3,5-Dimethyl-1h-pyrazole-4-sulfonic acid CAS 89280-34-2
| CAS No. | 89280-34-2 |
| Molecular Formula | C5H8N2O3S |
| Molecular Weight | 176.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 3,5-Dimethyl-1h-pyrazole-4-sulfonic acid (CAS 89280-34-2), a certified reference material (molecular formula C5H8N2O3S, MW 176.19 g/mol) for analytical method development and quality control.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, 3,5-Dimethyl-1h-pyrazole-4-sulfonic acid is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 176.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
As a certified reference material (CRM), 3,5-Dimethyl-1h-pyrazole-4-sulfonic 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 | C5H8N2O3S |
| Molecular Weight | 176.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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 | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 3,4-Dihydro-2H-thiopyran-5-carboxylic acid 1,1-dioxide (CAS 99418-18-5)
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- 4-Amino-6-fluoro-2-methylquinoline (CAS 288151-49-5)
- tert-Butyl 3,3-Dimethyl-4-(6-nitropyridin-3-yl)piperazine-1-carboxylate (CAS 1433990-38-5)
- tert-Butyl 3-((4-aminophenyl)thio)-piperidine-1-carboxylate (CAS 1196963-49-1)
- Ethyl 4-Methyl-5-nitropyridine-2-carboxylate (CAS 868551-26-2)
- 5-(Difluoromethyl)-2-fluoropyridine (CAS 1374659-41-2)
- (3R,5R)-5-(3-((4,4,4-trifluorobutyl)sulfonyl)propyl)pyrrolidin-3-ol (CAS 1670273-35-4)
- 2,6-Dichloropyridine-3,4,5-triamine (CAS 87535-56-6)
- N-(4-Ethoxybenzyl)-2-isopropoxyaniline (CAS 1040683-17-7)
- 2-({3-ethyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}sulfanyl)acetic acid (CAS 1179379-45-3)
- (4-(1-(Piperazin-1-yl)ethyl)phenyl)boronic acid (CAS 1704069-48-6)
- [14-31]-Semaglutide (CAS CATO-C4X-2226262)
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