2,3,4,6-Tetrachloro-5-hydroxy-benzaldehyde CAS 704892-44-4
| CAS No. | 704892-44-4 |
| Molecular Formula | C7H2Cl4O2 |
| Molecular Weight | 259.90 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2,3,4,6-Tetrachloro-5-hydroxy-benzaldehyde (CAS 704892-44-4), molecular formula C7H2Cl4O2 and molecular weight 259.90 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H2Cl4O2, 2,3,4,6-Tetrachloro-5-hydroxy-benzaldehyde contains 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 259.90 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.
As a certified reference material (CRM), 2,3,4,6-Tetrachloro-5-hydroxy-benzaldehyde 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 | C7H2Cl4O2 |
| Molecular Weight | 259.90 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
Related Tetrachloro Standards
- 2,3,5,6-Tetrachloro-4-methoxyphenol (CAS 484-67-3)
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- 2,2,6,6-Tetrachloro-1-hydroxycyclohexanecarbonitrile (CAS 1724-38-5)
- 1,3,6,8-Tetrachloro-2,7-naphthyridine (CAS 27224-97-1)
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- 4,5,6,7-Tetrachloro-1,3-dihydro-2H-benzo[d]imidazol-2-one (CAS 18392-41-1)
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Recommended Standards
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- 2-Fluoro-5-(trimethylstannyl)pyridine (CAS 660847-68-7)
- (5-Amino-1-(3-chloro-4-fluorophenyl)-1H-pyrazol-4-yl)(o-tolyl)methanone (CAS 618092-06-1)
- tert-Butyl (2-(azetidin-3-yl(methyl)amino)ethyl)carbamate (CAS 1193386-50-3)
- 2,5-Dimethyl-benzenesulfonyl fluoride (CAS 393-41-9)
- rac-tert-butyl (3R,4S)-3-amino-4-(4-ethoxyphenyl)piperidine-1-carboxylate (CAS 1969288-28-5)
- 3-Aminobenzylamine (CAS 4403-70-7)
- 4-Bromo-3-chloro-2-(2-methylpropoxy)pyridine (CAS 1881291-05-9)
- tert-butyl N-(2-chloropropyl)carbamate (CAS 272791-90-9)
- 7-Bromobenzo[d][1,3]dioxole-4-carbonitrile (CAS 1898014-67-9)
- Ethyl 2-methyl-5-nitrofuran-3-carboxylate (CAS 68967-34-0)
- Staphylococcus Aureus Protein A (SpA)-Derived Peptide (H-2228.0005) (CAS 144979-26-0)
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