5-Hydroxy-1-methyl-1h-pyrazole-4-carboxylic acid CAS 1255352-25-0
| CAS No. | 1255352-25-0 |
| Molecular Formula | C5H6N2O3 |
| Molecular Weight | 142.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Hydroxy-1-methyl-1h-pyrazole-4-carboxylic acid is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 5-Hydroxy-1-methyl-1h-pyrazole-4-carboxylic acid (CAS 1255352-25-0), a certified reference material (molecular formula C5H6N2O3, MW 142.11 g/mol) for analytical method development and quality control.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 5-Hydroxy-1-methyl-1h-pyrazole-4-carboxylic acid is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 142.11 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5-Hydroxy-1-methyl-1h-pyrazole-4-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H6N2O3 |
| Molecular Weight | 142.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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.) | 1990 |
| Nitrogen Atoms | 2 |
Related Hydroxy Standards
- Methyl 1-hydroxy-1H-pyrazole-4-carboxylate (CAS 108435-77-4)
- 5-Hydroxy-2-(hydroxymethyl)pyrimidin-4(1H)-one (CAS 120491-07-8)
- 4-Hydroxy-3-methyl-1h-pyrazole-5-carboxylic acid (CAS 1346270-06-1)
- 2-(5-Hydroxy-1H-imidazol-2-yl)acetic acid (CAS 1368879-81-5)
- 5-hydroxy-1-methyl-1,2,3,4-tetrahydropyrimidine-2,4-dione (CAS 15585-47-4)
- 6-Hydroxy-2-methoxy-4(3H)-pyrimidone (CAS 1758-98-1)
- Methyl 5-hydroxy-2-furancarboxylate (CAS 1824438-04-1)
- 3-hydroxy-2-(hydroxymethyl)-4H-pyran-4-one (CAS 1968-51-0)
Recommended Standards
- 2-amino-5-methyloxazole-4-carboxylic acid (CAS 1240596-17-1)
- (R)-2-(Furan-2-yl)-2-hydroxyacetic acid (CAS 130795-19-6)
- Acetic acid, cyano(formylamino)-, methyl ester (9CI) (CAS 130892-41-0)
- 1-Methyl-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid (CAS 119376-60-2)
- 5-(2,4-Difluorophenyl)thiophene-2-carbaldehyde (CAS 887986-73-4)
- Ethyl 4,4,4-trifluoro-3-(trifluoromethyl)butanoate (CAS 17327-34-3)
- Dynorphin A (1-6), porcine (CAS 75106-70-6)
- 3-Methyl-5-(5-methylisoxazol-3-yl)isoxazole-4-carboxylic acid (CAS 849066-63-3)
- Prop-2-en-1-yl N-[(1S,2S)-2-aminocyclobutyl]carbamate (CAS 2165630-44-2)
- 3-(3-Iodophenyl)propanal (CAS 1261570-30-2)
- N-[(1-Ethyl-1,4-dihydro-7-methyl-4-oxo-1,8-naphthyridin-3-yl)carbonyl]-D-aspartic Acid (CAS 1212087-50-7)
- 1-Methyl-1,3,7-triazaspiro[4.4]nonan-4-one (CAS 1363381-79-6)
- (E)-3-(2-Aminophenyl)acrylic acid (CAS 22469-15-4)
- Insulin Degludec Impurity 25 (CAS CATO-C4X-215725)
Why CATO?
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