3320-83-0 Benzene, 1-chloro-2-isocyanato- 2-Chlorophenyl isocyanate Isocyanic acid, o-chlorophenyl ester (8CI) o-Chlorophenyl isocyanate EINECS 222-023-7 NSC 8761 EC 222-023-7 CAS 3320-83-0
| CAS No. | 3320-83-0 |
| Molecular Formula | C7H4ClNO |
| Molecular Weight | 153.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3320-83-0 Benzene, 1-chloro-2-isocyanato- 2-Chlorophenyl isocyanate Isocyanic acid, o-chlorophenyl ester (8CI) o-Chlorophenyl isocyanate EINECS 222-023-7 NSC 8761 EC 222-023-7 (CAS 3320-83-0) is a high-purity analytical reference standard with the molecular formula C7H4ClNO and a molecular weight of 153.57 g/mol.
The molecular framework of 3320-83-0 Benzene, 1-chloro-2-isocyanato- 2-Chlorophenyl isocyanate Isocyanic acid, o-chlorophenyl ester (8CI) o-Chlorophenyl isocyanate EINECS 222-023-7 NSC 8761 EC 222-023-7 (C7H4ClNO) is characterized by an amide group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), 3320-83-0 Benzene, 1-chloro-2-isocyanato- 2-Chlorophenyl isocyanate Isocyanic acid, o-chlorophenyl ester (8CI) o-Chlorophenyl isocyanate EINECS 222-023-7 NSC 8761 EC 222-023-7 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 | C7H4ClNO |
| Molecular Weight | 153.57 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 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
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