Description

2H-Thieno[3,2-B]-1,4-Oxazin-3(4H)-One is a high-purity heterocyclic organic compound, identified by CAS No. 211948-60-6, that serves as a critical advanced intermediate in modern synthetic chemistry. Its unique fused-ring structure containing sulfur, oxygen, and nitrogen makes it a valuable building block for constructing complex molecules with specific electronic and steric properties. This compound is primarily utilized by research institutions and pharmaceutical companies engaged in the development of novel active pharmaceutical ingredients (APIs) and agrochemicals.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly in therapeutic areas requiring complex heterocyclic scaffolds.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides, leveraging its unique thieno-oxazine core.
• Material Science: Serves as a monomer or building block for creating specialized polymers and organic electronic materials.
• Academic & R&D: Employed in synthetic methodology research and as a standard for analytical method development in organic chemistry laboratories.
• Fine Chemical Synthesis: Acts as a versatile intermediate for producing dyes, pigments, and other high-value specialty chemicals.

Basic Information

Product Name	2H-Thieno[3,2-B]-1,4-Oxazin-3(4H)-One
CAS No.	211948-60-6
Molecular Formula	C6H5NO2S
Molecular Weight	155.17 g/mol
Synonyms	2H-Thieno[3,2-b]-1,4-oxazin-3(4H)-one; Thieno[3,2-b][1,4]oxazin-3(4H)-one; 4H-Thieno[3,2-b][1,4]oxazin-3-one; 211948-60-6; Thienooxazinone; 3-Oxo-3,4-dihydro-2H-thieno[3,2-b][1,4]oxazine
EINECS	Contact for details

Quality Control

Our 2H-Thieno[3,2-B]-1,4-Oxazin-3(4H)-One is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with every shipment, confirming compliance with customer specifications and industry best practices for advanced intermediates.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents. For long-term storage, consider an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.