2,3,4,5-Tetrachlorobenzaldehyde CAS 56962-16-4
| CAS No. | 56962-16-4 |
| Molecular Formula | C7H2Cl4O |
| Molecular Weight | 243.90 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2,3,4,5-Tetrachlorobenzaldehyde (CAS 56962-16-4), molecular formula C7H2Cl4O and molecular weight 243.90 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 2,3,4,5-Tetrachlorobenzaldehyde is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 243.90 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C7H2Cl4O |
| Molecular Weight | 243.90 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, water (slightly soluble) |
| 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.) | 1973 |
| Halogen Content | Cl-containing |
Recommended Standards
- 2-Bromo-1,3-dichloro-5-fluorobenzene (CAS 263333-82-0)
- 2,3,4-Trichlorobenzoyl Chloride (CAS 6660-54-4)
- 1-Bromo-2,5-dichloro-3-fluorobenzene (CAS 202865-57-4)
- 2,3,5-Trichlorobenzoyl Chloride (CAS 42221-48-7)
- 5-Hydroxy-2-isopropoxy-3-methylpyridine (CAS 1449008-14-3)
- Neratinib-d6 (CAS 1259519-18-0)
- 2,4-dichloro-7-methyl-pyrido[3,2-d]pyrimidine (CAS 1567624-24-1)
- N-(2-Ethoxyphenyl)-2-((5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl)thio)acetamide (CAS 898612-55-0)
- 3-(3-Chloropropanamido)-N-phenylbenzofuran-2-carboxamide (CAS 887884-78-8)
- 6-Chloro-9-(cyclohex-2-en-1-yl)-9H-purine (CAS 91066-65-8)
- 2,5-Dichloro-4-methylcinnamic acid (CAS 1807418-86-5)
- 2-(7-Bromo-1-isopropyl-4-oxo-1,4-dihydrocinnolin-3-yl)acetic acid (CAS 2765160-82-3)
- Methyl 4-(piperazin-1-ylsulfonyl)benzoate (CAS 919063-38-0)
- Peptide Impurity 41 (CAS CATO-CPTD788841)
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