1,2,4-Trichloro-3,5-difluorobenzene CAS 13656-67-2
| CAS No. | 13656-67-2 |
| Molecular Formula | C6HCl3F2 |
| Molecular Weight | 217.43 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 1,2,4-Trichloro-3,5-difluorobenzene.
1,2,4-Trichloro-3,5-difluorobenzene (CAS 13656-67-2) is a high-purity analytical reference standard with the molecular formula C6HCl3F2 and a molecular weight of 217.43 g/mol.
Structurally, 1,2,4-Trichloro-3,5-difluorobenzene (C6HCl3F2) contains fluorine/chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 217.43 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
CATO manufactures 1,2,4-Trichloro-3,5-difluorobenzene under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6HCl3F2 |
| Molecular Weight | 217.43 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Halogen Content | F/Cl-containing |
Related Trichloro Standards
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- Tuberculostearic Acid (CAS 542-47-2)
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Why CATO?
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