2,5-Dichloro-4-(5-hydroxy-3-methyl-1H-pyrazol-1-yl)benzenesulfonic acid dihydrate CAS 306935-68-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 306935-68-2 |
| Molecular Formula | C18H12ClN3S |
| Molecular Weight | 337.83 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,5-Dichloro-4-(5-hydroxy-3-methyl-1H-pyrazol-1-yl)benzenesulfonic acid dihydrate (CAS 306935-68-2) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C18H12ClN3S. Molecular weight: 337.83 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C18H12ClN3S |
| Molecular Weight | 337.83 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 2-(Benzylsulfanyl)-4-chloro-6-phenylpyrimidine-5-carbonitrile (CAS 303985-04-8)
- 2-{6-[(4-chlorophenyl)sulfanyl]pyridazin-3-yl}-2-phenylacetonitrile (CAS 339026-43-6)
- 2-(4-Chlorophenyl)-2-(6-(phenylthio)pyridazin-3-yl)acetonitrile (CAS 303997-39-9)
- 4-Thien-2-ylbenzoyl chloride (CAS 181132-70-7)
- ((2S,5R)-5-(2,4-Dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-2-yl)methyl dihydrogen phosphate (CAS 117605-34-2)
- 3-(3-Fluoro-5-nitrophenyl)pyridine (CAS 1211529-72-4)
- Sargaquinoic acid (CAS 70363-87-0)
- N-(4-Chloro-5-cyano-7H-pyrrolo[2,3-d]pyrimidin-2-yl)pivalamide (CAS 1000981-99-6)
- 6,7-Dimethoxy-1-((6-nitrobenzo[d][1,3]dioxol-5-yl)methyl)-3,4-dihydroisoquinoline (CAS 42971-18-6)
- Q-Peptide trifluoroacetate salt (CAS 1361235-89-3)
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