4-(Chloromethyl)-5-methyl-2-(thiophen-2-yl)-1,3-oxazole CAS 202595-63-9
| CAS No. | 202595-63-9 |
| Molecular Formula | C9H8ClNOS |
| Molecular Weight | 213.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C9H8ClNOS, 4-(Chloromethyl)-5-methyl-2-(thiophen-2-yl)-1,3-oxazole contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 213.68 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
4-(Chloromethyl)-5-methyl-2-(thiophen-2-yl)-1,3-oxazole (CAS 202595-63-9) is a high-purity analytical reference standard with the molecular formula C9H8ClNOS and a molecular weight of 213.68 g/mol.
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.
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 | C9H8ClNOS |
| Molecular Weight | 213.68 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2014 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloromethyl Standards
- 2-(Chloromethyl)-6-methoxybenzo[d]thiazole (CAS 1056639-87-2)
- 4-(chloromethyl)-2-(5-methyl-2-furyl)-1,3-thiazole (CAS 1087784-63-1)
- 4-(chloromethyl)-5-methyl-2-(thiophen-3-yl)-1,3-oxazole (CAS 1107663-77-3)
- 2-Chloromethyl-7-methoxybenzo[d]thiazole, 97% (CAS 1188026-26-7)
- 2-Chloromethyl-4-methoxybenzo[d]thiazole, 97% (CAS 131105-82-3)
- 2-Chloromethyl-5-methoxybenzo[d]thiazole, 97% (CAS 131105-83-4)
- 4-((Chloromethyl)sulfonyl)-1,4-oxazepane (CAS 1342383-10-1)
- 2-(Chloromethyl)-3,4-dihydro-2h-1,4-benzothiazin-3-one (CAS 139331-42-3)
Recommended Standards
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- Mepenzolate Bromide (CAS 76-90-4)
- Ethyl 3-(hydroxymethyl)-5-methoxybenzoate (CAS 367519-86-6)
- 2,6-Dibromo-4-methylpyridin-3-ol (CAS 2852767-48-5)
- 1H-Benzimidazol-2-ylferrocene (CAS 34830-88-1)
- 5-Cyclopropoxy-2-(dimethylamino)isonicotinic acid (CAS 1243376-15-9)
- 2-Amino-3-(4-fluoro-2-(trifluoromethoxy)phenyl)propanoic acid (CAS 1435806-18-0)
- 5-(4-Chlorophenyl)nicotinamide (CAS 1356110-72-9)
- Semaglutide impurity 56 (CAS CATO-C4X-222656)
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