1-((4-Chlorophenyl)sulfonyl)-4-(2-hydroxyethyl)-5-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one CAS 866040-21-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 866040-21-3 |
| Molecular Formula | C18H17ClN2O4S |
| Molecular Weight | 392.86 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-((4-Chlorophenyl)sulfonyl)-4-(2-hydroxyethyl)-5-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (CAS 866040-21-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C18H17ClN2O4S. Molecular weight: 392.86 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C18H17ClN2O4S |
| Molecular Weight | 392.86 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; 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.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 1-(Phenylsulfonyl)piperidin-4-one O-(3-chlorobenzoyl) oxime (CAS 477847-27-1)
- 1-(Phenylsulfonyl)piperidin-4-one O-(4-chlorobenzoyl) oxime (CAS 477847-24-8)
- 7-(Chlorodifluoromethyl)-2-(3-(2,5-dimethyl-1H-pyrrol-1-yl)thiophen-2-yl)-5-methylpyrazolo[1,5-a]pyrimidine (CAS 672949-51-8)
- rac-BINAP Pd G4 (CAS 1599466-90-6)
- Ethyl 2-(4-oxo-4,5-dihydro-1H-benzo[b][1,4]diazepin-2-yl)acetate (CAS 91806-95-0)
- Methyl 2-(2-aminoethyl)-6-chloroisonicotinate (CAS 1393566-39-6)
- 5-Chloro-2-isocyanato-1,3-diisopropylbenzene (CAS 63520-60-5)
- 3-Chloro-2-fluoro-4-(methylthio)pyridine (CAS 1823323-05-2)
- 1-(6-(3,4-Dihydroquinolin-1(2H)-yl)-4-methylpyridin-3-yl)ethan-1-ol (CAS 1355180-99-2)
- Semaglutide impurity 96 (CAS CATO-C4X-222696)
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