4-Chlorophenyl 4-((3,4-dichloro-1-methyl-1H-pyrazol-5-yl)oxy)benzenesulfonate CAS 303996-51-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 303996-51-2 |
| Molecular Formula | C16H11Cl3N2O4S |
| Molecular Weight | 433.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Chlorophenyl 4-((3,4-dichloro-1-methyl-1H-pyrazol-5-yl)oxy)benzenesulfonate (CAS 303996-51-2) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C16H11Cl3N2O4S. Molecular weight: 433.69 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C16H11Cl3N2O4S |
| Molecular Weight | 433.69 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chlorophenyl Standards
- {5-[(4-chlorophenyl)sulfanyl]-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl}methyl 2,2-dichloroacetate (CAS 318239-60-0)
- 5-(4-Chlorophenyl)-N-(2,5-dimethoxyphenyl)-1-phenyl-1H-pyrazole-3-carboxamide (CAS 477712-41-7)
- 2-((5-(4-Chlorophenyl)-4-(p-tolyl)-4H-1,2,4-triazol-3-yl)thio)-1-(p-tolyl)ethanone (CAS 476485-84-4)
- 2-{[(2-chlorophenyl)methyl]sulfanyl}-4-[(4-chlorophenyl)sulfanyl]-5,6,7,8-tetrahydroquinazoline (CAS 339019-41-9)
- 2-{[(4-chlorophenyl)methyl]sulfanyl}-4-[(4-chlorophenyl)sulfanyl]-5,6,7,8-tetrahydroquinazoline (CAS 339019-14-6)
- N-(4-Chlorophenyl)-2-((3-ethyl-4-oxo-3,4,5,6,7,8-hexahydrobenzo[4,5]thieno[2,3-d]pyrimidin-2-yl)thio)acetamide (CAS 618879-65-5)
- (E)-[(4-Chlorophenyl)methoxy]({4-[(4-chlorophenyl)sulfanyl]-3-nitrophenyl}methylidene)amine (CAS 338396-08-0)
- 4-[(1E)-3-(4-Chlorophenyl)-3-oxoprop-1-en-1-yl]phenyl 4-chlorobenzene-1-sulfonate (CAS 331460-95-8)
Recommended Standards
- 5-Acetyl-3-[(4-bromophenyl)methyl]-1-(4-chlorophenyl)-1,2,3,4-tetrahydropyrimidine-2,4-dione (CAS 321432-29-5)
- Hafnium telluride, 99.5% (metals basis) (CAS 39082-23-0)
- Disperse Brown 1 (CAS 23355-64-8)
- NBD-556 (CAS 333353-44-9)
- 4-Bromo-5-chlorobenzene-1,2-diamine (CAS 75293-95-7)
- 3',4',5,7-Tetrahydroxy 3,6,8-trimethoxyflavone (CAS 61451-85-2)
- (Z)-10-Tetradecen-1-ol (CAS 57393-02-9)
- Ethyl 3-(3-chlorophenyl)prop-2-ynoate (CAS 58686-68-3)
- 5-Amino-2-methoxypyridine-3-carboxamide (CAS 1249975-47-0)
- Des-Pro31-Tirzepatide (CAS CATO-CPTD788943)
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