2,4,5-Trichlorobenzenesulfonic acid CAS 6378-25-2
| CAS No. | 6378-25-2 |
| Molecular Formula | C6H3Cl3O3S |
| Molecular Weight | 261.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2,4,5-Trichlorobenzenesulfonic acid is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2,4,5-Trichlorobenzenesulfonic acid (CAS 6378-25-2) is a high-purity analytical reference standard with the molecular formula C6H3Cl3O3S and a molecular weight of 261.51 g/mol.
Based on its molecular formula C6H3Cl3O3S, 2,4,5-Trichlorobenzenesulfonic acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 261.51 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), 2,4,5-Trichlorobenzenesulfonic acid 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 | C6H3Cl3O3S |
| Molecular Weight | 261.51 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Recommended Standards
- 8-Bromo-6-chloro-2-methylimidazo[1,2-b]pyridazin-3-amine (CAS 1935233-58-1)
- 2,4,6-Trichloro-5-(methylsulfonyl)pyrimidine (CAS 69293-47-6)
- 6-Bromo-8-chloro-2-methylimidazo[1,2-a]pyrazin-3-amine (CAS 1934673-58-1)
- 2,4-Dichloro-6-hydroxybenzene-1-sulfonyl chloride (CAS 95087-77-7)
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- 2-[(4-methylpiperazin-1-yl)methyl]morpholine (CAS 202991-96-6)
- Boc-D-Dap(Dde)-OH (CAS 1263047-33-1)
- 4-(4-Bromophenyl)-3H-1,2,4-triazole-3,5(4H)-dione (CAS 107553-79-7)
- [Formaldehyde Schiff-base]-Semaglutide Impurity 136 X TFA Salt (CAS CATO-C4X-2226136)
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