N-(5-Chloro-2-methoxyphenyl)-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 1775524-06-5
| CAS No. | 1775524-06-5 |
| Molecular Formula | C20H20ClN5O5 |
| Molecular Weight | 445.86 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
N-(5-Chloro-2-methoxyphenyl)-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 1775524-06-5) is a high-purity analytical reference standard with the molecular formula C20H20ClN5O5 and a molecular weight of 445.86 g/mol.
Structurally, N-(5-Chloro-2-methoxyphenyl)-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 (C20H20ClN5O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 445.86 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), N-(5-Chloro-2-methoxyphenyl)-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 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 | C20H20ClN5O5 |
| Molecular Weight | 445.86 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
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Recommended Standards
- (E)-4-(4-chlorophenyl)-2-methyl-6-(2-(((4-nitrobenzyl)oxy)imino)ethyl)pyridine-3,5-dicarbonitrile (CAS 303148-08-5)
- 1-[2-(4-Chlorobenzoyl)-5-(trifluoromethyl)pyridin-3-yl]-4-phenylpiperazine (CAS 306977-50-4)
- Duvelisib (CAS CATO-C4X-29801)
- N-nitroso-duvelisib (CAS CATO-C4X-29802)
- (S)-2,2'-Bis[bis(4-methoxy-3,5-dimethylphenyl)phosphino]-4,4',6,6'-tetramethoxy)-1,1'-biphenyl (CAS 1365531-94-7)
- N-Benzyl-2-bromo-N-phenylpropanamide (CAS 93010-41-4)
- 6-O-Benzyl-2,3:4,5-di-O-cyclohexylidene-L-myo-inositol (CAS 129094-34-4)
- Hematin (CAS 15489-90-4)
- 2-Fluoro-4-isothiocyanatopyridine (CAS 1301254-81-8)
- Ethyl 4-methylthiazole-2-carboxylate (CAS 7210-73-3)
- (4-Aminophenyl)arsonous acid (CAS 2415254-21-4)
- 3-Methyl-N-(triphenylphosphoranylidene)pyridin-2-amine (CAS 136152-40-4)
- Progesterone Impurity 96 (CAS CATO-C4X-150296)
- Semaglutide（sodium salt） (CAS CATO-C4X-222619)
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