; contains a fused N-containing polycyclic system; useful for assay window definition and mechanism benchmarking in DNA repair pathway experiments. | |
Approved drug | Antihistamine | Fused 7-membered N-containing ring | 80012-43-7 | Epinastine | Moligand™ | H1 antihistamine positive control; contains a fused 7-membered N-heterocycle scaffold; suitable for peripheral H1 receptor/functional assay controls and structural reference. | |
Approved drug | SERM | 7-membered amine side chain (pKa/salt tuning) | 198481-33-3 | Bazedoxifene acetate | ≥98% (HPLC) | SERM reference drug; contains a protonatable 7-membered amine side chain; useful for evaluating how amine side chains influence salt form/solubility and receptor-binding conformational balance. | |
Approved drug | Alzheimer’s-related | Natural product with a 7-membered N-heterocycle | 357-70-0 | Galantamine | Moligand™, ≥98% | Natural-product drug reference (commonly used in AD mechanism studies); contains a 3D 7-membered N framework—useful as a structural reference for “shape contribution” in natural-product-like 7-membered N heterocycles. |
Table 3 | Synthetic Building Blocks / Scaffolds / Intermediates / Protecting Groups / Standards
(For constructing or modifying 7-membered N-heterocycles)
Category | CAS No. | Aladdin Cat. No. | Name | Specification / Purity | Product features / selection notes (7-membered N-heterocycles) |
Building block | 7-membered lactam core | 105-60-2 | ε-Caprolactam | Chemically pure (CP) | A classic 7-membered lactam core; can be ring-opened/reduced/functionalized to access azepanes, azepanones, amine side chains, etc.; a common precursor for building 7-membered N rings and tuning properties via “lactam → amine/amide” transformations. | |
Building block | Saturated 7-membered amine core (azepane) | 111-49-9 | H157403 | Hexamethyleneimine (HMI) | ≥98% (GC) | Azepane core building block; introduces a protonatable 7-membered amine center to tune pKa/solubility/permeability; convenient for parallel N-substitution library expansion. |
Building block | 7-membered diamine core (homopiperazine / 1,4-diazepane) | 505-66-8 | Homopiperazine | ≥98% | 1,4-Diazepane core; diaza 7-membered amines are often used to tune pKa/polarity and provide attachment handles (linkers/side chains), supporting “soft and tunable” series optimization. | |
Protected building block | Boc-protected homopiperazine (diaza 7-membered handle) | 112275-50-0 | 1-Boc-hexahydro-1,4-diazepine | ≥96% | Boc-protected 1,4-diazepane block; enables rapid installation of a diaza 7-membered amine followed by deprotection for salt formation or coupling—commonly used upstream in “soft 7-membered ring for pKa/solubility tuning” workflows. | |
Functionalized building block | Boc protection + amino handle (parallel-synthesis friendly) | 609789-17-5 | tert-Butyl 3-aminoazepane-1-carboxylate | ≥97% | A Boc-protected 7-membered amine with an additional amino site; facilitates linker attachment, dual-site modification, and parallel synthesis—suited for building “azepane side-chain libraries/fragments.” | |
Building block | 7-membered diaza lactam (more polar H-bond map) | 99822-50-1 | 1,4-Diazepan-2-one | ≥97% | Diaza 7-membered lactam; generally more polar than diamines and offers a more controllable HBA/HBD pattern; useful for scaffold hopping and tuning solubility/metabolic stability. | |
Building block | Fused benzazepine scaffold (benzazepine) | 4424-20-8 | 2,3,4,5-Tetrahydro-1H-benzo[d]azepine | ≥97% | A typical fused benzazepine 7-membered scaffold; introduces conformational bias/rigidification and is often explored in receptor/GPCR-oriented scaffold searches and hydrophobic–polarity balance optimization. | |
Block/control | Dibenzoazepine scaffold reference (dibenzoazepine) | 256-96-2 | Iminostilbene | Standard for GC, ≥99.5% (GC) | A dibenzoazepine (fused 7-membered N ring) scaffold reference/analytical standard; useful as a structural benchmark for tricyclic/fused 7-membered N-heterocycle series and as a standard in synthesis-intermediate workflows. | |
Block/intermediate | Hydrogenation precursor for dibenzoazepines (synthetic linkage) | 494-19-9 | Iminodibenzyl | ≥97% | A hydrogenation precursor/intermediate direction related to dibenzoazepines; useful for synthetic linkage toward fused 7-membered N-heterocycle series and structural controls (paired with “iminostilbene” as a matched reference). |
Note: “Approved/marketed” means approved and marketed in at least one country or region; indications and current regulatory/market status can differ by market. For research selection, prioritize the intended control use and supporting literature/label information.
Note: The above are representative Aladdin products. For additional specifications, refer to the product list at the end of the article, or search the Aladdin website by product name/CAS.
Aladdin: https://www.aladdinsci.com/
