4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-[(3-methylphenyl)methyl]-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione CAS 1775345-57-7

Purity 97%+In StockPharmaceutical Standards
CAS No.1775345-57-7
Molecular FormulaC20H22N4O3
Molecular Weight366.41 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-[(3-methylphenyl)methyl]-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione CAS 1775345-57-7 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 366.41 g/mol gives 4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-[(3-methylphenyl)methyl]-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-[(3-methylphenyl)methyl]-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione (CAS 1775345-57-7), a certified reference material (molecular formula C20H22N4O3, MW 366.41 g/mol) for analytical method development and quality control.

Structurally, 4-(5-Ethyl-1,2,4-oxadiazol-3-yl)-2-[(3-methylphenyl)methyl]-1H,2H,3H,5H,6H,7H,8H-pyrido[1,2-c]pyrimidine-1,3-dione (C20H22N4O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 366.41 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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 FormulaC20H22N4O3
Molecular Weight366.41 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1994
Nitrogen Atoms4

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