N-Cyclopropyl-7-methyl-6-oxo-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3]thiazine-3-carboxamide CAS 1396858-79-9

Purity 97%+In StockPharmaceutical Standards
CAS No.1396858-79-9
Molecular FormulaC12H15N3O2S
Molecular Weight265.33 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

N-Cyclopropyl-7-methyl-6-oxo-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3]thiazine-3-carboxamide CAS 1396858-79-9 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.

N-Cyclopropyl-7-methyl-6-oxo-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3]thiazine-3-carboxamide (CAS 1396858-79-9), molecular formula C12H15N3O2S and molecular weight 265.33 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of N-Cyclopropyl-7-methyl-6-oxo-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3]thiazine-3-carboxamide (C12H15N3O2S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

As a certified reference material (CRM), N-Cyclopropyl-7-methyl-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 FormulaC12H15N3O2S
Molecular Weight265.33 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)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1991
Nitrogen Atoms3
Sulfur Atoms1

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