5-Chloro-2,3-dihydroxybenzaldehyde CAS 73275-96-4
| CAS No. | 73275-96-4 |
| Molecular Formula | C7H5ClO3 |
| Molecular Weight | 172.57 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 5-Chloro-2,3-dihydroxybenzaldehyde.
CATO supplies 5-Chloro-2,3-dihydroxybenzaldehyde (CAS 73275-96-4), a certified reference material (molecular formula C7H5ClO3, MW 172.57 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 5-Chloro-2,3-dihydroxybenzaldehyde is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 172.57 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C7H5ClO3 |
| Molecular Weight | 172.57 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, 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 3-Chloro-5-methyl-2-nitropyridine (CAS 1210909-07-1)
- 6-Chloro-3-methyl-2-nitropyridine (CAS 1211516-41-4)
- 6-Chloro-5-methyl-3-pyridazinecarboxylic acid (CAS 1211516-60-7)
- 6-Chloro-N-hydroxypyridine-2-carboxamide (CAS 125309-38-8)
- Methyl 5-chloro-3-pyridazinecarboxylate (CAS 1256786-31-8)
- 6-Chloro-N-hydroxynicotinamide (CAS 1263094-64-9)
- 5-Chloro-N-hydroxypicolinamide (CAS 1289026-43-2)
- 6-Chloro-2-methylpyrimidine-4-carboxylic acid (CAS 136518-06-4)
Recommended Standards
- 5-Chloro-1-methyl-6-oxo-1,6-dihydropyridazine-4-carbaldehyde (CAS 2822540-23-6)
- 5-Chloro-2-methylpyrimidine-4-carboxylic acid (CAS 74840-47-4)
- 5-Amino-6-chloropyridine-3-carboxylic acid (CAS 72587-17-8)
- 5-Chloro-3-methoxypyrazine-2-carbaldehyde (CAS 614730-18-6)
- 1-Chloro-4-methoxy-2,4-dimethylpentane (CAS 1482347-57-8)
- 2-(1-Ethynylcyclobutyl)pyridine (CAS 1211596-04-1)
- 2-(4-methylphenyl)propanal (CAS 99-72-9)
- 1-(Cyclopropylmethyl)-3,5-dimethyl-1h-pyrazol-4-amine (CAS 1156169-34-4)
- (R)-(1-Methylpyrrolidin-2-yl)methanamine (CAS 66411-53-8)
- 1,2,3,4-Tetrahydro-1-isoquinolinecarboxylic Acid (CAS 41034-52-0)
- 3-Methylbenzo[b]thiophen-5-ol (CAS 3610-07-9)
- (3,5-Difluorophenyl)trimethylsilane (CAS 149130-47-2)
- Rel-(1R,2R)-2-(aminomethyl)cyclohexan-1-amine hydrochloride (CAS 24717-04-2)
- Semaglutide Impurity 167 (CAS CATO-C4X-2226167)
Why CATO?
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