4-Oxo-1,4-dihydropyridine-3-carboxylic acid CAS 72676-96-1
| CAS No. | 72676-96-1 |
| Molecular Formula | C6H5NO3 |
| Molecular Weight | 139.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO supplies 4-Oxo-1,4-dihydropyridine-3-carboxylic acid (CAS 72676-96-1), a certified reference material (molecular formula C6H5NO3, MW 139.11 g/mol) for analytical method development and quality control.
Structurally, 4-Oxo-1,4-dihydropyridine-3-carboxylic acid (C6H5NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 139.11 g/mol, it falls into the low-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 4-Oxo-1,4-dihydropyridine-3-carboxylic acid 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 | C6H5NO3 |
| Molecular Weight | 139.11 g/mol |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 1 |
Related Oxo Standards
- 2-Oxo-2,3-dihydropyridine-3-carboxylic acid (CAS 1314901-45-5)
- 2-Oxo-2,3-dihydropyridine-4-carboxylic acid (CAS 169253-31-0)
- 4-Oxo-1,4-dihydropyridine-2-carboxylic acid (CAS 98321-24-5)
- 1-Methyl-1,4-dihydropyridine-3-carboxylic acid (CAS 140201-08-7)
- 1-Methyl-1,2-dihydropyridine-3-carboxamide (CAS 23338-80-9)
- 2-Oxo-1,2-dihydropyridine-3-carboxamide (CAS 10128-92-4)
- 4-Oxo-1,4-dihydropyridine-3-carboxamide (CAS 89640-65-3)
- 6-Oxo-1,6-dihydropyridine-2-carboxamide (CAS 89640-67-5)
Recommended Standards
- 5-Aminopyrazine-2-carboxylic Acid (CAS 40155-43-9)
- 4-Nitrosoresorcinol (CAS 698-31-7)
- 5-Amino-pyridazine-4-carboxylic acid (CAS 21579-37-3)
- 4-Nitropyridin-2-amine (CAS 4487-50-7)
- (4-Methylpiperazin-1-yl)(1-phenyl-3-(pyridin-3-yl)-1H-pyrazol-4-yl)methanone (CAS 882222-22-2)
- (3-Amino-7-(2-chloroethoxy)benzofuran-2-yl)(phenyl)methanone (CAS 882865-27-2)
- 1-(4-Propyl-4H-1,2,4-triazol-3-yl)ethanamine dihydrochloride (CAS 1255717-16-8)
- 1-(2,4-Dichlorobenzyl)-N-(2,5-dimethoxyphenyl)-2-oxo-1,2-dihydropyridine-3-carboxamide (CAS 320419-84-9)
- 4819-98-1 DIPHENYL-4-D1 (CAS 4819-98-1)
- (2S)-2-Methyloctahydroquinolin-4(1H)-one (CAS 877076-38-5)
- (S)-2-Amino-N-cyclopropyl-N-(3-methoxybenzyl)propanamide (CAS 1354006-67-9)
- Darolutamide Impurity 30 (CAS CATO-C4X-310630)
- Ethyl (Z)-3-(benzylamino)-4,4,4-trifluorobut-2-enoate (CAS 170804-10-1)
- Galanin (1-13)-Neuropeptide Y (25-36) amide (CAS 147138-51-0)
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