((2R,3S,5S)-3-((4-Methylbenzoyl)oxy)-5-(7-oxo-3,4-dihydro-1H-pyrimido[4,5-c][1,2]oxazin-6(7H)-yl)tetrahydrofuran-2-yl)methyl 4-methylbenzoate CAS 126128-41-4

Purity 97%+In StockPharmaceutical Standards
CAS No.126128-41-4
Molecular FormulaC27H27N3O7
Molecular Weight505.52 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

((2R,3S,5S)-3-((4-Methylbenzoyl)oxy)-5-(7-oxo-3,4-dihydro-1H-pyrimido[4,5-c][1,2]oxazin-6(7H)-yl)tetrahydrofuran-2-yl)methyl 4-methylbenzoate CAS 126128-41-4 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 ((2R,3S,5S)-3-((4-Methylbenzoyl)oxy)-5-(7-oxo-3,4-dihydro-1H-pyrimido[4,5-c][1,2]oxazin-6(7H)-yl)tetrahydrofuran-2-yl)methyl 4-methylbenzoate.

((2R,3S,5S)-3-((4-Methylbenzoyl)oxy)-5-(7-oxo-3,4-dihydro-1H-pyrimido[4,5-c][1,2]oxazin-6(7H)-yl)tetrahydrofuran-2-yl)methyl 4-methylbenzoate (CAS 126128-41-4), molecular formula C27H27N3O7 and molecular weight 505.52 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, ((2R,3S,5S)-3-((4-Methylbenzoyl)oxy)-5-(7-oxo-3,4-dihydro-1H-pyrimido[4,5-c][1,2]oxazin-6(7H)-yl)tetrahydrofuran-2-yl)methyl 4-methylbenzoate (C27H27N3O7) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 505.52 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).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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 FormulaC27H27N3O7
Molecular Weight505.52 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore in a cool place (≤25°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)16.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1993
Nitrogen Atoms3

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