4-Chlorothiazole-2-sulfonyl chloride CAS 89501-96-2
| CAS No. | 89501-96-2 |
| Molecular Formula | C3HCl2NO2S2 |
| Molecular Weight | 218.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Chlorothiazole-2-sulfonyl chloride.
4-Chlorothiazole-2-sulfonyl chloride (CAS 89501-96-2) is a high-purity analytical reference standard with the molecular formula C3HCl2NO2S2 and a molecular weight of 218.08 g/mol.
Structurally, 4-Chlorothiazole-2-sulfonyl chloride (C3HCl2NO2S2) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 218.08 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C3HCl2NO2S2 |
| Molecular Weight | 218.08 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.) | 1982 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Chlorothiazole Standards
- 2-Chlorothiazole-5-sulfonyl chloride (CAS 88917-11-7)
- 5-Chlorothiazole-2-sulfonyl chloride (CAS 959997-70-7)
- 4-Chlorothiazole-2-sulfonamide (CAS 89501-94-0)
- Ethyl 2-Chlorothiazole-4-carboxylate (CAS 41731-52-6)
- Ethyl 2-Chlorothiazole-5-carboxylate (CAS 81449-93-6)
- Ethyl 4-chlorothiazole-5-carboxylate (CAS 444909-55-1)
- Ethyl 5-chlorothiazole-4-carboxylate (CAS 425392-45-6)
- 4-Chlorothiazole-5-carbonyl chloride (CAS 1133931-01-7)
Recommended Standards
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- 5,7-Dichloro-1,2,3,4-tetrahydroquinolin-8-ol (CAS 485403-38-1)
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- Mesalazine Impurity 42 (CAS 104786-99-4)
- 6-(4-Methoxyphenyl)-2-oxo-1,2-dihydropyridine-3-carbonitrile (CAS 147269-06-5)
- Hexanedioic acid, polymer with N1,N1,N4,N4-tetramethyl-1,4-benzenediamine and 2,2,4-trimethyl-1,3-pentanediol mono(2-methylpropanoate) (CAS 68922-29-2)
- 2-(Hydroxymethyl)tetrahydrofuran-2-carboxylic acid (CAS 442877-01-2)
- 4,5-Dibromo-N-(1-methyl-1h-pyrazol-3-yl)thiophene-2-carboxamide (CAS 1135099-88-5)
- 3-Vinylbenzenesulfonamide (CAS 205876-31-9)
- FLAG Epitope Peptide (CAS 98849-88-8)
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