2-Methyloxazole-5-sulfonyl chloride CAS 1909316-63-7
| CAS No. | 1909316-63-7 |
| Molecular Formula | C4H4ClNO3S |
| Molecular Weight | 181.60 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 2-Methyloxazole-5-sulfonyl chloride.
2-Methyloxazole-5-sulfonyl chloride (CAS 1909316-63-7) is a high-purity analytical reference standard with the molecular formula C4H4ClNO3S and a molecular weight of 181.60 g/mol.
Structurally, 2-Methyloxazole-5-sulfonyl chloride (C4H4ClNO3S) 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 181.60 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.
As a certified reference material (CRM), 2-Methyloxazole-5-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 | C4H4ClNO3S |
| Molecular Weight | 181.60 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methyloxazole Standards
- 4-Methyloxazole-2-sulfonyl chloride (CAS 1260663-54-4)
- 2-Methyloxazole-4-sulfonyl chloride (CAS 1793114-90-5)
- 2-Methyloxazole-4-carboxylic acid methoxymethylamide, 97% (CAS 875553-59-6)
- 2-Acetyl-5-methyloxazole-4-carboxamide (CAS 61183-14-0)
- 2-Phenyl-5-methyloxazole-4-carboxylic Acid (CAS 18735-74-5)
- Ethyl 2-Methyloxazole-4-carboxylate (CAS 10200-43-8)
- 5-Ethyl-2-methyloxazole-4-carboxylic acid (CAS 113366-75-9)
- Methyl 2-Methyloxazole-5-acetate (CAS 1276083-60-3)
Recommended Standards
- 3-Chloro-5-(methylsulfonyl)-1H-1,2,4-triazole (CAS 346631-06-9)
- (1,2-Oxazol-5-yl)methanesulfonyl chloride (CAS 1781708-19-7)
- 3-Methylisoxazole-4-sulfonyl chloride (CAS 858489-87-9)
- 1,2-oxazol-3-ylmethanesulfonyl chloride (CAS 1334148-86-5)
- 2-(4-Methoxypyrrolidin-2-yl)-1-methyl-1H-benzo[d]imidazole (CAS 1094345-76-2)
- N,2-dimethyl-4,5,6,7-tetrahydro-1,3-benzothiazole-4-carboxamide (CAS 95203-31-9)
- (3R,8aS)-hexahydro-1H-pyrrolo[2,1-c][1,4]oxazine-3-carboxylic acid (CAS 1821818-54-5)
- 2-(4-(4-Chlorophenyl)thiazol-2-yl)ethan-1-amine (CAS 641993-24-0)
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- 1,4-Oxazocan-6-ol (CAS 2010092-66-5)
- 3-Chloro-2,2-dimethylbut-3-enoic acid (CAS 56663-75-3)
- Insulin B (22-25) (CAS 34367-73-2)
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