IMPPAT Phytochemical information: 
2,3,5,6-Tetramethylpyrazine

2,3,5,6-Tetramethylpyrazine
Summary

SMILES: Cc1nc(C)c(nc1C)C
InChI: InChI=1S/C8H12N2/c1-5-6(2)10-8(4)7(3)9-5/h1-4H3
InChIKey: FINHMKGKINIASC-UHFFFAOYSA-N
DeepSMILES: CcncC)cnc6C)))C
Scaffold Graph/Node/Bond level: c1cnccn1
Scaffold Graph/Node level: C1CNCCN1
Scaffold Graph level: C1CCCCC1
Functional groups: cnc
Chemical classification
ClassyFire Kingdom: Organic compounds
ClassyFire Superclass: Organoheterocyclic compounds
ClassyFire Class: Diazines
ClassyFire Subclass: Pyrazines
NP Classifier Biosynthetic pathway: Alkaloids|Amino acids and Peptides
NP Classifier Superclass: Tetramate alkaloids|Peptide alkaloids
NP Classifier Class: Pyrazine and Piperazine alkaloids
Synonymous chemical names:
tetramethylpyrazine, Tetramethylpyrazine, ligustrazine
External chemical identifiers:
CID:CID_14296; ChEMBL:CHEMBL303697; ChEBI:CHEBI:133246; ZINC:ZINC000000004042; FDASRS:V80F4IA5XG; SureChEMBL:SCHEMBL77624; MolPort-002-473-658
Chemical structure download


2,3,5,6-Tetramethylpyrazine
Physicochemical properties
Property name Tool Property value
Molecular weight (g/mol) RDKit 136.2
Log P RDKit 1.71
Topological polar surface area (Å2) RDKit 25.78
Number of hydrogen bond acceptors RDKit 2
Number of hydrogen bond donors RDKit 0
Number of carbon atoms RDKit 8
Number of heavy atoms RDKit 10
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 4
Number of sp3 hybridized carbon atoms RDKit 4
Shape complexity RDKit 0.5
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 0
Number of aromatic heterocycles RDKit 1
Number of aromatic rings RDKit 1
Total number of rings RDKit 1
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 1


2,3,5,6-Tetramethylpyrazine
Drug-likeness properties
Property nameToolProperty value
Number of Lipinski’s rule of 5 violations RDKit 0
Lipinski’s rule of 5 RDKit Passed
Number of Ghose rule violations RDKit 1
Ghose rule RDKit Failed
Veber rule RDKit Good
Egan rule RDKit Good
GSK 4/400 rule RDKit Good
Pfizer 3/75 rule RDKit Bad
Weighted quantitative estimate of drug-likeness (QEDw) score RDKit 0.54


2,3,5,6-Tetramethylpyrazine
ADME properties
Property nameToolProperty value
Bioavailability score SwissADME 0.55
Solubility class [ESOL] SwissADME Very soluble
Solubility class [Silicos-IT] SwissADME Soluble
Blood Brain Barrier permeation SwissADME Yes
Gastrointestinal absorption SwissADME High
Log Kp (Skin permeation, cm/s) SwissADME -6.22
Number of PAINS structural alerts SwissADME 0
Number of Brenk structural alerts SwissADME 0
CYP1A2 inhibitor SwissADME No
CYP2C19 inhibitor SwissADME No
CYP2C9 inhibitor SwissADME No
CYP2D6 inhibitor SwissADME No
CYP3A4 inhibitor SwissADME No
P-glycoprotein substrate SwissADME No


2,3,5,6-Tetramethylpyrazine
Human target proteins
Protein identifierHGNC symbolCombined score from STITCH database
ENSP00000003084CFTR700
ENSP00000338018HIF1A800
ENSP00000306512IL8800
The human target proteins were predicted using STITCH, a database of Chemical-Protein interaction networks.