| CAS No. | 178880-03-0 |
| Molecular Formula | C11H12N4O4S |
| Molecular Weight | 296.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-Methyl-3-(N-methyl-N-(pyridin-2-yl)sulfamoyl)-1H-pyrazole-4-carboxylic acid.
1-Methyl-3-(N-methyl-N-(pyridin-2-yl)sulfamoyl)-1H-pyrazole-4-carboxylic acid (CAS 178880-03-0) is a high-purity analytical reference standard with the molecular formula C11H12N4O4S and a molecular weight of 296.30 g/mol.
Structurally, 1-Methyl-3-(N-methyl-N-(pyridin-2-yl)sulfamoyl)-1H-pyrazole-4-carboxylic acid (C11H12N4O4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 296.30 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
| Molecular Formula | C11H12N4O4S |
| Molecular Weight | 296.30 g/mol |
| 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.) | 2008 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |