2-[4-(5-Methyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidin-2-yl]-N-(3-methylphenyl)acetamide CAS 1775553-93-9
| CAS No. | 1775553-93-9 |
| Molecular Formula | C20H21N5O4 |
| Molecular Weight | 395.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-[4-(5-Methyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidin-2-yl]-N-(3-methylphenyl)acetamide (C20H21N5O4) contains a flavonoid core, 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.
2-[4-(5-Methyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidin-2-yl]-N-(3-methylphenyl)acetamide (CAS 1775553-93-9), molecular formula C20H21N5O4 and molecular weight 395.41 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2-[4-(5-Methyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidin-2-yl]-N-(3-methylphenyl)acetamide 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 | C20H21N5O4 |
| Molecular Weight | 395.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Nitrogen Atoms | 5 |
Related Methyl Standards
- 2-[4-(5-Methyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H,9H-pyrimido[1,6-a]azepin-2-yl]-N-phenylacetamide (CAS 1775444-58-0)
- 2-((5-Benzyl-1,3,4-oxadiazol-2-yl)thio)-N-(3,5-dichlorophenyl)acetamide (CAS 336174-33-5)
- 1-((5-Phenyl-1,2,4-oxadiazol-3-yl)methyl)-5-(3-(pyridin-4-yl)-1,2,4-oxadiazol-5-yl)pyridin-2(1H)-one (CAS 1396858-58-4)
- 2-[4-(5-Methyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H,9H-pyrimido[1,6-a]azepin-2-yl]-N-(5-methyl-1,2-oxazol-3-yl)acetamide (CAS 1775346-41-2)
- 2-[4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidin-2-yl]-N-(5-methyl-1,2-oxazol-3-yl)acetamide (CAS 1775420-90-0)
- 4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-[(3-fluoro-4-methoxyphenyl)methyl]-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione (CAS 1775484-66-6)
- 4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-[2-(4-fluorophenoxy)ethyl]-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione (CAS 1775558-16-1)
- 2-((5-Benzyl-1,3,4-oxadiazol-2-yl)thio)-N-(4-bromophenyl)acetamide (CAS 220597-89-7)
Recommended Standards
- N-Benzyl-2-[4-(5-methyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidin-2-yl]acetamide (CAS 1775553-83-7)
- (R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-(allyloxy)-4-oxobutanoic acid (CAS 177609-12-0)
- 4-(Hydroxyamino)thiazol-2(5H)-one (CAS 19387-59-8)
- Z-Trp-Gly-OH (C-2700.0001) (CAS 17388-70-4)
- 1838-13-7 InChI=1/C2H8BN/c1-4(2)3/h3H2,1-2H3 SDWBRBLWPQDUQP-UHFFFAOYSA- (CAS 1838-13-7)
- LY 303511 (CAS 154447-38-8)
- 1-Amino-2,3-dimethylpentan-3-ol (CAS 1505677-42-8)
- tert-Butyl (S)-2-((S)-1-hydroxyethyl)-2-methylpyrrolidine-1-carboxylate (CAS 2852769-92-5)
- 4-[(4-Trifluoromethyl)phenyl]-1-butene (CAS 113170-92-6)
- 2-Amino-4-bromo-6-methylbenzonitrile (CAS 1609964-29-5)
- Tucatinib (CAS 937263-43-9)
- 3-Chloro-4-fluorobiphenyl-3-amine (CAS 1226001-94-0)
- 2-Amino-4-cyclopropoxy-N-methylnicotinamide (CAS 1243281-95-9)
- Semaglutide Impurity 130 (CAS 1188328-40-6)
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