Methyl 4-oxo-4H-pyrimido[1,2-a]pyrimidine-2-carboxylate CAS 118450-85-4
| CAS No. | 118450-85-4 |
| Molecular Formula | C9H7N3O3 |
| Molecular Weight | 205.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Methyl 4-oxo-4H-pyrimido[1,2-a]pyrimidine-2-carboxylate (CAS 118450-85-4), a certified reference material (molecular formula C9H7N3O3, MW 205.17 g/mol) for analytical method development and quality control.
The molecular framework of Methyl 4-oxo-4H-pyrimido[1,2-a]pyrimidine-2-carboxylate (C9H7N3O3) 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.
As a certified reference material (CRM), Methyl 4-oxo-4H-pyrimido[1,2-a]pyrimidine-2-carboxylate 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 | C9H7N3O3 |
| Molecular Weight | 205.17 g/mol |
| Appearance | Pale yellow to 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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
Recommended Standards
- Methyl 2-oxo-2H-pyrimido[1,2-b]pyridazine-4-carboxylate (CAS 118450-81-0)
- 3-(4-Nitro-phenyl)-isoxazol-5-ylamine (CAS 119162-48-0)
- 1H-Indole-2,5-dicarboxylic acid (CAS 117140-77-9)
- Methyl 3-ethynyl-5-nitrobenzoate (CAS 1192472-44-8)
- Methyl 6-ethynyl-2-naphthoate (CAS 1180526-20-8)
- 2-(4-Methyl-6-oxo-1,6-dihydropyridin-3-yl)pyrrolidine-1-carbaldehyde (CAS 1352513-66-6)
- 2-Bromo-1-(1H-indol-3-yl)ethan-1-one (CAS 19611-93-9)
- 3-(4-Bromophenyl)-1-(3-chloro-4-fluorophenyl)-1H-pyrazole-5-carboxylic acid (CAS 618102-64-0)
- 1-Methyl-2-[(E)-2-[4-(methylsulfanyl)phenyl]ethenyl]pyridin-1-ium iodide (CAS 1047974-85-5)
- 1-[(3-bromophenyl)methyl]-3,5-dimethyl-1H-pyrazole-4-carboxylic acid (CAS 1153371-57-3)
- Tert-butyl (1-acetyl-3,3-dimethylcyclobutyl)carbamate (CAS 2303004-06-8)
- (4-Benzylpiperazin-1-yl)(4-(2-methylbenzoyl)-1H-pyrrol-2-yl)methanone (CAS 478249-51-3)
- Valeryl Chloride (CAS 638-29-9)
- Semaglutide impurity 197 (CAS CATO-C4X-2226197)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com