1,2,3,5-Tetrachlorobenzene CAS 634-90-2
| CAS No. | 634-90-2 |
| Molecular Formula | C6H2Cl4 |
| Molecular Weight | 215.89 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1,2,3,5-Tetrachlorobenzene.
1,2,3,5-Tetrachlorobenzene (CAS 634-90-2), molecular formula C6H2Cl4 and molecular weight 215.89 g/mol, is a CATO reference standard with documented purity and traceability.
1,2,3,5-Tetrachlorobenzene (C6H2Cl4) 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 | C6H2Cl4 |
| Molecular Weight | 215.89 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at room temperature, 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 Tetrachlorobenzene Standards
Recommended Standards
- CAS 867-54-9 (CAS 867-54-9)
- 1,3-Dibromobutane (CAS 107-80-2)
- 2-Bromopropionyl bromide (CAS 563-76-8)
- (+/-)-2,3-Dibromobutane (CAS 598-71-0)
- 2-(1,1-Dioxidotetrahydro-2H-thiopyran-4-yl)thiazole-5-carbaldehyde (CAS 1890063-28-1)
- 3’-(Trifluoromethoxy)acetophenone (CAS 170141-63-6)
- 2-(tert-Butyl)-1H-benzo[d]imidazol-5-amine (CAS 177843-66-2)
- Topiroxostat impurity 69 (CAS CATO-C4X-105569)
- 2-Amino-N-(2-bromo-pyridin-4-ylmethyl)-N-cyclopropyl-acetamide (CAS 1353966-16-1)
- 3-(2,4-Dichlorobenzyl)oxazolidin-2-one (CAS 6317-29-9)
- 3-(1H-imidazol-1-yl)phenol (CAS 10041-03-9)
- 1-(5-Cyclopropyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl)pyrrolidin-3-amine (CAS 1710833-52-5)
- 3-Bromo-1H-pyrazolo[4,3-c]pyridin-4-amine (CAS 1701450-00-1)
- Tau Peptide (306-336) (Repeat 3 Domain) trifluoroacetate salt (CAS 330456-26-3)
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