1,2-dichloro-3-(2-isocyanatoethyl)benzene CAS 73075-66-8
| CAS No. | 73075-66-8 |
| Molecular Formula | C9H7Cl2NO |
| Molecular Weight | 216.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,2-dichloro-3-(2-isocyanatoethyl)benzene (CAS 73075-66-8), molecular formula C9H7Cl2NO and molecular weight 216.06 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 1,2-dichloro-3-(2-isocyanatoethyl)benzene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 216.06 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | C9H7Cl2NO |
| Molecular Weight | 216.06 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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.) | 1977 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related dichloro Standards
- 3,3-Dichloro-1-methylindolin-2-one (CAS 114380-33-5)
- 1,2-Dichloro-4-(2-isocyanatoethyl)benzene (CAS 115706-18-8)
- 6,7-Dichloro-3,4-dihydroisoquinolin-1(2H)-one (CAS 115706-19-9)
- 6,8-Dichloro-3,4-dihydroquinolin-2(1H)-one (CAS 125030-86-6)
- 5,6-Dichloro-3,4-dihydroquinolin-2(1H)-one (CAS 126401-57-8)
- 7,8-Dichloro-1,2,3,4-tetrahydroquinolin-2-one (CAS 1423032-53-4)
- 6,7-Dichloro-3,4-dihydroquinolin-2(1H)-one (CAS 144485-75-6)
- 5,8-Dichloro-3,4-dihydroquinolin-2(1H)-one (CAS 144485-77-8)
Recommended Standards
- (5,6-dichloro-1H-indol-2-yl)methanol (CAS 201929-83-1)
- 1,3-Dichloro-2-(2-isocyanatoethyl)benzene (CAS 480439-03-0)
- Cyclopropyl(4,6-dichloro-3-pyridyl)methanone (CAS 1863098-74-1)
- 2-(3,5-Dichloro-2-methoxyphenyl)acetonitrile (CAS 952958-86-0)
- 6-Bromo-2-methyl-1H-indole (CAS 6127-19-1)
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- 4-[(2-Bromo-6-chlorophenyl)methyl]morpholine (CAS 1881290-95-4)
- N-(2-aminophenyl)-N-(3,4-dimethoxybenzyl)formamide (CAS 723738-37-2)
- 3,4,5-Tribromodiphenyl Ether (CAS 337513-54-9)
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