5-(Pyridin-3-yl)-4H-pyrazole-3-carboxylic acid CAS 904813-10-1
| CAS No. | 904813-10-1 |
| Molecular Formula | C9H7N3O2 |
| Molecular Weight | 189.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 189.17 g/mol gives 5-(Pyridin-3-yl)-4H-pyrazole-3-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5-(Pyridin-3-yl)-4H-pyrazole-3-carboxylic acid (CAS 904813-10-1), a certified reference material (molecular formula C9H7N3O2, MW 189.17 g/mol) for analytical method development and quality control.
5-(Pyridin-3-yl)-4H-pyrazole-3-carboxylic acid (C9H7N3O2) 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. 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.
As a certified reference material (CRM), 5-(Pyridin-3-yl)-4H-pyrazole-3-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H7N3O2 |
| Molecular Weight | 189.17 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Related Pyridin Standards
- 1-(Pyridin-2-yl)-1H-pyrazole-3-carboxylic acid (CAS 1014631-58-3)
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- 1-(Pyridin-3-yl)-1H-pyrazole-4-carboxylic acid (CAS 1014631-89-0)
- 5-(Pyridin-3-yl)-1h-pyrazole-4-carboxylic acid (CAS 1152539-87-1)
- 3-(Pyridin-2-yl)-1H-pyrazole-4-carboxylic acid (CAS 1152539-92-8)
- 1-(Pyridin-4-yl)-1H-pyrazole-4-carboxylic acid (CAS 1155066-46-8)
- 4-(Pyridin-3-yl)-1H-pyrazole-3-carboxylic acid (CAS 117784-26-6)
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Recommended Standards
- 5-(Pyridin-3-yl)-1H-imidazole-4-carboxylic acid (CAS 859076-83-8)
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- 5-(Pyridin-2-yl)furan-2-carboxylic acid (CAS 862089-25-6)
- 5-(Pyridin-3-yl)pyrimidine-2,4(1H,3H)-dione (CAS 56817-28-8)
- 6-Fluoro-2,4-bis(trifluoromethyl)-1H-benzimidazole (CAS 1262416-21-6)
- 2-(((tert-Butyldimethylsilyl)oxy)methyl)-6-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1623766-78-8)
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- 2-Amino-4-(methylsulfonyl)-N-(tetrahydro-2H-pyran-4-yl)butanamide (CAS 1218167-53-3)
- 1-(2-Chloroethoxy)-4-(chloromethyl)benzene (CAS 99847-87-7)
- (4-Chloro-3,5-dimethylthiophen-2-yl)(phenyl)methanol (CAS 1443326-84-8)
- Des-[Gly]31-Semaglutide (CAS CATO-C4X-2226156)
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