5-Methoxynicotinic Acid CAS 20826-03-3
| CAS No. | 20826-03-3 |
| Molecular Formula | C7H7NO3 |
| Molecular Weight | 153.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Methoxynicotinic Acid (CAS 20826-03-3), a certified reference material (molecular formula C7H7NO3, MW 153.14 g/mol) for analytical method development and quality control.
The molecular framework of 5-Methoxynicotinic Acid (C7H7NO3) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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 manufactures 5-Methoxynicotinic Acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H7NO3 |
| Molecular Weight | 153.14 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
Related Methoxynicotinic Standards
Recommended Standards
- 5-Methoxy-4-oxo-1,4-dihydropyridine-2-carbaldehyde (CAS 89791-88-8)
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- 5-Methoxy-1-methyl-3-oxo-2,3-dihydro-1H-pyrazole-4-carbonitrile (CAS 37016-72-1)
- 5-Methoxypyrimidine-2-carboxamide (CAS 87362-31-0)
- 2-Amino-2-(2-chlorophenyl)-6-hydroxycyclohexan-1-one hydrochloride (CAS 2173991-73-4)
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- (1S,3R)-1-Amino-1-phenylpentan-3-ol (CAS 1241681-13-9)
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- 4-(Dimethylamino)butanal HCl (CAS 2109021-35-2)
- 6-Ethyl-2-(methylthio)pyrimidin-4-ol (CAS 70967-37-2)
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- 5-Oxo-N-(m-tolyl)pyrrolidine-2-carboxamide (CAS 498558-11-5)
- 4-Bromo-6-chlorobenzo[d][1,3]dioxole (CAS 72736-56-2)
- Akt/SKG Substrate Peptide (CAS 276680-69-4)
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