7-Methyl-N-(3-methylpyridin-2-yl)-6-oxo-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3]thiazine-3-carboxamide CAS 1396635-68-9

Purity 97%+In StockPharmaceutical Standards
CAS No.1396635-68-9
Molecular FormulaC15H16N4O2S
Molecular Weight316.38 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

7-Methyl-N-(3-methylpyridin-2-yl)-6-oxo-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3]thiazine-3-carboxamide CAS 1396635-68-9 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-Methyl-N-(3-methylpyridin-2-yl)-6-oxo-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3]thiazine-3-carboxamide.

7-Methyl-N-(3-methylpyridin-2-yl)-6-oxo-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3]thiazine-3-carboxamide (CAS 1396635-68-9), molecular formula C15H16N4O2S and molecular weight 316.38 g/mol, is a CATO reference standard with documented purity and traceability.

7-Methyl-N-(3-methylpyridin-2-yl)-6-oxo-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3]thiazine-3-carboxamide (C15H16N4O2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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.

As a certified reference material (CRM), 7-Methyl-N-(3-methylpyridin-2-yl)-6-oxo-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3]thiazine-3-carboxamide 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 FormulaC15H16N4O2S
Molecular Weight316.38 g/mol
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)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1991
Nitrogen Atoms4
Sulfur Atoms1

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