1,3-Dimethyl-1H-pyrazole-5-sulfonamide CAS 88398-89-4
| CAS No. | 88398-89-4 |
| Molecular Formula | C5H9N3O2S |
| Molecular Weight | 175.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1,3-Dimethyl-1H-pyrazole-5-sulfonamide.
CATO supplies 1,3-Dimethyl-1H-pyrazole-5-sulfonamide (CAS 88398-89-4), a certified reference material (molecular formula C5H9N3O2S, MW 175.21 g/mol) for analytical method development and quality control.
Based on its molecular formula C5H9N3O2S, 1,3-Dimethyl-1H-pyrazole-5-sulfonamide contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 175.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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.
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.
Physical & Chemical Properties
| Molecular Formula | C5H9N3O2S |
| Molecular Weight | 175.21 g/mol |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Dimethyl Standards
- N,1-dimethyl-1H-pyrazole-5-sulfonamide (CAS 1263275-29-1)
- 1,5-Dimethyl-1h-pyrazole-3-sulfonamide (CAS 1375474-25-1)
- 1,2-Dimethyl-1h-imidazole-4-sulfonamide (CAS 415913-06-3)
- 1,4-dimethyl-1H-pyrazole-5-sulfonamide (CAS 98389-46-9)
- 3,5-Dimethyl-1h-pyrazole-4-sulfonamide (CAS 88398-54-3)
- N,1-dimethyl-1h-imidazole-4-sulfonamide (CAS 410545-45-8)
- (1,2-Dimethyl-1H-benzo[d]imidazol-6-yl)methanamine (CAS 1038387-95-9)
- (1,5-Dimethyl-1H-indazol-3-yl)methanamine (CAS 1060817-08-4)
Recommended Standards
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