5-Amino-2-hydroxypyridine-3-carboxylic acid CAS 89640-79-9
| CAS No. | 89640-79-9 |
| Molecular Formula | C6H6N2O3 |
| Molecular Weight | 154.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Amino-2-hydroxypyridine-3-carboxylic acid (CAS 89640-79-9), molecular formula C6H6N2O3 and molecular weight 154.12 g/mol, is a CATO reference standard with documented purity and traceability.
5-Amino-2-hydroxypyridine-3-carboxylic acid (C6H6N2O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C6H6N2O3 |
| Molecular Weight | 154.12 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 2 |
Related Amino Standards
- 4-Amino-3,5-difluorobenzonitrile, 97% (CAS 110301-23-0)
- 4-Amino-2,5-difluorobenzonitrile (CAS 112279-61-5)
- 4-Amino-2,3-difluorobenzonitrile (CAS 112279-71-7)
- 6-Amino-5-hydroxynicotinic acid (CAS 1219026-99-9)
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- 3-Amino-2-hydroxyisonicotinic acid (CAS 1368380-78-2)
Recommended Standards
- 5-Amino-2,4-difluorobenzonitrile (CAS 952285-54-0)
- 5-Amino-3-hydroxypicolinic acid (CAS 856835-10-4)
- 5-acetylfuran-3-carboxylic acid (CAS 89677-39-4)
- 5-Formyl-1-methyl-1H-pyrazole-3-carboxylic acid (CAS 221323-55-3)
- Niraparib Impurity 7 (E-Isomer) (CAS 68109-89-7)
- 6-Isopropoxy-2-azaspiro[3.3]heptane hydrochloride (CAS 1638767-14-2)
- 2-[6-(trifluoromethyl)-1,3-benzothiazol-2-yl]acetonitrile (CAS 1314518-62-1)
- N-ethylbicyclo[1.1.1]pentan-1-amine (CAS 2187435-34-1)
- [(2E)-3-(2-Methoxyphenyl)prop-2-en-1-yl](propan-2-yl)amine hydrochloride (CAS 1240590-75-3)
- 2,2-Dimethyl-1,2,3,4-tetrahydronaphthalen-1-one (CAS 2977-45-9)
- 2-(4-Bromo-2-chlorophenoxy)butanoyl chloride (CAS 1160257-42-0)
- 1-(5-Chloro-2-hydroxy-3-(hydroxymethyl)phenyl)ethan-1-one (CAS 50317-52-7)
- 5-Propylpyridin-3-ol (CAS 61893-04-7)
- Acetyl Hexapeptide-39 (CAS 1382088-38-1)
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