2-Chloro-4,5-dimethyloxazole CAS 73801-95-3
| CAS No. | 73801-95-3 |
| Molecular Formula | C5H6ClNO |
| Molecular Weight | 131.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2-Chloro-4,5-dimethyloxazole is closely related to an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2-Chloro-4,5-dimethyloxazole (CAS 73801-95-3) is a high-purity analytical reference standard with the molecular formula C5H6ClNO and a molecular weight of 131.56 g/mol.
2-Chloro-4,5-dimethyloxazole (C5H6ClNO) contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C5H6ClNO |
| Molecular Weight | 131.56 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 4-Chloro-1-methyl-1h-pyrazol-3-amine (CAS 1006349-08-1)
- 4-Chloro-3,5-dimethylisoxazole (CAS 10557-86-5)
- 4-Chloro-1-methyl-1H-pyrazol-5-amine (CAS 105675-84-1)
- 4-Chloro-5-methyl-1H-pyrazol-3-amine (CAS 110580-44-4)
- (4-chloro-2-furyl)methanamine (CAS 1204670-38-1)
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- 2-Chloro-N-2-propyn-1-ylacetamide (CAS 7458-03-9)
Recommended Standards
- 1-(2-Chloroethyl)-1H-1,2,4-triazole (CAS 3236-66-6)
- 1-(2-Chloroethyl)-1,2,3-triazole (CAS 70501-79-0)
- 3-(chloromethyl)-4-methyl-4H-1,2,4-triazole (CAS 740056-61-5)
- (5-Chlorofuran-2-yl)methanamine (CAS 214759-18-9)
- 6-(2-Methoxyethoxy)pyridine-3-carbothioamide (CAS 1016833-69-4)
- 3-Chlorosulfonyl-5-trifluoromethyl-4-(2-trifluoromethyl-phenyl)-thiophene-2-carboxylic acid methyl ester (CAS 1431555-27-9)
- N-((6-Chloro-[1,3]dioxolo[4,5-g]quinolin-7-yl)methyl)-N-(2-methoxyethyl)benzamide (CAS 606104-32-9)
- N-(4-((2-chlorophenyl)thio)phenyl)acetamide (CAS 339105-38-3)
- 1-((Cyclohexylmethyl)amino)propan-2-ol (CAS 127404-03-9)
- 1-Oxa-3,7-diazaspiro[4.4]nonan-2-one hydrochloride (CAS 1657033-44-7)
- N-(5-(Benzylthio)-1,3,4-thiadiazol-2-yl)-4-methylbenzamide (CAS 393566-70-6)
- 3-(4-Ethyl-5-sulfanyl-4H-1,2,4-triazol-3-yl)-1-(4-methylphenyl)-1,4-dihydropyridazin-4-one (CAS 478063-58-0)
- n,3-Dimethyl-N-((3-methylthiophen-2-yl)methyl)but-2-enamide (CAS 1197745-19-9)
- Semaglutide impurity 83 (CAS CATO-C4X-222683)
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