2,3,4,5,6-Pentachlorostyrene CAS 83484-75-7
| CAS No. | 83484-75-7 |
| Molecular Formula | C8H3Cl5 |
| Molecular Weight | 276.37 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 2,3,4,5,6-Pentachlorostyrene.
2,3,4,5,6-Pentachlorostyrene (CAS 83484-75-7), molecular formula C8H3Cl5 and molecular weight 276.37 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2,3,4,5,6-Pentachlorostyrene (C8H3Cl5) contains chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 276.37 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), 2,3,4,5,6-Pentachlorostyrene 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 | C8H3Cl5 |
| Molecular Weight | 276.37 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | Cl-containing |
Recommended Standards
- 2,2-Dimethyl-4-oxo-4-(4-pentylphenyl)butanoic acid (CAS 951893-53-1)
- 2,7-Dimethoxythianthrene (CAS 54815-69-9)
- 2,2-Dimethyl-4-oxo-4-(2,3,4,5,6-pentamethylphenyl)butanoic acid (CAS 951893-77-9)
- 2-Debenzoyl rac Bopindolol (CAS 23869-98-9)
- 6-(Benzyloxy)-7-methoxy-3,4-dihydroisoquinoline (CAS 68360-22-5)
- 2-(2-fluorophenyl)ethane-1-sulfonamide (CAS 919354-05-5)
- 2-(Furan-2-carbonyl)cyclopentan-1-one (CAS 1249684-90-9)
- Tetrabutylammonium hydroxide hydrate (CAS 74296-38-1)
- 9-(Methylsulfonyl)-2-(pyrimidin-2-yl)-2,9-diazaspiro[5.5]undecane (CAS 959536-42-6)
- Pyrrolidine-3-carboxylic acid pyridin-2-ylamide hydrochloride (CAS 1229625-19-7)
- Dimethyl 3,4-dibromo-1H-pyrrole-2,5-dicarboxylate (CAS 473401-83-1)
- 12,12-Dimethyl-5,12-dihydroindeno[1,2-c]carbazole (CAS 1346645-54-2)
- Apremilast Impurity 114 (CAS CATO-C4X-1009114)
- Autoinducing Peptide I trifluoroacetate salt (CAS 200010-29-3)
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