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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 178917316Generated: October 23, 2026

Imidazo(4,5-b)pyridine

3H-IMIDAZO[4,5-B]PYRIDIN · 3H-Imidazo[4,5-b]pyridine · 3H-Imidazo[4,5-b]pyridine(9CI)

https://huagongshe.com/en/chemical/178917316

Imidazo(4,5-b)pyridine molecular structure

Identifiers & Physical Properties

CAS No.170245-18-8
Molecular formulaC6H5N3
Average molar mass119.12 g/mol
SMILESc1cnc2[nH]cnc2c1
InChIKeyGAMYYCRTACQSBR-UHFFFAOYSA-N
ChEMBLCHEMBL4476663
ChEBICHEBI:59952
EC No.205-987-3

Chemical & Physical Properties

XLogP0.3
Topological polar surface area41.6
Hydrogen bond donors1
Hydrogen bond acceptors2
Rotatable bonds0
Heavy atoms9
Formal charge0
Complexity104
LogP (partition coefficient)0.3
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH302-H315-H319-H335
GHS precautionary statementsP261-P305+P351+P338

Safety & Regulations

GHS classificationWarningH302 (98.6%): Harmful if swallowed [Warning Acute toxicity, oral]P264, P270, P301+P317, P330, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 69 reports by companies from 3 notifications to the ECHA C&L Inventory.
Regulatory information1H-Imidazo4,5-bpyridine: Does not have an individual approval but may be used under an appropriate group standard
Hazard Classes and CategoriesAcute Tox. 4 (98.6%)
Signal wordWarning
GHS pictogramGHS07
GHS hazard statementsH302-H315-H319-H335
GHS precautionary statementsP261-P305+P351+P338