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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 12688461Generated: October 23, 2026

4-Ethynyl-1-methyl-1H-pyrazole-5-carboxylic acid

4-Ethynyl-2-methyl-2H-pyrazole-3-carboxylic acid · 1H-Pyrazole-5-carboxylic acid, 4-ethynyl-1-methyl- · 4-ETHYNYL-1-METHYL-1(H)-PYRAZOLE-5-CARBOXYLIC ACID · 1H-Pyrazole-5-carboxylic acid, 4-ethynyl-1-methyl- (9CI)

https://huagongshe.com/en/chemical/12688461

4-Ethynyl-1-methyl-1H-pyrazole-5-carboxylic acid molecular structure

Identifiers & Physical Properties

CAS No.79229-66-6
Molecular formulaC7H6N2O2
Average molar mass150.13 g/mol
Monoisotopic mass150.04292743 g/mol
SMILESC#Cc1cnn(C)c1C(=O)O
InChIKeyDCKSYSASJNLBEQ-UHFFFAOYSA-N
PubChem CID12688461
DTXSIDDTXSID80506934

Chemical & Physical Properties

XLogP0.3
Topological polar surface area55.1
Hydrogen bond donors1
Hydrogen bond acceptors3
Rotatable bonds2
Heavy atoms11
Formal charge0
Complexity218
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH302-H315-H319-H335
GHS precautionary statementsP280-P305+P351+P338

Safety & Regulations

Signal wordWarning
GHS pictogramGHS07
GHS hazard statementsH302-H315-H319-H335
GHS precautionary statementsP280-P305+P351+P338