2-Chloro-4-methylthiazole-5-sulfonyl fluoride CAS 2138408-82-7
| CAS No. | 2138408-82-7 |
| Molecular Formula | C4H3ClFNO2S2 |
| Molecular Weight | 215.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, 2-Chloro-4-methylthiazole-5-sulfonyl fluoride is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 215.65 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
2-Chloro-4-methylthiazole-5-sulfonyl fluoride (CAS 2138408-82-7), molecular formula C4H3ClFNO2S2 and molecular weight 215.65 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C4H3ClFNO2S2 |
| Molecular Weight | 215.65 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
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Recommended Standards
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- (3-Bromopropyl)cyclopropane (CAS 78300-38-6)
- 2-methoxy-6-(trifluoromethoxy)benzene-1-sulfonamide (CAS 1261617-69-9)
- 5-Pentyl-1,3,4-oxadiazol-2-amine (CAS 69741-93-1)
- 1142204-44-1 9301AC C19H21ClN2O4 [(2-{[2-(4-Chlorophenyl)ethyl]amino}-2-oxoethyl)-(4-methoxyphenyl)amino]acetic acid (CAS 1142204-44-1)
- (R)-2-(2-chloro-5-(trifluoromethyl)phenyl)pyrrolidine (CAS 1212917-82-2)
- N-((3-fluorophenyl)carbamoyl)-4-methylbenzenesulfonamide (CAS 349422-81-7)
- Semaglutide impurity 49 (CAS CATO-C4X-222649)
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