4-Hydroxypyridine-2,3-dicarboxylic acid CAS 53940-13-9
| CAS No. | 53940-13-9 |
| Molecular Formula | C7H5NO5 |
| Molecular Weight | 183.12 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-Hydroxypyridine-2,3-dicarboxylic acid.
4-Hydroxypyridine-2,3-dicarboxylic acid (CAS 53940-13-9), molecular formula C7H5NO5 and molecular weight 183.12 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 4-Hydroxypyridine-2,3-dicarboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 183.12 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 | C7H5NO5 |
| Molecular Weight | 183.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Nitrogen Atoms | 1 |
Related Hydroxypyridine Standards
- 5-Hydroxypyridine-3,4-dicarboxylic acid (CAS 17285-97-1)
- 4-Hydroxypyridine-2,5-dicarboxylic acid (CAS 2183489-21-4)
- 4-Hydroxypyridine-2,6-dicarboxylic acid (CAS 499-51-4)
- 1,1'-(4-Hydroxypyridine-2,6-diyl)bis(ethan-1-one) (CAS 119222-95-6)
- 1,1'-(5-Hydroxypyridine-3,4-diyl)bis(ethan-1-one) (CAS 1393557-13-5)
- 1,1'-(3-Hydroxypyridine-2,6-diyl)bis(ethan-1-one) (CAS 1393558-96-7)
- 1,1'-(2-Hydroxypyridine-3,5-diyl)bis(ethan-1-one) (CAS 1393566-77-2)
- 1,1'-(4-Hydroxypyridine-2,3-diyl)bis(ethan-1-one) (CAS 1393567-71-9)
Recommended Standards
- 4-Hydroxy-2-nitrobenzoic acid, 97% (CAS 74230-08-3)
- 4-Amino-5-nitropicolinic acid (CAS 84487-13-8)
- 4,5-Dihydroxy-2-nitrobenzaldehyde (CAS 73635-75-3)
- 4-Methyl-3,5-dinitropyridine (CAS 57927-98-7)
- Methyl 6-chloro-4-methyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-8-carboxylate (CAS 141761-83-3)
- 1-(4-Bromophenyl)-2,2-dichloroethanone (CAS 7716-86-1)
- tert-butyl 4-amino-1H-pyrazole-1-carboxylate (CAS 1018446-95-1)
- Desmethyl Thiosildenafil-d8 (CAS 1215321-44-0)
- 6-Chloro-4-pyrimidinyl 3-piperidinyl etherhydrochloride (CAS 1185311-81-2)
- 3-Cyclohexylpropionic Acid (CAS 701-97-3)
- (5-Amino-3,4-dihydroisoquinolin-2(1h)-yl)(cyclopropyl)methanone (CAS 1266891-38-6)
- 2-(2,2-Dimethyl-4-phenyltetrahydro-2H-pyran-4-yl)acetic acid (CAS 109878-50-4)
- 1-(2,6-Difluorophenyl)-3-((1-((2,5-dimethylfuran-3-yl)methyl)piperidin-4-yl)methyl)urea (CAS 1235319-01-3)
- Semaglutide impurity 227 (CAS CATO-C4X-2226227)
Why CATO?
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