2-Chloro-4-nitrophenyl isocyanate 99% CAS 40397-95-3
| CAS No. | 40397-95-3 |
| Molecular Formula | C7H3ClN2O3 |
| Molecular Weight | 198.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 198.56 g/mol gives 2-Chloro-4-nitrophenyl isocyanate 99% distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 2-Chloro-4-nitrophenyl isocyanate 99% (CAS 40397-95-3), a certified reference material (molecular formula C7H3ClN2O3, MW 198.56 g/mol) for analytical method development and quality control.
Structurally, 2-Chloro-4-nitrophenyl isocyanate 99% (C7H3ClN2O3) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 198.56 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), 2-Chloro-4-nitrophenyl isocyanate 99% meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H3ClN2O3 |
| Molecular Weight | 198.56 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-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, water |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 5-Chloro-6-nitrobenzo[d]oxazole (CAS 116549-11-2)
- 7-Chloro-5-nitrobenzo[d]oxazole (CAS 133225-36-2)
- 5-Chloro-7-nitrobenzoxazole (CAS 1356111-15-3)
- 2-Chloro-4-nitrobenzoxazole (CAS 1378830-84-2)
- 3-Chloro-5-nitrobenzo[d]isoxazole (CAS 16302-63-9)
- 3-Chloro-7-nitro-1,2-benzisoxazole (CAS 178747-55-2)
- 1-Chloro-4-isocyanato-2-nitrobenzene (CAS 40397-96-4)
- 2-Chloro-5-nitrobenzo[d]oxazole (CAS 54120-91-1)
Recommended Standards
- 2-Chloro-5-nitrophenyl isocyanate 97% (CAS 68622-16-2)
- 2-Chloro-6-nitrobenzo[d]oxazole (CAS 39223-94-4)
- 2-Chloro-7-nitrobenzo[d]oxazole (CAS 928196-42-3)
- 1-(Chloromethyl)-5-methyl-3-(trifluoromethyl)-1H-pyrazole (CAS 1006356-44-0)
- 4-(chloromethyl)-N-ethyl-1,3-thiazol-2-amine hydrochloride (CAS 1955554-59-2)
- (S)-2-(4-chloro-3-methylphenyl)-2-(methylamino)ethan-1-ol (CAS 1213084-97-9)
- 3-(Bromomethyl)-2,4-dichlorobenzene-1-sulfonyl chloride (CAS 188440-21-3)
- 5-(2-(Hydroxymethyl)pyrrolidin-1-yl)furan-2-carbaldehyde (CAS 1249519-80-9)
- Carbidopa Impurity 23 (CAS CATO-C4X-231023)
- (1-((5-Chlorothiophen-2-yl)methyl)cyclopropyl)methanol (CAS 1492570-45-2)
- Methyl 4-bromo-3-methyl-2-nitrobenzoate (CAS 821773-44-8)
- 4-Chloro-5-hydroxy-1-(2-(trimethylsilyl)ethynyl)-1H-pyrrolo[2,3-b]pyridin (CAS 1448260-17-0)
- 1-[(3-methoxythien-2-yl)methyl]piperidine-4-carboxylic acid (CAS 2109414-99-3)
- Renin Inhibitor Peptide (CAS 50410-01-0)
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