6-Hydroxy-2-methoxy-4(3H)-pyrimidone CAS 1758-98-1
| CAS No. | 1758-98-1 |
| Molecular Formula | C5H6N2O3 |
| Molecular Weight | 142.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
6-Hydroxy-2-methoxy-4(3H)-pyrimidone (CAS 1758-98-1), molecular formula C5H6N2O3 and molecular weight 142.11 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H6N2O3, 6-Hydroxy-2-methoxy-4(3H)-pyrimidone contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 142.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C5H6N2O3 |
| Molecular Weight | 142.11 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
Related Hydroxy Standards
- Methyl 1-hydroxy-1H-pyrazole-4-carboxylate (CAS 108435-77-4)
- 5-Hydroxy-2-(hydroxymethyl)pyrimidin-4(1H)-one (CAS 120491-07-8)
- 5-Hydroxy-1-methyl-1h-pyrazole-4-carboxylic acid (CAS 1255352-25-0)
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- Methyl 5-hydroxy-2-furancarboxylate (CAS 1824438-04-1)
- 3-hydroxy-2-(hydroxymethyl)-4H-pyran-4-one (CAS 1968-51-0)
Recommended Standards
- 1-Methyl-2-oxo-2,3-dihydro-1H-imidazole-4-carboxylic acid (CAS 17245-61-3)
- 3-Methyl-2,5-dioxoimidazolidine-4-carbaldehyde (CAS 1779417-82-1)
- 3-Methoxyisoxazole-5-carboxamide (CAS 16880-10-7)
- 1-Methyl-3-oxo-2,3-dihydro-1H-pyrazole-4-carboxylic acid (CAS 178316-79-5)
- N-(3-chloro-2-methylphenyl)-6,7-dimethoxyquinazolin-4-amine (CAS 477855-15-5)
- 5-(5-(Trifluoromethyl)pyridin-2-yl)-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridin-2-amine (CAS 1293290-71-7)
- Ethyl 2-bromo-4-cyano-6-formylbenzoate (CAS 1805104-42-0)
- (4-Butoxy-2,6-dimethylphenyl)methanol (CAS 1443303-32-9)
- Tert-butyl 4-(5-amino-1h-pyrazol-1-yl)piperidine-1-carboxylate (CAS 872999-07-0)
- Azithromycin EP Impurity E (CAS 612069-27-9)
- (2-(tert-Butyl)-6-cyclopropoxyphenyl)(methyl)sulfane (CAS 1243361-77-4)
- (S)-1-Ethyl-N,N-dimethylpyrrolidine-2-carboxamide (CAS 107599-39-3)
- 1-(2-Hydroxy-4-methoxyphenyl)-2-phenylethanone (CAS 18439-96-8)
- Boc-Cholecystokinin Octapeptide (desulfated) (A-1295.0001) (CAS 25687-34-7)
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