1,4-dimethyl-1H-pyrazole-5-sulfonamide CAS 98389-46-9
| CAS No. | 98389-46-9 |
| Molecular Formula | C5H9N3O2S |
| Molecular Weight | 175.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 175.21 g/mol gives 1,4-dimethyl-1H-pyrazole-5-sulfonamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1,4-dimethyl-1H-pyrazole-5-sulfonamide (CAS 98389-46-9) is a high-purity analytical reference standard with the molecular formula C5H9N3O2S and a molecular weight of 175.21 g/mol.
Structurally, 1,4-dimethyl-1H-pyrazole-5-sulfonamide (C5H9N3O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 175.21 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), 1,4-dimethyl-1H-pyrazole-5-sulfonamide 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 | 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.) | 1985 |
| 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)
- 1,3-Dimethyl-1H-pyrazole-5-sulfonamide (CAS 88398-89-4)
- 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
- 1-Benzothiophen-3-ylisocyanate (CAS 321309-37-9)
- 1-Benzothiophen-5-yl-isocyanate (CAS 239097-78-0)
- 1-(Thiazol-2-yl)-1H-pyrrole-2-carbonitrile (CAS 439108-81-3)
- 1-Ethyl-1H-imidazole-2-sulfonamide (CAS 89501-88-2)
- 4-Bromo-3-chloro-2-(difluoromethyl)-6-methoxypyridine (CAS 1803688-56-3)
- Sodium Trifluoromethanesulfonate (CAS 2926-30-9)
- (3-Chloro-4-((2-chlorobenzyl)oxy)phenyl)boronic acid (CAS 870777-26-7)
- Methyl 2-amino-3-hydroxybutanoate (CAS 2065185-81-9)
- (6-Bromo-5-methylpyridin-3-yl)methanamine (CAS 1355231-24-1)
- Tadalafil Impurity 10 (CAS 100077-49-4)
- (E)-ethyl 2-(2-(4-tert-butylphenyl)hydrazono)-2-chloroacetate 148367-96-8 Ethyl 2-chloro-2-[2-(4-tert-butylphenyl)hydrazono]acetate (CAS 148367-96-8)
- 7-Chloro-4-((S)-3-methylmorpholin-4-yl)-2-((S)-3-methylmorpholin-4-yl)pyrido[2,3-d]pyrimidine (CAS 1009303-44-9)
- 5-Methyl-1-hexanol (CAS 70914-20-4)
- Semaglutide impurity 01 (CAS 1998701-31-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com