7-Oxo-7,8-dihydro-6H-pyrimido[5,4-β][1,4]oxazine-2-carboxaldehyde CAS 1003946-48-2

Purity 97%+In StockPharmaceutical Standards
CAS No.1003946-48-2
Molecular FormulaC7H5N3O3
Molecular Weight179.13 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

7-Oxo-7,8-dihydro-6H-pyrimido[5,4-β][1,4]oxazine-2-carboxaldehyde CAS 1003946-48-2 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 7-Oxo-7,8-dihydro-6H-pyrimido[5,4-β][1,4]oxazine-2-carboxaldehyde.

7-Oxo-7,8-dihydro-6H-pyrimido[5,4-β][1,4]oxazine-2-carboxaldehyde (CAS 1003946-48-2), molecular formula C7H5N3O3 and molecular weight 179.13 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C7H5N3O3, 7-Oxo-7,8-dihydro-6H-pyrimido[5,4-β][1,4]oxazine-2-carboxaldehyde contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 179.13 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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

As a certified reference material (CRM), 7-Oxo-7,8-dihydro-6H-pyrimido[5,4-β][1,4]oxazine-2-carboxaldehyde 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 FormulaC7H5N3O3
Molecular Weight179.13 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)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1988
Nitrogen Atoms3

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