d-Bicuculline - Moligand™, analytical standard , Antagonist of GABA A receptor α1 subunit;Antagonist of GABA A receptor α2 subunit;Antagonist of GABA A receptor α3 subunit;Antagonist of GABA A receptor α4 subunit;Antagonist of GABA A receptor α5 subunit;A, Antagonist of GABA A receptor α1 subunit;Antagonist of GABA A receptor α2 subunit;Antagonist of GABA A receptor α3 subunit;Antagonist of GABA A receptor α4 subunit;Antagonist of GABA A receptor α5 subunit;Antagonist of GABA A receptor α6 subunit;Channel b

CAS: 485-49-4 Cat. No.: B110235 Molecular Weight: 367.35 Beilstein Registry Number: 98786 EC Number: 207-619-7

GRADE & PURITY Analytical standard, Moligand™

Synonyms

(+)-Bicuculline- Bio-X | KBio1_000609 | HB0896 | HMS501O11 | SR-01000075252 | BCP04180 | HY-N0219 | Lopac0_000234 | MLS002153892 | (6R)-6-((5S)-6-methyl(5,6,7,8-tetrahydro-2H-1,3-dioxolano[4,5-g]isoquinolin-5- yl))-6-hydro-2H-1,3-dioxoleno[4,5-e]isobenzof

Storage

Store at 2-8°C

Shipped In

Wet ice

Specifications

Synonyms

(+)-Bicuculline- Bio-X | KBio1_000609 | HB0896 | HMS501O11 | SR-01000075252 | BCP04180 | HY-N0219 | Lopac0_000234 | MLS002153892 | (6R)-6-((5S)-6-methyl(5, 6, 7, 8-tetrahydro-2H-1, 3-dioxolano[4, 5-g]isoquinolin-5- yl))-6-hydro-2H-1, 3-dioxoleno[4, 5-e]isobenzof

Specifications & Purity

Moligand™, analytical standard

Storage

Store at 2-8°C

Shipped In

Wet ice

This product requires cold chain shipping. Ground and other economy services are not available.

Grade

Analytical standard, Moligand™

Action Type

ANTAGONIST, CHANNEL BLOCKER

Mechanism of action

Antagonist of GABA A receptor α1 subunit;Antagonist of GABA A receptor α2 subunit;Antagonist of GABA A receptor α3 subunit;Antagonist of GABA A receptor α4 subunit;Antagonist of GABA A receptor α5 subunit;Antagonist of GABA A receptor α6 subunit;Channel b

Names and Identifiers

• Canonical Smiles: CN1CCC2=CC3=C(C=C2C1C4C5=C(C6=C(C=C5)OCO6)C(=O)O4)OCO3
• IUPAC Name: (6R)-6-[(5S)-6-methyl-7,8-dihydro-5H-[1,3]dioxolo[4,5-g]isoquinolin-5-yl]-6H-furo[3,4-g][1,3]benzodioxol-8-one
• InChIKey: IYGYMKDQCDOMRE-ZWKOTPCHSA-N
• INCHI: 1S/C20H17NO6/c1-21-5-4-10-6-14-15(25-8-24-14)7-12(10)17(21)18-11-2-3-13-19(26-9-23-13)16(11)20(22)27-18/h2-3,6-7,17-18H,4-5,8-9H2,1H3/t17-,18+/m0/s1
• Isomeric SMILES: CN1CCC2=CC3=C(C=C2[C@H]1[C@H]4C5=C(C6=C(C=C5)OCO6)C(=O)O4)OCO3
• WGK Germany: 3
• RTECS: LV0909840
• UN Number: 1544
• Molecular Weight: 367.35
• Beilstein: 98786
• Reaxy-Rn: 98784
• Reaxys-RN_link_address: https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=98784&ln=

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Alkaloids and derivatives
    • Class Phthalide isoquinolines

• Kingdom: Organic compounds
• Superclass: Alkaloids and derivatives
• Class: Phthalide isoquinolines
• Subclass: Not available
• Intermediate Tree Nodes: Not available
• Direct Parent: Phthalide isoquinolines
• Alternative Parents: Tetrahydroisoquinolines Phthalides Benzofuranones Benzodioxoles Aralkylamines Benzenoids Trialkylamines Amino acids and derivatives Lactones Carboxylic acid esters Oxacyclic compounds Acetals Monocarboxylic acids and derivatives Azacyclic compounds Hydrocarbon derivatives Organic oxides Organopnictogen compounds
• Molecular Framework: Aromatic heteropolycyclic compounds
• Substituents: Phthalide isoquinoline - Benzofuranone - Phthalide - Isobenzofuranone - Tetrahydroisoquinoline - Benzodioxole - Isocoumaran - Aralkylamine - Benzenoid - Amino acid or derivatives - Carboxylic acid ester - Lactone - Tertiary amine - Tertiary aliphatic amine - Monocarboxylic acid or derivatives - Acetal - Carboxylic acid derivative - Oxacycle - Organoheterocyclic compound - Azacycle - Organic oxide - Organopnictogen compound - Organooxygen compound - Organonitrogen compound - Amine - Organic oxygen compound - Hydrocarbon derivative - Organic nitrogen compound - Aromatic heteropolycyclic compound
• Description: This compound belongs to the class of organic compounds known as phthalide isoquinolines. These are organic compounds with a structure characterized by an isoquinoline moiety linked to phthalide.
• External Descriptors: Isoquinoline alkaloids

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Associated Targets(Human)

CYP2C19 Tchem Cytochrome P450 2C19 (0 Activities)

Discover Target: CYP2C19

Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

CYP3A4 Tclin Cytochrome P450 3A4 (0 Activities)

Discover Target: CYP3A4

Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

GABRA1 Tclin Gamma-aminobutyric acid receptor subunit alpha-1 (0 Activities)

Discover Target: GABRA1

Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

GABRA3 Tclin Gamma-aminobutyric acid receptor subunit alpha-3 (0 Activities)

Discover Target: GABRA3

Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

GABRA4 Tclin Gamma-aminobutyric acid receptor subunit alpha-4 (0 Activities)

Discover Target: GABRA4

Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

GABRA5 Tclin Gamma-aminobutyric acid receptor subunit alpha-5 (0 Activities)

Discover Target: GABRA5

Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

GABRA2 Tclin Gamma-aminobutyric acid receptor subunit alpha-2 (0 Activities)

Discover Target: GABRA2

Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

GABRA6 Tclin Gamma-aminobutyric acid receptor subunit alpha-6 (0 Activities)

Discover Target: GABRA6

Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

KCNN1 Tchem Small conductance calcium-activated potassium channel protein 1 (1 Activities)

Discover Target: KCNN1

Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

KCNN2 Tchem Small conductance calcium-activated potassium channel protein 2 (1 Activities)

Discover Target: KCNN2

Activity Type	Activity Value -log(M)	Mechanism of Action	Activity Reference	Publications (PubMed IDs)

GABRA1 Tclin GABA receptor alpha-1 subunit (399 Activities)

Discover Target: GABRA1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ACHE Tclin Acetylcholinesterase (18204 Activities)

Discover Target: ACHE

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

EHMT2 Tchem Histone-lysine N-methyltransferase, H3 lysine-9 specific 3 (93046 Activities)

Discover Target: EHMT2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

GMNN Tbio Geminin (128009 Activities)

Discover Target: GMNN

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CBX1 Tbio Chromobox protein homolog 1 (92434 Activities)

Discover Target: CBX1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

KPNB1 Tbio Importin subunit beta-1/Snurportin-1 (25097 Activities)

Discover Target: KPNB1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Associated Targets(non-human)

Hdac6 Histone deacetylase 6 (222 Activities)

Discover Target: Hdac6

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Gabrg1 GABA receptor gamma-1 subunit (26 Activities)

Discover Target: Gabrg1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Pseudomonas aeruginosa (123386 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Klebsiella pneumoniae (43867 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Staphylococcus aureus (210822 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Acinetobacter baumannii (41033 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Escherichia coli (133304 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Cryptococcus neoformans (21258 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Candida albicans (78123 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mus musculus (284745 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

rep Replicase polyprotein 1ab (378 Activities)

Discover Target: rep

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Txnrd1 Thioredoxin reductase 1, cytoplasmic (45279 Activities)

Discover Target: Txnrd1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

BCHE Cholinesterase (8742 Activities)

Discover Target: BCHE

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Gabrp GABA-A receptor; anion channel (5731 Activities)

Discover Target: Gabrp

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Gabrg2 GABA-A receptor; alpha-1/beta-2/gamma-2 (554 Activities)

Discover Target: Gabrg2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Scn2a Sodium channel alpha subunits; brain (Types I, II, III) (344 Activities)

Discover Target: Scn2a

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mechanisms of Action

Chemical and Physical Properties

• Specific Rotation[α]: +127.0 to +132.0 deg(C=1, CHCl3)
• Melt Point(°C): 195-199°C
• Molecular Weight: 367.400 g/mol
• XLogP3: 2.600
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 7
• Rotatable Bond Count: 1
• Exact Mass: 367.106 Da
• Monoisotopic Mass: 367.106 Da
• Topological Polar Surface Area: 66.500 Ų
• Heavy Atom Count: 27
• Formal Charge: 0
• Complexity: 615.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 2
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 1

References

1. Xu Yi, Zhang Shuai, Sun Qiang, Wang Xu-Qiao, Chai Ya-Ni, Mishra Chandan, Chandra Shah Ram, Ai Jing.  (2020)  Cholinergic Dysfunction Involvement in Chronic Cerebral Hypoperfusion-Induced Impairment of Medial Septum–dCA1 Neurocircuit in Rats.  Frontiers in Cellular Neuroscience,      [PMID:33132852] [10.3389/fncel.2020.586591]

2. Wei Xu, Yanlan Zhu, Xiaolin Zhou, Haoyue Guo, Jingxin Wang, Ruiqi Zhu, Zhengwei Hu, Wei Ma, Xing Ma, Xiaojian Li, Xiaomin Xu.  (2025)  High-density, Ultraflexible Organic Electrochemical Transistor Array for Brain Activity Mapping.  Journal of Materials Chemistry C,      [PMID:] [10.1039/D4TC02839B]

3. Yan Zhang, Zihao Cheng, Jie Dai, Chunlei Zhang, Xueqian Cheng, Ying Peng, Weiwei Li, Jiang Zheng.  (2026)  Mechanism-based inactivation of CYP2C19 by bicuculline and related alteration in pharmacokinetics of clopidogrel.  DRUG METABOLISM AND DISPOSITION,      [PMID:41689871] [10.1016/j.dmd.2026.100238]