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-fluoro-4-methylphenyl)acetamide CAS 1775502-61-8
| CAS No. | 1775502-61-8 |
| Molecular Formula | C21H22FN5O4 |
| Molecular Weight | 427.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 427.43 g/mol gives 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-fluoro-4-methylphenyl)acetamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 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-fluoro-4-methylphenyl)acetamide (CAS 1775502-61-8), a certified reference material (molecular formula C21H22FN5O4, MW 427.43 g/mol) for analytical method development and quality control.
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-fluoro-4-methylphenyl)acetamide (C21H22FN5O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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-(3-fluoro-4-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 | C21H22FN5O4 |
| Molecular Weight | 427.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | F-containing |
| 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,9H-pyrimido[1,6-a]azepin-2-yl]-N-(4-fluorophenyl)acetamide (CAS 1775338-08-3)
- 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-fluorophenyl)methyl]acetamide (CAS 1775533-43-1)
- 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-fluorophenyl)acetamide (CAS 1775554-40-9)
- 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)acetamide (CAS 1775485-73-8)
- 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-(2-methoxyphenyl)acetamide (CAS 1775541-81-5)
- 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-[(thiophen-2-yl)methyl]acetamide (CAS 1775353-96-2)
- 1-(8-(1,3,4-Oxadiazol-2-yl)-2,4-bis(trifluoromethyl)imidazo[1,2-a][1,8]naphthyridin-5-yl)-N,N-dimethylmethanamine (CAS 1431424-64-4)
- 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-methylphenyl)methyl]acetamide (CAS 1775308-53-6)
Recommended Standards
- N-(3-Fluoro-4-methylphenyl)-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 1775354-41-0)
- (4-Phenylpiperazin-1-yl)(4-((5-(trifluoromethyl)pyridin-2-yl)oxy)phenyl)methanone (CAS 866154-39-4)
- N-[(4-Fluorophenyl)methyl]-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 1775554-63-6)
- (2E)-1,2-Bis(4-methoxyphenyl)-3-{[4-(trifluoromethyl)phenyl]amino}prop-2-en-1-one (CAS 692287-94-8)
- 2,5-Diamino-4h,7h-[1,2,4]triazolo[1,5-a]pyrimidin-7-one (CAS 89323-33-1)
- (8-(Tert-butyl)-1-oxa-4-azaspiro[4.5]Decane-3,3-diyl)dimethanol (CAS 288860-35-5)
- 2-Chloro-4-(difluoromethyl)-6-iodo-3-(trifluoromethyl)pyridine (CAS 1805063-55-1)
- Phenethyl 2-(oxazol-4-yl)acetate (CAS 84446-03-7)
- Piritrexim (CAS 72732-56-0)
- 12-Bromododecane-1-thiol (CAS 176109-91-4)
- 1-(1-Methyl-5-nitro-1H-benzo[d]imidazol-2-yl)ethan-1-ol (CAS 2735-71-9)
- 3-(5-methyl-1,3,4-oxadiazol-2-yl)morpholine, trifluoroacetic acid (CAS 1803592-65-5)
- 2,2,2-Trifluoroethyl (2,4-dimethoxyphenyl)carbamate (CAS 1087788-85-9)
- Semaglutide impurity 99 (CAS CATO-C4X-222699)
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