1,2,4-Trichlorobenzene CAS 120-82-1
| CAS No. | 120-82-1 |
| Molecular Formula | C6H3Cl3 |
| Molecular Weight | 181.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 181.45 g/mol gives 1,2,4-Trichlorobenzene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1,2,4-Trichlorobenzene (CAS 120-82-1), molecular formula C6H3Cl3 and molecular weight 181.45 g/mol, is a CATO reference standard with documented purity and traceability.
1,2,4-Trichlorobenzene (C6H3Cl3) contains chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C6H3Cl3 |
| Molecular Weight | 181.45 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Related Trichlorobenzene Standards
- 1,2,3-Trichlorobenzene (CAS 87-61-6)
- 1,3,5-Trichlorobenzene (CAS 108-70-3)
- 1，2，3-Trichlorobenzene-d3 (CAS 3907-98-0)
- 1,2,4-Trichlorobenzene-d3 (CAS 2199-72-6)
- 1,3,5-Trichlorobenzene-d3 (CAS 1198-60-3)
- 2,4,6-Trichlorobenzene-1,3-diamine (CAS 3102-85-0)
- 3,4,5-Trichlorobenzene-1,2-diamine (CAS 30064-28-9)
- 2,4,6-Trichlorobenzene-1,3,5-triol (CAS 56961-23-0)
Recommended Standards
- 4-Bromo-3-chloro-1H-pyrazole (CAS 27258-18-0)
- 1-Bromo-3-chlorobicyclo[1.1.1]Pentane (CAS 155635-19-1)
- 4-Bromo-5-chloro-1H-imidazole (CAS 17487-98-8)
- Copperaluminumoxide (CAS 12042-92-1)
- Ethyl 6-bromo-4-(methylamino)quinoline-3-carboxylate (CAS 1216486-66-6)
- 1-((tributylstannyl)methoxy)propan-2-amine (CAS 1557288-09-1)
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- 3-((Furan-2-ylmethylene)amino)-1H-1,2,4-triazole-5-carboxylic acid (CAS 213842-62-7)
- 2-Hexyl-1,3-thiazolidine-4-carboxylic acid (CAS 14347-74-1)
- 5-((4-Nitrobenzyl)oxy)-6-oxo-1,2,3,6-tetrahydropyridine-4-carboxylic acid (CAS 866008-20-0)
- 4-[(4-Ethyl-1-piperazinyl)methyl]-3-(trifluoromethyl)aniline (CAS 630125-91-6)
- 1-(4-Amino-3-chlorophenyl)cyclopropanecarboxylic acid (CAS 1314738-42-5)
- Fruquintinib Impurity 13 (CAS CATO-C4X-303713)
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