2-Chloro-4-(methylsulfonyl)pyridine CAS 99903-03-4
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 99903-03-4 |
| Molecular Formula | C6H6ClNO2S |
| Molecular Weight | 191.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Chloro-4-(methylsulfonyl)pyridine (CAS 99903-03-4) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C6H6ClNO2S. Molecular weight: 191.64 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C6H6ClNO2S |
| Molecular Weight | 191.64 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 5-Chloro-2-(methylsulfonyl)pyridine (CAS 100560-78-9)
- 2-Chloro-N-(1,3,4-thiadiazol-2-yl)propanamide (CAS 1019456-17-7)
- 5-Chloro-2-(1,3-dioxolan-2-yl)-1,3-thiazole (CAS 1080061-38-6)
- 2-Chloro-5-ethyl-1,3-thiazole-4-carboxylic acid (CAS 1194374-29-2)
- 2-Chloro-4-ethylthiazole-5-carboxylic acid (CAS 1194374-35-0)
- 4-Chloro-3-(methylsulfonyl)pyridine (CAS 1346535-76-9)
- Methyl 2-chloro-5-methylthiazole-4-carboxylate (CAS 1378819-18-1)
- 2-Chloro-5-methylthiazole-4-carbohydrazide (CAS 1379326-16-5)
Recommended Standards
- 2-Chloro-3-methanesulfonylpyridine (CAS 70682-09-6)
- 2-Chloro-4-methoxy-6-(methylthio)-1,3,5-triazine (CAS 4407-44-7)
- 2-Amino-2-(5-chlorothiophen-2-yl)acetic acid (CAS 89379-87-3)
- 1-(Benzyloxy)-4-bromo-3-chloro-2-fluorobenzene (CAS 1881330-85-3)
- 3-Methyl-6,7-dihydroquinolin-8(5H)-one (CAS 62230-65-3)
- 2-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)-2-azabicyclo[2.2.2]octane (CAS 2246437-55-6)
- (2-Iodophenyl)(5-methylpyridin-2-yl)methanone (CAS 1187163-35-4)
- Prasugrel Impurity 22 (CAS 204205-33-4)
- Ethyl 3-chloro-5-(chlorosulfonyl)benzoate (CAS 1155084-48-2)
- Semaglutide impurity 260 (CAS CATO-C4X-2226260)
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