N-(2-Ethylphenyl)-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 1775336-96-3
| CAS No. | 1775336-96-3 |
| Molecular Formula | C21H23N5O4 |
| Molecular Weight | 409.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 409.44 g/mol gives N-(2-Ethylphenyl)-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 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
N-(2-Ethylphenyl)-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 1775336-96-3), molecular formula C21H23N5O4 and molecular weight 409.44 g/mol, is a CATO reference standard with documented purity and traceability.
N-(2-Ethylphenyl)-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 (C21H23N5O4) 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. 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.
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 | C21H23N5O4 |
| Molecular Weight | 409.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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 N Standards
- N-(4-Ethylphenyl)-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 1775402-70-4)
- 3-(4-Ethylphenyl)-N-(4-methoxybenzyl)-3-(2,2,2-trifluoroacetamido)propanamide (CAS 439107-53-6)
- 1-((12-(4-Ethylphenyl)dodecyl)oxy)-2-nitrobenzene (CAS 155056-63-6)
- N-(4-ethylphenyl)-2-(5-(morpholinosulfonyl)-2-oxopyridin-1(2H)-yl)acetamide (CAS 1251660-67-9)
- N-(4-ethylphenyl)-2-(1,4-dioxa-8-azaspiro[4.5]Decan-8-yl)pyridine-3-sulfonamide (CAS 1251591-68-0)
- 1'-(2-Ethylphenyl)-5-isopropyl-1',7'-dihydrospiro[indoline-3,4'-pyrazolo[3,4-b]pyridine]-2,6'(5'H)-dione (CAS 1172920-29-4)
- N-(2-Ethylphenyl)-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]acetamide (CAS 1775310-01-4)
- N-(4-Ethylphenyl)-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]acetamide (CAS 1775354-06-7)
Recommended Standards
- N-(2,5-Dimethylphenyl)-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 1775308-37-6)
- 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-(4-methylphenyl)acetamide (CAS 1775338-17-4)
- 4,5-Bis((4-methoxybenzyl)oxy)picolinohydrazide (CAS 161188-00-7)
- N-Benzyl-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]acetamide (CAS 1775345-47-5)
- Methyl N-(tert-butoxycarbonyl)-N-ethylglycinate (CAS 1249016-05-4)
- tert-Butyl 1H-azepin-4-ylcarbamate (CAS 1206675-14-0)
- Ez,z)-2-(2-benzyloxycarbonylamino-4-thiazol)-4-(3-methyl-2-butenyloxycarbonyl)-2-butenoicacid (CAS 155657-19-5)
- 1-Chloro-4-(4-fluorophenyl)phthalazine, 97% (CAS 155937-28-3)
- 2-Methyl-3-oxo-2,3-dihydro-1H-isoindole-1-carboxylic acid (CAS 1350468-65-3)
- 2,4-Dichloro-5-trifluoromethylpyrimidine 2,4-dichloro-5-(trifluoromethyl)-pyrimidine 5-trifluoromethyl-2,4-dichloropyrimidine 2,4-dichloro-5-trifluoromethyl-pyrimidine 2,4-dichloro-5-(trifluoromethyl)pyrimidine 3932-97-6 (CAS 3932-97-6)
- Olsalazine EP Impurity E (CAS CATO-C4X-18015)
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