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-(2-methoxy-5-methylphenyl)acetamide CAS 1775554-74-9
| CAS No. | 1775554-74-9 |
| Molecular Formula | C22H25N5O5 |
| Molecular Weight | 439.46 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.
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-(2-methoxy-5-methylphenyl)acetamide (CAS 1775554-74-9), molecular formula C22H25N5O5 and molecular weight 439.46 g/mol, is a CATO reference standard with documented purity and traceability.
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-(2-methoxy-5-methylphenyl)acetamide (C22H25N5O5) 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.
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 | C22H25N5O5 |
| Molecular Weight | 439.46 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 Ethyl Standards
- 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-[(4-methoxyphenyl)methyl]acetamide (CAS 1775308-30-9)
- 2-[4-(5-Ethyl-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-(3-methoxyphenyl)acetamide (CAS 1775386-91-8)
- 2-[4-(5-Ethyl-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-(2-methoxyphenyl)acetamide (CAS 1775402-99-7)
- 2-[4-(5-Ethyl-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-methoxyphenyl)acetamide (CAS 1775454-86-8)
- 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-[(3-methoxyphenyl)methyl]acetamide (CAS 1775553-51-9)
- 1-(3-(3-Phenyl-1,2,4-oxadiazol-5-yl)pyridin-2-yl)-N-(pyridin-3-ylmethyl)piperidine-4-carboxamide (CAS 1251674-31-3)
- 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-[3-(propan-2-yl)phenyl]acetamide (CAS 1775338-53-8)
- 2-[4-(5-Ethyl-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-(2-ethylphenyl)acetamide (CAS 1775353-89-3)
Recommended Standards
- 1-(3-(((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)methyl)phenyl)-1H-pyrazole-3-carboxylic acid (CAS 2138248-12-9)
- 2,6-Difluoro-N-((3-(naphthalen-2-yl)-1-phenyl-1H-pyrazol-4-yl)methyl)benzamide (CAS 956781-80-9)
- 3-((2-Fluorophenyl)amino)-2-(4-(3-oxo-3H-benzo[f]chromen-2-yl)thiazol-2-yl)acrylonitrile (CAS 374085-30-0)
- 4,4,6-Trimethyl-1,2-dioxo-1,2,5,6-tetrahydro-4H-pyrrolo[3,2,1-ij]quinolin-8-yl 3,4,5-trimethoxybenzoate (CAS 700849-66-7)
- (2-((4-Ethylpiperazin-1-yl)methyl)-5-fluorophenyl)boronic acid (CAS 1312765-78-8)
- 1-(2-Methoxyphenyl)-3-(piperidin-4-yl)urea hydrochloride (CAS 1233955-43-5)
- 2-(1-Ethyl-1H-imidazol-4-yl)ethanamine dihydrochloride (CAS 1023299-78-6)
- Bempedoic Acid Impurity 3 (CAS 50592-83-1)
- 6-(P-tolyl)nicotinic acid (CAS 521074-77-1)
- 3-(1-Ethyl-1,2,3,6-tetrahydropyridin-4-yl)-1H-indole-6-carbonitrile (CAS 1958106-12-1)
- 2-Ethyl-4-methylpyridin-3-amine (CAS 1849224-21-0)
- Methyl 4-((5-(m-tolylcarbamoyl)-1,3,4-thiadiazol-2-yl)methoxy)benzoate (CAS 1142210-19-2)
- trans-2-(3-Bromophenyl)cyclopropanecarboxylic Acid (CAS 34919-34-1)
- Semaglutide impurity 87 (CAS CATO-C4X-222687)
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