2,3,4,5,6-Pentachlorobenzaldehyde CAS 19635-52-0
| CAS No. | 19635-52-0 |
| Molecular Formula | C7HCl5O |
| Molecular Weight | 278.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 278.35 g/mol gives 2,3,4,5,6-Pentachlorobenzaldehyde distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 2,3,4,5,6-Pentachlorobenzaldehyde (CAS 19635-52-0), a certified reference material (molecular formula C7HCl5O, MW 278.35 g/mol) for analytical method development and quality control.
Owing to a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 2,3,4,5,6-Pentachlorobenzaldehyde is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 278.35 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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.
Physical & Chemical Properties
| Molecular Formula | C7HCl5O |
| Molecular Weight | 278.35 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.) | 1962 |
| Halogen Content | Cl-containing |
Recommended Standards
- Benzo[g]chrysene (CAS 196-78-1)
- 1,2,3,4,6,7,8,12-Octahydrobenzo[6,7]cyclohepta[1,2,3-de]isoquinoline-2-carboxamide (CAS 19701-67-8)
- Hydrazinecarboxylic acid 1-(2-methoxyethyl)-2-(phenylmethylene)-, 1,1-dimethylethyl ester (CAS 1956426-88-2)
- (1-(m-Tolyl)-3-(p-tolyl)-1H-pyrazol-4-yl)methanol (CAS 618441-87-5)
- 8-(tert-Butyl) 2-methyl 3-oxo-8-azabicyclo[3.2.1]octane-2,8-dicarboxylate (CAS 1140321-06-7)
- 4-Hydroxy-6-methylquinazoline-8-carboxylic acid (CAS 1269421-64-8)
- 2-(1,2,6-Trimethyl-1H-indol-3-yl)-ethylaminehydrochloride (CAS 1185298-59-2)
- 6-Amino-1H-indazole-3-carbonitrile (CAS 1360956-47-3)
- Dihydro-α-terpineol (CAS 498-81-7)
- 14-Pentadecenoic Acid (CAS 17351-34-7)
- tert-Butyl 4-formyl-4-methoxypiperidine-1-carboxylate (CAS 239073-93-9)
- Esomeprazole Strontium (1249803) (CAS 934714-36-0)
- (1S)-1-(4-phenylphenyl)ethan-1-ol (CAS 150283-02-6)
- Insulin Degludec Impurity 13 (CAS CATO-C4X-215713)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com