3-Nitro-4-phenoxybenzyl (4-chlorophenyl)carbamate CAS 338960-79-5
| CAS No. | 338960-79-5 |
| Molecular Formula | C20H15ClN2O5 |
| Molecular Weight | 398.80 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-Nitro-4-phenoxybenzyl (4-chlorophenyl)carbamate (CAS 338960-79-5), molecular formula C20H15ClN2O5 and molecular weight 398.80 g/mol, is a CATO reference standard with documented purity and traceability.
3-Nitro-4-phenoxybenzyl (4-chlorophenyl)carbamate (C20H15ClN2O5) contains a flavonoid 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C20H15ClN2O5 |
| Molecular Weight | 398.80 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 |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Nitro Standards
- (3-Nitro-4-phenoxyphenyl)methyl N-(3-chlorophenyl)carbamate (CAS 338960-91-1)
- [3-Nitro-4-(phenylsulfanyl)phenyl]methyl N-(4-fluorophenyl)carbamate (CAS 320424-20-2)
- 4-Nitro-N-(triphenylphosphoranylidene)aniline (CAS 14562-02-8)
- 2-Nitro-N-(triphenylphosphoranylidene)aniline (CAS 31706-27-1)
- Ethyl 2-(4-{[2-nitro-4-(trifluoromethyl)phenyl]amino}phenoxy)propanoate (CAS 73553-87-4)
- 2-Nitro-N-(4-(N-(pyrimidin-2-yl)sulfamoyl)phenyl)benzamide (CAS 455886-80-3)
- Benzyl (2-nitro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)carbamate (CAS 2377609-53-3)
- 3-Nitro-4-(phenylthio)benzyl 4-chlorobenzoate (CAS 320424-13-3)
Recommended Standards
- 2,4,6-Tribromo-3-(trifluoromethyl)phenol (CAS 384-87-2)
- 1311283-93-8 Chloro-acetic acid N'-[1-[4-(6-dimethylamino-4-trifluoromethyl pyridin-2-yl)-phenyl]-meth-(E)-ylidene]-N-methyl-hydrazide;95% MFCD19981267 (CAS 1311283-93-8)
- 1,3-Dichloro-2,5-diiodobenzene (CAS 27128-51-4)
- (E)-N-[(4-Benzylpiperazin-1-yl)[3-chloro-5-(trifluoromethyl)pyridin-2-yl]methylidene]hydroxylamine (CAS 320420-35-7)
- Methyl 2-(tert-butyl)piperidine-4-carboxylate (CAS 1554481-76-3)
- 4,7-Bis(5-bromothiophen-2-yl)-2-(2-butyloctyl)-5,6-difluoro-2H-benzo[d][1,2,3]triazole (CAS 1283099-29-5)
- (3,4-Dihydroxyphenyl)-2-pyridinyl-methanone Hydrobromide (CAS 31749-12-9)
- 3-Methoxy-4-((3-methylbenzyl)oxy)benzaldehyde (CAS 292173-01-4)
- 6-(Cyanomethyl)picolinic acid (CAS 312325-75-0)
- 6-Amino-3-chloromethyl-2-(trifluoromethyl)pyridine (CAS 1227595-56-3)
- 1-[4-(3-nitrophenyl)piperazin-1-yl]ethan-1-one (CAS 314061-17-1)
- 3-Fluoro-4-(propane-2-sulfonamido)benzene-1-sulfonamide (CAS 1183577-09-4)
- 3-(Dimethylamino)-1-(1-hydroxycyclohexyl)-1-propanone (CAS 103857-06-3)
- Semaglutide Impurity 187 (CAS CATO-C4X-2226187)
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