[5-(3,4-Dichlorophenyl)-1,2-oxazol-3-yl]methyl N-(4-methylphenyl)carbamate CAS 343374-60-7
| CAS No. | 343374-60-7 |
| Molecular Formula | C18H14Cl2N2O3 |
| Molecular Weight | 377.22 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 [5-(3,4-Dichlorophenyl)-1,2-oxazol-3-yl]methyl N-(4-methylphenyl)carbamate.
[5-(3,4-Dichlorophenyl)-1,2-oxazol-3-yl]methyl N-(4-methylphenyl)carbamate (CAS 343374-60-7), molecular formula C18H14Cl2N2O3 and molecular weight 377.22 g/mol, is a CATO reference standard with documented purity and traceability.
[5-(3,4-Dichlorophenyl)-1,2-oxazol-3-yl]methyl N-(4-methylphenyl)carbamate (C18H14Cl2N2O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C18H14Cl2N2O3 |
| Molecular Weight | 377.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichlorophenyl Standards
- (1-(3,4-Dichlorophenyl)-1H-1,2,3-triazol-4-yl)methyl p-tolylcarbamate (CAS 338419-43-5)
- 1-(3,5-Dichlorophenyl)-N-(4-methoxyphenyl)-5-methyl-1H-1,2,4-triazole-3-carboxamide (CAS 338408-57-4)
- 1-[(2,4-Dichlorophenyl)methyl]-3-[(4-methylphenyl)methyl]imidazolidine-2,4,5-trione (CAS 341966-53-8)
- N-(2,3-Dichlorophenyl)-4-(1,3-dioxoisoindolin-2-yl)butanamide (CAS 611175-96-3)
- 4-((2,4-Dichlorophenyl)thio)-2-phenylpyrimidine-5-carboxylic acid (CAS 477854-70-9)
- 1-(2,5-Dichlorophenyl)-3,4-dimethylpyrano[2,3-c]pyrazol-6(1H)-one (CAS 312621-02-6)
- 4-[(2Z)-3-(2,4-Dichlorophenyl)prop-2-enoyl]phenyl 2,2-dimethylpropanoate (CAS 298215-30-2)
- 4-(4-(2,4-Dichlorophenyl)thiazol-2-yl)-N,N-dimethylbenzamide (CAS 321429-97-4)
Recommended Standards
- (3S,3AR,6aS)-5-(2,4-dichlorophenyl)-2-methyl-3-phenyl-hexahydro-2H-pyrrolo[3,4-d][1,2]oxazole-4,6-dione (CAS 318951-50-7)
- (2E)-3-(2,4-Dimethylphenyl)-N-(4-iodophenyl)prop-2-enamide (CAS 329778-40-7)
- 1,2-Bis(2-chloro-5-nitrophenyl)disulfane (CAS 20201-05-2)
- 1,2-Bis(4-chloro-2-nitrophenyl)disulfane (CAS 2050-66-0)
- 4-(3,4-Difluorobenzoyl)quinoline (CAS 1706436-24-9)
- 2-3-4-Tri-O-acetyl-α-D-xylopyranosyl bromide - Stabilised with 2.5% CaCO3 (CAS 3068-31-3)
- 5-Fluoro-7-nitro-2-oxyindole (CAS 1082990-05-3)
- [4'-(Methylsulfanyl)[1,1'-biphenyl]-4-yl] acetonitrile (CAS 893734-20-8)
- Isaaconazole Sulfate Impurity 1 (CAS CATO-C4X-123684)
- 5-Bromo-3-methylquinazolin-4(3H)-one (CAS 1410973-83-9)
- (5-Bromo-2-fluoropyridin-3-yl)methanamine hydrochloride (CAS 1432754-51-2)
- 5-Bromo-1,2-dihydrospiro[indole-3,4'-oxane] (CAS 1160247-95-9)
- 4-Bromo-6-chloro-2-methyl-2H-indazole (CAS 1936553-00-2)
- (Leu31,Pro3?)-Neuropeptide Y (porcine) trifluoroacetate salt (CAS 125580-28-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com