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-[(thiophen-2-yl)methyl]acetamide CAS 1775336-45-2
| CAS No. | 1775336-45-2 |
| Molecular Formula | C19H21N5O4S |
| Molecular Weight | 415.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 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-[(thiophen-2-yl)methyl]acetamide.
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-[(thiophen-2-yl)methyl]acetamide (CAS 1775336-45-2), molecular formula C19H21N5O4S and molecular weight 415.47 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 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-[(thiophen-2-yl)methyl]acetamide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 415.47 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 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-[(thiophen-2-yl)methyl]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 | C19H21N5O4S |
| Molecular Weight | 415.47 g/mol |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Ethyl 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-[(thiophen-2-yl)methyl]acetamide (CAS 1775338-51-6)
- 2-((5-Phenyl-1,3,4-oxadiazol-2-yl)thio)-N-(2,4,6-trichlorophenyl)acetamide (CAS 333777-94-9)
- 4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-[3-(4-fluorophenoxy)propyl]-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione (CAS 1775345-18-0)
- 1-((5-Benzyl-1,2,4-oxadiazol-3-yl)methyl)-5-(3-(thiophen-3-yl)-1,2,4-oxadiazol-5-yl)pyridin-2(1H)-one (CAS 1396761-12-8)
- 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-fluorophenyl)acetamide (CAS 1775404-17-5)
- 4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-{[3-(trifluoromethyl)phenyl]methyl}-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione (CAS 1775402-65-7)
- 4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-{[4-(trifluoromethyl)phenyl]methyl}-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione (CAS 1775553-79-1)
- 4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-({4-oxo-4H-pyrido[1,2-a]pyrimidin-2-yl}methyl)-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione (CAS 1775353-81-5)
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