N-(2-Chlorophenyl)-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 1775554-16-9
| CAS No. | 1775554-16-9 |
| Molecular Formula | C20H20ClN5O4 |
| Molecular Weight | 429.86 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C20H20ClN5O4, N-(2-Chlorophenyl)-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 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 429.86 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies N-(2-Chlorophenyl)-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 1775554-16-9), a certified reference material (molecular formula C20H20ClN5O4, MW 429.86 g/mol) for analytical method development and quality control.
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.
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 | C20H20ClN5O4 |
| Molecular Weight | 429.86 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 | Cl-containing |
| Nitrogen Atoms | 5 |
Related N Standards
- N-(3-Chlorophenyl)-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 1775338-32-3)
- N-(4-Chlorophenyl)-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 1775351-40-0)
- N-(2-Chlorophenyl)-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 1775403-62-7)
- N-[(2-Chlorophenyl)methyl]-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 1775503-23-5)
- N-{[(4-chlorophenyl)carbamoyl]amino}-2-[1-(4-nitrophenyl)piperidin-4-ylidene]acetamide (CAS 251310-54-0)
- Methyl 4-[(2-{[(4-chlorophenyl)carbamoyl]amino}-4-(trifluoromethyl)phenyl)amino]butanoate (CAS 339101-65-4)
- N-(3-(4-Chlorophenyl)allyl)-N-(2-(isoquinoline-5-sulfonamido)ethyl)formamide (CAS 130964-32-8)
- 1-((2-Chlorophenyl)sulfonyl)-4-((4-methoxyphenyl)sulfonyl)piperidine (CAS 1448137-02-7)
Recommended Standards
- N-(2-Chloro-4-methylphenyl)-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 1775503-47-3)
- Zeteletinib Impurity 1 (CAS CATO-C4X-32161)
- 1-(2-Chloro-5-fluorobenzoyl)-4-{[3-(4-methoxyphenyl)-1,2,4-oxadiazol-5-yl]methyl}piperidine (CAS 1775304-87-4)
- 1-(2-Chloro-4-fluorobenzoyl)-4-{[3-(4-methoxyphenyl)-1,2,4-oxadiazol-5-yl]methyl}piperidine (CAS 1775482-26-2)
- 2-(4'-Chloro-[1,1'-biphenyl]-3-yl)aceticacid (CAS 75852-50-5)
- Diethyl 1-(4-fluorobenzyl)-1H-pyrazole-3,5-dicarboxylate (CAS 251925-08-3)
- ((2S,3S)-4-(tert-butoxy)-3-(tert-butyl)-2,3-dihydrobenzo[d][1,3]oxaphosphol-2-yl )di-tert-butylphosphineoxide (CAS 2374143-33-4)
- 4-Chloro-2-(2-chlorobenzo[4,5]imidazo[1,2-c]quinazolin-6-yl)aniline (CAS 10173-68-9)
- (1S)-6-methoxy-2,3-dihydro-1H-inden-1-ol (CAS 200425-75-8)
- N-(2-fluoro-4-hydroxyphenyl)-2-(methylthio)acetamide (CAS 1340274-94-3)
- benzyl (3R,4R)-4-azido-3-fluoro-piperidine-1-carboxylate (CAS 1932616-65-3)
- 4-((4-Iodo-2-methylphenyl)amino)-4-oxobutanoic acid (CAS 951905-87-6)
- H-D-HoTyr-OH·Hydrobromide (CAS 185617-14-5)
- Semaglutide impurity 289 (CAS CATO-C4X-2226289)
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