3-Methyl-1H-pyrazole-5-carboxylic acid CAS 696-22-0
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 696-22-0 |
| Molecular Formula | C5H6N2O2 |
| Molecular Weight | 126.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Methyl-1H-pyrazole-5-carboxylic acid (CAS 696-22-0) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C5H6N2O2. Molecular weight: 126.11 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C5H6N2O2 |
| Molecular Weight | 126.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
Recommended Standards
- 3-Methoxypyridazine 1-oxide (CAS 23200-93-3)
- 3-methyl-5-oxo-1,4-dihydropyrazole-4-carbaldehyde (CAS 349484-00-0)
- 3-Methoxypyrazine 1-oxide (CAS 23902-69-4)
- Ethyl 2-(5-methyl-3-phenylisoxazole-4-carboxamido)benzoate (CAS 544457-76-3)
- Diethyl 4-(methylamino)quinoline-3,6-dicarboxylate (CAS 1215669-46-7)
- 2-[(4-Ethylphenyl)amino]-4,6-dimethylnicotinonitrile (CAS 332862-42-7)
- 2-(2,5-Dimethyl-1H-pyrrol-1-yl)ethan-1-ol (CAS 83662-06-0)
- Praziquantel Impurity 5 (CAS 79848-92-3)
- Methyl 3-bromo-2,5-dichlorobenzoate (CAS 933585-62-7)
- Semaglutide impurity 210 (CAS CATO-C4X-2226210)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 13829788188 / jacky.chen@cato-chem.com