5-Methoxy-1-phenyl-1H-pyrazole-3-carboxylic acid CAS 60872-14-2
| CAS No. | 60872-14-2 |
| Molecular Formula | C11H10N2O3 |
| Molecular Weight | 218.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
5-Methoxy-1-phenyl-1H-pyrazole-3-carboxylic acid (CAS 60872-14-2), molecular formula C11H10N2O3 and molecular weight 218.21 g/mol, is a CATO reference standard with documented purity and traceability.
5-Methoxy-1-phenyl-1H-pyrazole-3-carboxylic acid (C11H10N2O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H10N2O3 |
| Molecular Weight | 218.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Nitrogen Atoms | 2 |
Related Methoxy Standards
- 2-(6-Methoxy-1H-indol-3-yl)-2-oxoacetamide (CAS 103858-66-8)
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- 3-Acetyl-8-methoxy-2H-cyclohepta[b]furan-2-one (CAS 1210-38-4)
- 5-Methoxy-2-(1H-pyrazol-1-yl)benzoic acid (CAS 1214622-45-3)
- 3-Acetyl-6-methoxy-2H-chromen-2-one (CAS 13252-80-7)
- 4-Methoxy-3-(1H-pyrazol-1-yl)benzoic acid (CAS 1368829-85-9)
- 3-Methoxy-4-(1H-pyrazol-4-yl)benzoic acid (CAS 1623119-25-4)
- 1-(4-Methoxy-2-nitrophenyl)-1H-pyrrole (CAS 59194-25-1)
Recommended Standards
- 5-Ethyl-4-oxo-1,4-dihydrocinnoline-3-carboxylic acid (CAS 36991-42-1)
- 5-Methoxy-1-phenyl-1h-pyrazole-4-carboxylic acid (CAS 88585-23-3)
- 5-Ethyl-3-(3-nitrophenyl)isoxazole (CAS 449181-21-9)
- 5-Methoxy-3-(2-nitrovinyl)-1H-indole (CAS 61675-19-2)
- 3-(4-Chlorophenyl)azetidine (CAS 7215-02-3)
- Methyl 2-hydroxy-4-(trifluoromethyl)benzoate (CAS 345-28-8)
- Ethyl 4-Piperidineacetate Hydrochloride (CAS 169458-04-2)
- 3-(2-Oxo-1,2-diphenylethoxy)propanoic acid (CAS 879896-64-7)
- Piperacillin Impurity 53 (CAS 65322-79-4)
- 3-Cyclopropyl-6-isopropyl-1-(4-methoxyphenyl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid (CAS 1018164-91-4)
- Thieno[3,2-d]pyrimidine-7-carboxamide (CAS 1356015-68-3)
- 8-Hydroxy-2-methylquinoline-7-carbaldehyde (CAS 13796-76-4)
- Gracillin (CAS 19083-00-2)
- Semaglutide impurity 270 (CAS CATO-C4X-2226270)
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