HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 4913402Generated: October 31, 2026
3-Ethyl-1H-pyrazole-5-carboxylic acid
AKOS PAO-0830 · 5-ethyl pyrazole-3-carboxylic acid · 3-Ethyl-pyrazole-5-carboxylic acid · 3-ETHYL-1H-PYRAZOLE-5-CARBOXYLIC ACID · 1H-Pyrazole-3-carboxylicacid, 5-ethyl- · 3-ethyl-1H-pyrazole-5-carboxylic acid(SALTDATA: FREE) · 5-Ethyl-1h-pyrazole-3-carboxylic acid 3-ETHYL-1H-PYRAZOLE-5-CARBOXYLIC ACID
https://huagongshe.com/en/chemical/4913402
Identifiers & Physical Properties
| CAS No. | 4027-59-2 |
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| Molecular formula | C6H8N2O2 |
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| Average molar mass | 140.142 g/mol |
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| Monoisotopic mass | 140.0585775 g/mol |
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| SMILES | CCc1cc(C(=O)O)n[nH]1 |
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| InChIKey | WCQYJWRMYFJLRQ-UHFFFAOYSA-N |
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| PubChem CID | 4913402 |
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| ChEMBL | CHEMBL394498 |
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| EC No. | 881-389-1 |
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| DTXSID | DTXSID90406774 |
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Chemical & Physical Properties
| Melting point | 189-192.5 °C |
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| Boiling point | 385.5±30.0 °C(Predicted) |
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| Density | 1.318±0.06 g/cm3(Predicted) |
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| Storage conditions | Storage temp. 2-8°C |
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| pKa (acidity coefficient) | 15.36±0.10(Predicted) |
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| Appearance | White to off-white Solid |
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| GHS pictogram | GHS07 |
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| Signal word | Warning |
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| GHS hazard statements | H302-H315-H319-H335 |
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| GHS precautionary statements | P261-P305+P351+P338 |
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| Hazard class | IRRITANT |
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| Customs code | 2933199090 |
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Safety & Regulations
| Customs code | 2933199090 |
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| Signal word | Warning |
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| GHS pictogram | GHS07 |
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| Hazard class | IRRITANT |
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| GHS hazard statements | H302-H315-H319-H335 |
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| GHS precautionary statements | P261-P305+P351+P338 |
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