5-[4-(Methylsulfonyl)phenyl]isoxazole-3-carboxylic Acid CAS 1082821-82-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1082821-82-6 |
| Molecular Formula | C11H9NO5S |
| Molecular Weight | 267.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-[4-(Methylsulfonyl)phenyl]isoxazole-3-carboxylic Acid (CAS 1082821-82-6) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C11H9NO5S. Molecular weight: 267.26 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C11H9NO5S |
| Molecular Weight | 267.26 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 2-cyclopropyl-1,1,3-trioxo-2,3-dihydro-1$l^{6},2-benzothiazole-6-carboxylic acid (CAS 1082558-21-1)
- N(4-Amino-S-triazin-2-yl)sulfanilic Acid (CAS 112299-11-3)
- 4-(1,1-Dioxido-3-oxo-1,2-benzisothiazol-2(3H)-yl)but-2-enoic acid (CAS 10295-14-4)
- 5-(Trifluoromethyl)pyrimidin-2-ol (CAS 83767-80-0)
- tert-Butyl 4-(5-acetylpyrimidin-2-yl)piperazine-1-carboxylate (CAS 1703794-90-4)
- (R)-3-(1-Aminobutyl)aniline (CAS 1213885-65-4)
- (3AS,8aS)-3,3a,8,8a-tetrahydrospiro[indeno[1,2-d]oxazole-2,3'-oxetane] (CAS 1556097-45-0)
- (5-(Difluoromethyl)-3-fluoro-2-methylpyridin-4-yl)methanamine (CAS 1805531-25-2)
- 6-Amino-3-iodo-5-nitro-1h-pyridin-2-one (CAS 642460-96-6)
- [Nva12]-Tirzepatide (CAS CATO-C4X-324042)
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