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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 671237Generated: October 31, 2026

5-Ethyl 1-methyl-1H-pyrazole-3,5-dicarboxylate

1H-Pyrazole-3,5-dicarboxylic acid, 1-methyl-, 5-ethyl ester · 1H-Pyrazole-3,5-dicarboxylicacid,1-methyl-,5-ethylester(9CI)

https://huagongshe.com/en/chemical/671237

5-Ethyl 1-methyl-1H-pyrazole-3,5-dicarboxylate molecular structure

Identifiers & Physical Properties

CAS No.512809-16-4
Molecular formulaC8H10N2O4
Average molar mass198.18 g/mol
Monoisotopic mass198.0640568 g/mol
SMILESCCOC(=O)c1cc(C(=O)O)nn1C
InChIKeyJLSQQJCFVRBJAS-UHFFFAOYSA-N
PubChem CID671237
EC No.859-703-3
DTXSIDDTXSID601250234

Chemical & Physical Properties

XLogP0.6
Topological polar surface area81.4
Hydrogen bond donors1
Hydrogen bond acceptors5
Rotatable bonds4
Heavy atoms14
Formal charge0
Complexity243
Boiling point390.1±27.0 °C(Predicted)
Density1.36±0.1 g/cm3(Predicted)
pKa (acidity coefficient)3.68±0.10(Predicted)
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH315-H319
GHS precautionary statementsP264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313

Safety & Regulations

GHS classificationWarningH315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory.
Hazard Classes and CategoriesSkin Irrit. 2 (100%)
Signal wordWarning
GHS pictogramGHS07
GHS hazard statementsH315-H319
GHS precautionary statementsP264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313