2h,3h,4h-Pyrido[4,3-b][1,4]thiazin-3-one CAS 18504-86-4

Purity 97%+In StockPharmaceutical Standards
CAS No.18504-86-4
Molecular FormulaC7H6N2OS
Molecular Weight166.20 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2h,3h,4h-Pyrido[4,3-b][1,4]thiazin-3-one CAS 18504-86-4 chemical structure

Description

Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system, 2h,3h,4h-Pyrido[4,3-b][1,4]thiazin-3-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 166.20 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

2h,3h,4h-Pyrido[4,3-b][1,4]thiazin-3-one (CAS 18504-86-4) is a high-purity analytical reference standard with the molecular formula C7H6N2OS and a molecular weight of 166.20 g/mol.

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.

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 FormulaC7H6N2OS
Molecular Weight166.20 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962
Nitrogen Atoms2
Sulfur Atoms1

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