5-Methoxypyrimidin-2(1H)-one CAS 16290-93-0
| CAS No. | 16290-93-0 |
| Molecular Formula | C5H6N2O2 |
| Molecular Weight | 126.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Methoxypyrimidin-2(1H)-one (CAS 16290-93-0) is a high-purity analytical reference standard with the molecular formula C5H6N2O2 and a molecular weight of 126.11 g/mol.
Based on its molecular formula C5H6N2O2, 5-Methoxypyrimidin-2(1H)-one 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 126.11 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).
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.
As a certified reference material (CRM), 5-Methoxypyrimidin-2(1H)-one 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 | C5H6N2O2 |
| Molecular Weight | 126.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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.) | 1961 |
| Nitrogen Atoms | 2 |
Related Methoxypyrimidin Standards
- 2-Methoxypyrimidin-5-ol (CAS 91233-70-4)
- 4-Methoxypyrimidin-5-ol (CAS 2383609-53-6)
- 5-Methoxypyrimidin-4(3H)-one (CAS 71133-22-7)
- 5-Methoxypyrimidin-4-ol (CAS 695-87-4)
- 4-Methoxypyrimidin-2-amine (CAS 155-90-8)
- 5-methoxypyrimidin-4-amine (CAS 695-86-3)
- (6-Methoxypyrimidin-4-yl)methanamine (CAS 1363383-16-7)
- (5-Methoxypyrimidin-2-yl)methanamine (CAS 1553867-87-0)
Recommended Standards
- 1-Pyrazoleacetic Acid (CAS 16034-48-3)
- (1R,5S)-6-Oxabicyclo[3.2.0]heptane-3,7-dione (CAS 1638743-91-5)
- 4-(Hydroxymethyl)furan-2-carbaldehyde (CAS 158360-01-1)
- (1S,5R)-6-Oxabicyclo[3.2.0]heptane-3,7-dione (CAS 1638744-42-9)
- 6-Bromo-3-methylisochroman-1-one (CAS 1374357-85-3)
- 7-(benzenesulfonyl)-2,4-dichloro-7H-pyrrolo[2,3-d]pyrimidine (CAS 1131992-22-7)
- 3-(1-Hydroxy-1-methylethyl)-4-methyl-2(1H)-pyridinone (CAS 2353871-44-8)
- N'-(1-phenyl-5-(1H-pyrrol-1-yl)-1H-pyrazole-4-carbonyl)benzenesulfonohydrazide (CAS 477709-83-4)
- 3-((Piperidin-1-yl)methyl)-1H-indole (CAS 5355-42-0)
- Boceprevir Impurity 4 (CAS CATO-C4X-25254)
- Ethyl 5-(4-chloro-2-fluorophenoxy)pentanoate (CAS 1443333-88-7)
- 2-Amino-5-methyl-5-phenyloxazol-4(5H)-one (CAS 51038-39-2)
- 3-Methyl-4-(pyrrolidin-1-yl)benzaldehyde (CAS 461033-80-7)
- Semaglutide Impurity 13 (CAS CATO-C4X-222613)
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