1-Methyl-3-(pyridin-4-yl)-1H-pyrazole-5-carboxylic acid CAS 911468-31-0
| CAS No. | 911468-31-0 |
| Molecular Formula | C10H9N3O2 |
| Molecular Weight | 203.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 1-Methyl-3-(pyridin-4-yl)-1H-pyrazole-5-carboxylic acid (C10H9N3O2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
1-Methyl-3-(pyridin-4-yl)-1H-pyrazole-5-carboxylic acid (CAS 911468-31-0) is a high-purity analytical reference standard with the molecular formula C10H9N3O2 and a molecular weight of 203.20 g/mol.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 1-Methyl-3-(pyridin-4-yl)-1H-pyrazole-5-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 | C10H9N3O2 |
| Molecular Weight | 203.20 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 Methyl Standards
- 2-(5-(Pyridin-3-yl)-4H-1,2,4-triazol-3-yl)acetamide (CAS 1018155-92-4)
- 2-(3-(Pyridin-2-yl)-1H-pyrazol-1-yl)acetic acid (CAS 1019008-17-3)
- 4-Methyl-2-(pyridin-2-yl)-1H-imidazole-5-carboxylic acid (CAS 1083318-27-7)
- 3-Methyl-1-(pyridin-2-yl)-1h-pyrazole-4-carboxylic acid (CAS 1104279-87-9)
- 1-methyl-3-(pyridin-3-yl)-1H-pyrazole-4-carboxylic acid (CAS 1152510-52-5)
- 1-Methyl-3-(pyridin-4-yl)-1h-pyrazole-4-carboxylic acid (CAS 1152510-62-7)
- 1-Methyl-3-(pyridin-2-yl)-1h-pyrazole-4-carboxylic acid (CAS 1152510-81-0)
- 1-(Pyridin-2-ylmethyl)-1h-pyrazole-4-carboxylic acid (CAS 1153373-39-7)
Recommended Standards
- 1-Methyl-3-(pyridin-2-yl)-1H-pyrazole-5-carboxylic acid (CAS 334017-23-1)
- 1-Methyl-3-phenyl-1H-1,2,4-triazole-5-carboxylic acid (CAS 90145-38-3)
- 1-Methyl-3-(pyrazin-2-yl)-1H-pyrazole-5-carboxamide (CAS 2095410-85-6)
- 1-Methyl-5-(2-nitrophenyl)-1H-pyrazole (CAS 305811-46-5)
- 6-(thiophen-2-yl)-1H-indole (CAS 243972-30-7)
- N-(1,2-Diphenylethyl)nicotinamide (CAS 553-06-0)
- (2R)-2,3-diaminopropan-1-ol dihydrochloride (CAS 87584-93-8)
- 4-Nitro-1-phenyl-1H-imidazole (CAS 41384-83-2)
- (R)-4,5-Dimethoxy-2,3-dihydro-1H-inden-1-amine hydrochloride (CAS 168902-73-6)
- 3,7-Dichloro-5-nitro-1H-indazole (CAS 74209-23-7)
- 2,2,2-Trifluoro-1-(2-isopropylphenyl)ethan-1-amine (CAS 886369-11-5)
- (3-(2-Methyl-1H-imidazol-1-yl)phenyl)methanamine (CAS 912569-62-1)
- 5-(Furan-3-yl)nicotinaldehyde (CAS 1346687-21-5)
- Insulin Degludec Impurity 2 (CAS CATO-C4X-21572)
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