Description

1H-Thieno[2,3-D][1,3]Oxazine-2,4-Dione is a high-value heterocyclic organic compound, specifically a fused thieno-oxazine dione, serving as a critical advanced intermediate in modern synthetic chemistry. Its unique bicyclic structure makes it an essential building block for the development of novel active pharmaceutical ingredients (APIs) and specialty agrochemicals. This compound is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and advanced material sectors for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key synthon in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and anti-infective agents.
• Agrochemical Synthesis: Used in the research and development of next-generation herbicides and fungicides, leveraging its heterocyclic core for bioactivity.
• Organic Light-Emitting Diode (OLED) Materials: Serves as a precursor for electron-transport or host materials in OLED device fabrication due to its electron-deficient character.
• Dye & Pigment Chemistry: Acts as a building block for synthesizing specialized heterocyclic dyes and functional pigments.
• Academic & Industrial Research: A valuable reagent for methodological studies in organic synthesis, including cyclization and ring-opening reactions.
• Coordination Chemistry Ligand Precursor: Its structure can be modified to create novel chelating ligands for metal catalysis.

Basic Information

Product Name	1H-Thieno[2,3-D][1,3]Oxazine-2,4-Dione
CAS No.	103979-54-0
Molecular Formula	C6H3NO3S
Molecular Weight	169.16 g/mol
Synonyms	Thieno[2,3-d][1,3]oxazine-2,4(1H,3H)-dione; 1H-Thieno[2,3-d]-1,3-oxazine-2,4-dione; 2,4-Dioxo-1,3-thieno[2,3-d]oxazine; Thieno[2,3-d]oxazine-2,4-dione; 1H-Thieno[2,3-d][1,3]oxazine-2,4-dione; 103979-54-0; Thieno-oxazine dione
EINECS	Contact for details

Quality Control

Our 1H-Thieno[2,3-D][1,3]Oxazine-2,4-Dione is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, NMR and IR for structural confirmation, and residual solvent analysis, to ensure it meets the high standards required for research and process chemistry. Certificates of Analysis (COA) with detailed chromatographic data are provided for every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). The compound may be moisture-sensitive; keep the container tightly sealed under an inert atmosphere for long-term storage to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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