Description

4H-Thieno[2,3-D][1,3]Oxazin-4-One,2-Ethyl-5,6-Dimethyl-(9Ci) is a high-purity heterocyclic organic compound with the CAS number 433716-48-4, serving as a critical advanced intermediate in modern synthetic chemistry. Its unique fused-ring structure makes it a valuable building block for the development of novel active pharmaceutical ingredients (APIs) and functional materials. This compound is primarily targeted at research and development teams in the pharmaceutical, agrochemical, and specialty chemical industries seeking to innovate new molecular entities.

Application

• As a key synthetic intermediate in the research and development of novel pharmaceutical compounds.
• Utilized in the synthesis of complex heterocyclic scaffolds for drug discovery programs, particularly in central nervous system (CNS) and oncology targets.
• Serves as a precursor in agrochemical research for developing new active ingredients with enhanced efficacy.
• Used in material science for creating organic electronic materials and advanced polymers.
• Acts as a building block in academic and industrial research for exploring new chemical reactions and methodologies.
• Potential use in the synthesis of dyes, pigments, and photoactive materials due to its conjugated system.

Basic Information

Item	Details
Product Name	4H-Thieno[2,3-D][1,3]Oxazin-4-One,2-Ethyl-5,6-Dimethyl-(9Ci)
CAS No.	433716-48-4
Molecular Formula	C10H12N2O2S
Molecular Weight	224.28 g/mol
Synonyms	2-Ethyl-5,6-dimethyl-4H-thieno[2,3-d][1,3]oxazin-4-one; 4H-Thieno[2,3-d][1,3]oxazin-4-one, 2-ethyl-5,6-dimethyl-; 433716-48-4; 2-Ethyl-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-one (related structure); Thieno[2,3-d]oxazine derivative; 2-Ethyl-5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine
EINECS	Contact for details

Quality Control

Every batch of 4H-Thieno[2,3-D][1,3]Oxazin-4-One,2-Ethyl-5,6-Dimethyl-(9Ci) is manufactured under a strict quality management system. We employ advanced analytical techniques including HPLC, GC, NMR, and MS to ensure identity, purity, and consistency meet the exacting standards required for research and development. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (typically 15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider storing under an inert atmosphere to maintain optimal purity.

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%
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.