5-Bromothiazole-2-sulfonyl chloride CAS 1272357-53-5
| CAS No. | 1272357-53-5 |
| Molecular Formula | C3HBrClNO2S2 |
| Molecular Weight | 262.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-Bromothiazole-2-sulfonyl chloride (CAS 1272357-53-5), molecular formula C3HBrClNO2S2 and molecular weight 262.53 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-Bromothiazole-2-sulfonyl chloride (C3HBrClNO2S2) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine 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 262.53 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.
As a certified reference material (CRM), 5-Bromothiazole-2-sulfonyl chloride meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C3HBrClNO2S2 |
| Molecular Weight | 262.53 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.) | 1990 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Bromothiazole Standards
- 5-Benzyl-2-bromothiazole (CAS 1196153-11-3)
- 4-Benzyl-2-bromothiazole (CAS 73553-79-4)
- 4-Bromothiazole-2-sulfonic acid (CAS 1209460-13-8)
- Ethyl 2-bromothiazole-4-carboxylate (CAS 100367-77-9)
- Ethyl 5-Bromothiazole-2-carboxylate (CAS 1202237-88-4)
- Ethyl 4-bromothiazole-5-carboxylate (CAS 152300-60-2)
- Ethyl 2-Bromothiazole-5-carboxylate (CAS 41731-83-3)
- ethyl 5-bromothiazole-4-carboxylate (CAS 61830-23-7)
Recommended Standards
- N-(4-Bromo-3-chloro-2-methylphenyl)acetamide (CAS 125328-80-5)
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- N-(3-Bromobenzyl)-2-chloroacetamide (CAS 1248101-76-9)
- N-Ethyl 4-bromo-2-chlorobenzamide (CAS 1342639-11-5)
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- N-(3,4-Dichlorophenyl)-2-[(1-methyl-1H-imidazol-2-yl)sulfanyl]acetamide (CAS 303091-46-5)
- (((4-Iodo-1,2-phenylene)bis(oxy))bis(methylene))dibenzene (CAS 5736-55-0)
- Sodium Cromoglicate Impurity 20 (CAS CATO-C4X-201120)
- 1,4-Diphenyl-5,6,7,8,9,10-hexahydrocycloocta[d]pyridazine (CAS 68629-76-5)
- Biphenyl compound 2 (CAS CATO-C4X-26292)
- 8,11-Dichloro-5H-dibenzo[b,e][1,4]diazepine (CAS 50373-22-3)
- Benzyl L-leucinate hydrochloride (CAS 2462-35-3)
- Semaglutide Impurity 3 (CAS CATO-C4X-22263)
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