4-Chlorophenylglyoxal hydrate CAS 4996-21-8
| CAS No. | 4996-21-8 |
| Molecular Formula | C8H7ClO3 |
| Molecular Weight | 186.59 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 4-Chlorophenylglyoxal hydrate.
CATO supplies 4-Chlorophenylglyoxal hydrate (CAS 4996-21-8), a certified reference material (molecular formula C8H7ClO3, MW 186.59 g/mol) for analytical method development and quality control.
4-Chlorophenylglyoxal hydrate (C8H7ClO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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), 4-Chlorophenylglyoxal hydrate 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 | C8H7ClO3 |
| Molecular Weight | 186.59 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
Related Chlorophenylglyoxal Standards
Recommended Standards
- 4-Chloro-3-methoxybenzoic acid (CAS 85740-98-3)
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- 5-Chloro-2-hydroxy-3-methylbenzoic acid (CAS 4386-40-7)
- 3-(2,4-Dichloro-5-fluorophenyl)-1-(2,4-difluorophenyl)-1H-pyrazole-4-carbaldehyde (CAS 618101-86-3)
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- Mogroside Ⅴ (CAS 88901-36-4)
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