3-Methyl-3,4-dihydro-2H-pyrimido[4,5-e][1,3]oxazine-6,8(5H,7H)-dione CAS 5753-17-3

Purity 97%+In StockPharmaceutical Standards
CAS No.5753-17-3
Molecular FormulaC7H9N3O3
Molecular Weight183.16 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Methyl-3,4-dihydro-2H-pyrimido[4,5-e][1,3]oxazine-6,8(5H,7H)-dione CAS 5753-17-3 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.

3-Methyl-3,4-dihydro-2H-pyrimido[4,5-e][1,3]oxazine-6,8(5H,7H)-dione (CAS 5753-17-3) is a high-purity analytical reference standard with the molecular formula C7H9N3O3 and a molecular weight of 183.16 g/mol.

Structurally, 3-Methyl-3,4-dihydro-2H-pyrimido[4,5-e][1,3]oxazine-6,8(5H,7H)-dione (C7H9N3O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 183.16 g/mol, it falls into the medium-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).

CATO manufactures 3-Methyl-3,4-dihydro-2H-pyrimido[4,5-e][1,3]oxazine-6,8(5H,7H)-dione under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC7H9N3O3
Molecular Weight183.16 g/mol
AppearanceOff-white to pale yellow crystalline powder. (faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1958
Nitrogen Atoms3

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