3-methyl-2-oxidanylidene-1,3-benzoxazole-6-sulfonyl chloride 3-methyl-2-oxo-1,3-benzoxazole-6-sulfonyl chloride 62522-63-8 A833824 CAS 62522-63-8
| CAS No. | 62522-63-8 |
| Molecular Formula | C8H12ClNO4S |
| Molecular Weight | 253.70 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-methyl-2-oxidanylidene-1,3-benzoxazole-6-sulfonyl chloride 3-methyl-2-oxo-1,3-benzoxazole-6-sulfonyl chloride 62522-63-8 A833824 (CAS 62522-63-8), molecular formula C8H12ClNO4S and molecular weight 253.70 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 3-methyl-2-oxidanylidene-1,3-benzoxazole-6-sulfonyl chloride 3-methyl-2-oxo-1,3-benzoxazole-6-sulfonyl chloride 62522-63-8 A833824 is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 253.70 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.
As a certified reference material (CRM), 3-methyl-2-oxidanylidene-1,3-benzoxazole-6-sulfonyl chloride 3-methyl-2-oxo-1,3-benzoxazole-6-sulfonyl chloride 62522-63-8 A833824 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 | C8H12ClNO4S |
| Molecular Weight | 253.70 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 |
| 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.) | 1974 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related methyl Standards
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