GRADE & PURITYMoligand™?Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools.
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Application Protocols
No tested applications are provided in the product data. The following outlines generic, non-item-specific procedures suitable for small-molecule screening compounds.
General HTS-compatible workflow (example)
Stock preparation: Dissolve in dry DMSO at 10 mM. Vortex/sonicate until clear. Filter (0.2 µm PTFE) if particulate persists.
Plate formatting: Dispense 100–1000 nL into assay plates via acoustic or pin-tool transfer. Seal and store desiccated until use.
Assay setup: Add assay mix to reach final DMSO 0.1–1% v/v. Include positive control, vehicle control, and a counter-assay to flag interference.
Readout: Follow assay-specific timing and detection (fluorescence, luminescence, absorbance, SPR/MST for binding).
Data QC: Inspect Z′ factor, signal window, and check for edge effects. Confirm hits with dose–response (8–12 points) and replicate runs.
Notes
If the compound has limited solubility, consider cosolvent blends (DMSO:MeCN or DMSO:EtOH) or gentle warming. Avoid precipitation in wells.
For cell assays, confirm vehicle tolerance and perform cytotoxicity controls (e.g., CellTiter-Glo) alongside the primary readout.
Biological Roles
No target assignment or biological role is provided for this Moligand™ item in the product data.
General context for small-molecule screening ligands (not item-specific)
Serve as chemical probes or starting points to interrogate protein function and pathways in vitro or in cells.
Enable structure–activity relationship (SAR) development when combined with analogs, guiding potency, selectivity, and ADME optimization.
Used in biophysical binding measurements (SPR, ITC, MST, DSF) to quantify thermodynamics/kinetics where a biochemical activity assay is unavailable.
Good practices
Validate hit behavior with orthogonal assays to exclude assay artifacts (redox cycling, fluorescence interference, aggregation).
If the structure is later known, assess substructure alerts/PAINS and potential reactive moieties before assigning mechanism.
For cellular work, establish DMSO tolerance, permeability surrogates (PAMPA/CMC), and cytotoxicity baselines to frame interpretable biology.
Reminder
This product is for research use only. No medical, diagnostic, or therapeutic claims are made or implied.
Buffer Applications
This product is a small-molecule screening compound and is not itself a buffer component. However, practical buffer integration is central to assay use.
General guidance (not item-specific)
Stock preparation: Dissolve in DMSO (e.g., 10 mM). Vortex/sonicate. Warm gently if needed; avoid prolonged heating.
Aqueous dilution: Add stock slowly into well-mixed buffer to a final DMSO of 0.1–1% v/v. Common buffers: PBS (pH 7.4), HEPES (pH 7.2–7.6), Tris (pH 7.5–8.0) depending on assay.
Solubility aids: 0.01–0.05% nonionic surfactant (e.g., Tween-20) can reduce aggregation. Adjust pH to favor ionization if the compound is known to be acidic/basic.
Adsorption control: Include low levels of carrier protein (e.g., 0.1% BSA) if nonspecific binding to plastics is suspected; confirm that it does not interfere with the assay.
Precipitation checks: Inspect visually; use light scattering/turbidity scans (300–700 nm) on a plate reader to detect microprecipitates.
Item-specific buffer compatibility, pKa, and solubility data: Not specified for this item; refer to CoA/Spec Sheet.
Green Alternatives
Without structural information, greener choices focus on solvent and process decisions rather than substitution of the molecule itself.
Greener handling choices (general guidance)
Prefer bio-based or lower-toxicity solvents where compatible with solubility: ethanol, isopropanol, water (pH-adjusted). Use DMSO efficiently and keep final assay % as low as feasible.
Employ miniaturized screening (e.g., 384/1536-well formats) to reduce solvent consumption and waste.
Use microscale purification (SPE, mini-flash) if cleanup is needed, selecting greener eluents (EtOH/water) when chromatographically feasible.
Illustrative comparison (general; not item-specific)
DMSO vs Ethanol: DMSO offers broader solvency but higher persistence; ethanol is greener but may not dissolve highly lipophilic molecules.
Acetonitrile vs Methanol: MeCN provides low viscosity and UV transparency but has higher environmental burden; methanol is greener but more protic and may not suit all assays.
Waste and safety
Consolidate organic residues; use closed-well plate sealing to limit VOC emissions.
Consider aqueous-compatible assays and label-free readouts (e.g., MST, BLI) to minimize dye/interference requirements.
All selections should be validated experimentally for the specific compound once its properties are known.
Pharmaceutical Uses
No pharmacopeial status, excipient role, or formulation use is provided for this item. It is supplied for research use only.
General discovery context (not item-specific)
Hit identification and profiling: Employed in early screening to generate hypothesis-building data that may inform later medicinal chemistry campaigns.
Developability triage (in vitro): Solubility, permeability, and chemical stability screens can be performed to prioritize scaffolds for follow-up synthesis.
Analytical reference: Once identity and purity are confirmed, can serve as a reference material for LC-MS method development in discovery.
Compliance note
This product is not GMP and is not intended for clinical manufacturing or diagnostic use.
Any movement toward regulated use would require bespoke synthesis under GMP with full impurity profiling, validated analytical methods, and stability studies—outside the scope of this catalog item.
Physical Properties
Item-specific physicochemical constants are not provided in the product data.
Appearance: Not specified for this item; refer to CoA/Spec Sheet.
Melting/Freezing Point: Not specified for this item; refer to CoA/Spec Sheet.
Boiling Point: Not specified for this item; refer to CoA/Spec Sheet.
Density: Not specified for this item; refer to CoA/Spec Sheet.
Refractive Index: Not specified for this item; refer to CoA/Spec Sheet.
Solubility: Not specified for this item; refer to CoA/Spec Sheet.
logP/logD, pKa: Not specified for this item; refer to CoA/Spec Sheet.
General guidance (literature/practice, not item-specific)
For unknown small molecules used in screening, initial dissolution is commonly attempted in anhydrous DMSO (1–50 mM), with subsequent dilution into aqueous assay buffers (final DMSO 0.1–1% v/v).
If structure becomes available, estimate ionization with software (e.g., ACD/Percepta, ChemAxon) to anticipate pH-dependent solubility and choose co-solvents (MeCN, EtOH, DMF) accordingly.
If crystalline, a melting range can be measured by DSC; if liquid, report viscosity and refractive index to aid handling.
All definitive specifications must be taken from the item’s CoA/Spec Sheet when provided.
Quality and Grades
Grade/Purity: Moligand™ (as provided). Specific numeric purity and analytical limits are not included in the product data.
What Moligand™ typically implies (general description, not item-specific specs)
Designed for ligand discovery and screening workflows (biochemical, biophysical, cell-based). Emphasis is typically on identity confirmation and suitability for HTS-compatible dissolution rather than ultra-trace impurity control for GMP.
Likely supported by baseline QC identity (e.g., LC-MS/HRMS) and chromatographic purity appropriate for discovery assays. Exact methods/thresholds: Not specified for this item; refer to CoA/Spec Sheet.
Item-specific details
Purity % / residual solvents / water / metals / stabilizers / UV cutoff: Not specified for this item; refer to CoA/Spec Sheet.
Appearance and form (solid/oil/solution): Not specified for this item; refer to CoA/Spec Sheet.
Best practices
For structure–activity work or orthogonal assays, request and review the CoA/SDS for identity and purity data, and consider in-house confirmation (LC-UV/MS, NMR) if your application is impurity-sensitive.
If LC-based readouts are used, verify UV background and elution behavior to avoid assay interference.
Storage status (from product data)
Recommended storage: Room temperature. Protect from moisture, heat, and light unless otherwise stated on the CoA.
Reaction and Applications
This Moligand™ item is intended primarily as a small-molecule screening ligand rather than a synthetic reagent. No reaction-specific data are provided in the product record.
Research applications (general, not item-specific claims)
Cell-based phenotypic assays: Probe preliminary effects on pathways; verify cytotoxicity windows and DMSO tolerance.
Chemoproteomics/fragments: If suitable, use for target deconvolution with thermal shift or pull-down workflows.
Analytical reference: May serve as a reference standard for LC-MS retention time or method development once identity is confirmed.
Practical tips
Prepare fresh DMSO stocks, verify concentration by UV (if chromophore known) or by quantitative NMR against an internal standard.
Evaluate aggregation/assay interference using control assays (e.g., detergent sensitivity, redox/PAINS filters) to reduce false positives.
Cross-validate hits in orthogonal assays and titrate to derive potency estimates; confirm identity/purity of the material used for biological readouts.
Synthetic use
Not specified for this item; if synthetic transformations are intended, obtain the full structure to determine functional group compatibility and reactivity.
Reaction Conditions
No reaction conditions are specified for this item and, given the lack of structural information, prescriptive synthetic conditions are not applicable.
General lab handling conditions for screening compounds (not item-specific)
Stock solutions: 10–50 mM in anhydrous DMSO; verify concentration by UV or qNMR when feasible.
Assay usage: Typical working concentrations range from 0.1–50 µM in biochemical assays; perform serial dilutions to define response curves.
Stability checks: Monitor by LC-UV/MS after 24–72 h in assay buffer at the intended temperature to detect hydrolysis/oxidation.
Light/oxygen sensitivity: In absence of data, store and handle under ambient light-minimized conditions; cap tightly to limit atmospheric moisture/oxygen ingress.
If the compound is later used in synthesis, establish conditions empirically based on the revealed functional groups (solvent, temperature, catalyst, time), and consult primary literature for the specific scaffold.
Safety and Handling
Safety details are limited in the product data; handle as a research chemical of unknown hazards and consult the SDS.
GHS Classification (per product data): Not specified for this item; refer to SDS.
Signal Word / Pictograms / H-statements: Not specified for this item; refer to SDS.
Primary use: For research use only (not for human or veterinary use).
Good laboratory practice (general guidance)
PPE: Lab coat, safety glasses, and appropriate chemically resistant gloves (e.g., nitrile). Use in a fume hood to avoid inhalation of vapors/aerosols.
Hygiene: Avoid ingestion and skin/eye contact. Wash hands after handling. Do not pipette by mouth.
Incompatibilities: Unknown for this item; segregate from strong oxidizers/reductants and acids/bases until specific data are available.
Spill response: Absorb small spills with inert material (vermiculite), collect for disposal. Ventilate area. For solutions, control ignition sources.
First aid (overview): If inhaled—move to fresh air. Skin/eye contact—rinse with water for 15 minutes; remove contaminated clothing. If ingested—rinse mouth, do not induce vomiting; seek medical attention. Always follow the SDS.
Waste disposal: Dispose as organic laboratory waste in accordance with institutional and regional regulations.
Note: When structural information is unavailable, adopt a conservative approach consistent with handling of potentially hazardous organic compounds.
Solvent Selection
With no structure disclosed in the product data, solvent choice should follow a tiered screening strategy suitable for diverse small molecules.
Primary stock solvent (general practice):DMSO (anhydrous) for 10–50 mM stocks due to broad solvency and assay compatibility.
Secondary options: DMF, NMP, acetonitrile, ethanol/isopropanol for compounds with differing polarity/hydrogen-bonding profiles. Water with pH adjustment may work for ionizable molecules.
Aqueous dilution: Introduce stock slowly into buffer (vortex/sonicate) to minimize precipitation. Maintain final DMSO 0.1–1% v/v for most biochemical assays.
Buffers commonly used (general): PBS, HEPES, Tris, assay-specific media; add nonionic surfactant (e.g., 0.01–0.05% Tween-20) if colloidal aggregation is suspected.
Comparison (general guidance)
DMSO: maximum solvency; may affect membrane integrity at >1–2% v/v.
DMF/NMP: similar solvency; check cytotoxicity and extractables; higher boiling points complicate removal.
MeCN: volatile, miscible, good for LC prep; limited for very nonpolar analytes.
Ethanol/IPA: greener, but lower solvency for highly lipophilic compounds.
Notes
If the compound is basic/acidic (once known), adjust pH to favor ionization for aqueous solubility or counter-ion pairing for crystallization.
Always confirm absence of precipitation visually or by UV/plate reader turbidity scans prior to screening.
Shipped In: Not specified for this item; refer to CoA/Spec Sheet.
Appearance/Form: Not specified for this item; refer to CoA/Spec Sheet.
Reconstitution and handling (general guidance, not item-specific)
If supplied as a solid: Equilibrate to room temperature in a desiccator before opening. Prepare a 10–50 mM DMSO stock, aliquot into low-bind tubes, and seal tightly.
If supplied as a solution: Verify concentration on the CoA; store according to label. Minimize freeze–thaw cycles by aliquoting.
Aqueous work: Dilute DMSO stock slowly into buffer with mixing to a final DMSO of 0.1–1% v/v; inspect for precipitation.
Light/moisture: In absence of item data, protect from light and humidity; include desiccant with containers.
Stability
Item-specific shelf life and stability-indicating assay results: Not specified for this item; refer to CoA/Spec Sheet.
For extended storage of DMSO stocks, many labs keep aliquots at −20 °C in the dark (general practice). Verify stability by periodic LC-MS.
Always defer to the product label and CoA/SDS for authoritative storage and handling instructions.
Structure and Identity
A Moligand-grade small molecule supplied for screening and discovery workflows. Item-specific structural identifiers are limited in the product data.
SKU: L611592
Product Name: LSN3318839
Catalog Category: 小分子和化合物库 (Small-molecule and compound library)
CAS: L611592 (catalog placeholder; not a standard CAS Registry Number)
PubChem CID: 162641136
InChIKey (as provided): 166566
SMILES: Not specified for this item; refer to CoA/Spec Sheet.
Molecular Formula: Not specified for this item; refer to CoA/Spec Sheet.
Molecular Weight: Not specified for this item; refer to CoA/Spec Sheet.
Structural features
Item-specific functional groups, ring systems, stereochemistry: Not specified for this item; refer to CoA/Spec Sheet.
2D/3D depiction: Not provided in product data. Where structural data are available (CoA/Spec), describe heteroatoms, aromatic/heteroaromatic content, HBA/HBD counts, and stereocenters to guide solubility and binding predictions.
Notes
This listing is positioned as a screening ligand (Moligand™); detailed identifiers may be provided on accompanying documentation (CoA/SDS).
Synthetic Utility
Specific synthetic roles for this item cannot be assigned without structural information.
Functional groups/reactivity: Not specified for this item; refer to CoA/Spec Sheet.
Named reactions or transformations: Not applicable without knowing the scaffold and substituent pattern.
General considerations (not item-specific)
Library compounds are typically supplied for screening, not as synthetic building blocks. If repurposed synthetically, ensure full structural disclosure, confirm functional group tolerance, and check for residual protecting groups or counter-ions that may affect reactivity.
For route scouting or analogue synthesis, use the provided CID/structure (when available) to design retrosynthetic disconnections, identify commercially available precursors, and evaluate chemoselectivity risks.
If synthetic application is intended, request extended documentation (full structure, spectral data, impurity profile) and consider re-purification to meet your reaction’s requirements.
Target Specificity
No target, pathway, or selectivity profile is provided in the product data for LSN3318839.
Assigned target(s): Not specified for this item; refer to CoA/Spec Sheet or screening results.
Mechanism of action: Not specified for this item.
Selectivity/counterscreens: Not specified for this item.
Note: For screening hits, determine preliminary specificity by orthogonal assays and a small panel of related targets, then expand to broader selectivity profiling as warranted.
Need help choosing the grade?
Our grade selection guide covers purity, stabilizer status, and application suitability for all variants in our catalog.
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