2-(2-Chloroethyl)-5-(3-nitrophenyl)-1,3-oxazole CAS 1094382-62-3
| CAS No. | 1094382-62-3 |
| Molecular Formula | C11H9ClN2O3 |
| Molecular Weight | 252.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(2-Chloroethyl)-5-(3-nitrophenyl)-1,3-oxazole (CAS 1094382-62-3), molecular formula C11H9ClN2O3 and molecular weight 252.65 g/mol, is a CATO reference standard with documented purity and traceability.
2-(2-Chloroethyl)-5-(3-nitrophenyl)-1,3-oxazole (C11H9ClN2O3) contains a nitrogen-containing heterocyclic scaffold, 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).
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 | C11H9ClN2O3 |
| Molecular Weight | 252.65 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloroethyl Standards
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Recommended Standards
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- 7-Isobutyl-1,3-dimethyl-8-((4-methylpiperidin-1-yl)methyl)-3,7-dihydro-1H-purine-2,6-dione (CAS 851941-62-3)
- 3-Amino-N-(methoxymethyl)picolinamide (CAS 1187930-84-2)
- 4-(Azocan-1-ylsulfonyl)benzenesulfonamide (CAS 55619-40-4)
- N-Benzyl-4-chloronicotinamide (CAS 62458-82-6)
- 4-(2-(Piperazin-1-yl)pyrido[3,2-d]pyrimidin-4-yl)thiomorpholine 1,1-dioxide dihydrochloride (CAS 39547-57-4)
- 3-Phenylisothiazole-4-carboxylic acid (CAS 18160-82-2)
- n-((5-Ethyl-1,2,4-oxadiazol-3-yl)methyl)-N-methylpyrrolidin-3-amine (CAS 1342472-07-4)
- Propyl(p-tolyl)sulfane (CAS 24599-52-8)
- 1-Bromodibenzo[b,d]furan-2-amine (CAS 667937-51-1)
- D-[Phe]6-Semaglutide (CAS CATO-CPTD788633)
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