IMPPAT Phytochemical information: 
9H-Pyrido[3,4-B]indole
9H-Pyrido[3,4-B]indole
Summary

SMILES: c1ccc2c(c1)[nH]c1c2ccnc1
InChI: InChI=1S/C11H8N2/c1-2-4-10-8(3-1)9-5-6-12-7-11(9)13-10/h1-7,13H
InChIKey: AIFRHYZBTHREPW-UHFFFAOYSA-N
DeepSMILES: cccccc6)[nH]cc5ccnc6
Scaffold Graph/Node/Bond level: c1ccc2c(c1)[nH]c1cnccc12
Scaffold Graph/Node level: C1CCC2C(C1)NC1CNCCC12
Scaffold Graph level: C1CCC2C(C1)CC1CCCCC12
Functional groups: c[nH]c; cnc
Chemical classification
ClassyFire Kingdom: Organic compounds
ClassyFire Superclass: Organoheterocyclic compounds
ClassyFire Class: Indoles and derivatives
ClassyFire Subclass: Pyridoindoles
NP Classifier Biosynthetic pathway: Alkaloids
NP Classifier Superclass: Tryptophan alkaloids
NP Classifier Class: Carboline alkaloids
Synonymous chemical names:
9h-pyrido[3,4-b]indole, beta-carboline, harman, nor, norharman, norharmane, β-carboline
External chemical identifiers:
CID:64961; ChEMBL:CHEMBL275224; ChEBI:109895; ZINC:ZINC000000066039; FDASRS:94HMA1I78O; SureChEMBL:SCHEMBL25834; MolPort-000-141-389
Chemical structure download
2D:2D MOL2D MOL22D SDF
3D:3D MOL3D MOL23D SDF3D PDB3D PDBQT
9H-Pyrido[3,4-B]indole
Physicochemical properties
Property name Tool Property value
Molecular weight (g/mol) RDKit 168.2
Log P RDKit 2.72
Topological polar surface area (Å2) RDKit 28.68
Number of hydrogen bond acceptors RDKit 1
Number of hydrogen bond donors RDKit 1
Number of carbon atoms RDKit 11
Number of heavy atoms RDKit 13
Number of heteroatoms RDKit 2
Number of nitrogen atoms RDKit 2
Number of sulfur atoms RDKit 0
Number of chiral carbon atoms RDKit 0
Stereochemical complexity RDKit 0
Number of sp hybridized carbon atoms RDKit 0
Number of sp2 hybridized carbon atoms RDKit 11
Number of sp3 hybridized carbon atoms RDKit 0
Shape complexity RDKit 0
Number of rotatable bonds RDKit 0
Number of aliphatic carbocycles RDKit 0
Number of aliphatic heterocycles RDKit 0
Number of aliphatic rings RDKit 0
Number of aromatic carbocycles RDKit 1
Number of aromatic heterocycles RDKit 2
Number of aromatic rings RDKit 3
Total number of rings RDKit 3
Number of saturated carbocycles RDKit 0
Number of saturated heterocycles RDKit 0
Number of saturated rings RDKit 0
Number of Smallest Set of Smallest Rings (SSSR) RDKit 3
9H-Pyrido[3,4-B]indole
Drug-likeness properties
Property nameToolProperty value
Number of Lipinski’s rule of 5 violations RDKit 0
Lipinski’s rule of 5 filter RDKit Passed
Number of Ghose filter violations RDKit 0
Ghose filter RDKit Passed
Veber filter RDKit Good
Pfizer 3/75 filter RDKit Bad
GSK 4/400 filter RDKit Good
Weighted quantitative estimate of drug-likeness (QEDw) score RDKit 0.5489
9H-Pyrido[3,4-B]indole
ADMET properties
Property nameToolProperty value
Bioavailability score SwissADME 0.55
Solubility class [ESOL] SwissADME Soluble
Solubility class [Silicos-IT] SwissADME Moderately soluble
Blood Brain Barrier permeation SwissADME Yes
Gastrointestinal absorption SwissADME High
Log Kp (Skin permeation, cm/s) SwissADME -5.08
Number of PAINS structural alerts SwissADME 0.0
Number of Brenk structural alerts SwissADME 0.0
CYP1A2 inhibitor SwissADME Yes
CYP2C19 inhibitor SwissADME No
CYP2C9 inhibitor SwissADME No
CYP2D6 inhibitor SwissADME No
CYP3A4 inhibitor SwissADME Yes
P-glycoprotein substrate SwissADME Yes
9H-Pyrido[3,4-B]indole
Predicted human target proteins
Protein identifierHGNC symbolCombined score from STITCH database
ENSP00000367309MAOB785
ENSP00000440698DBI758
The human target proteins were predicted using STITCH, a database of Chemical-Protein interaction networks.