Description

Ethyl 4-Oxo-3,4-Dihydrothieno[3,2-D]Pyrimidine-2-Carboxylate is a high-purity heterocyclic building block of significant importance in advanced organic synthesis. This compound serves as a critical intermediate for the development of novel active pharmaceutical ingredients (APIs) and agrochemicals, enabling the construction of complex molecular architectures. It is primarily sought by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for its role in creating new therapeutic and crop protection agents.

Application

This versatile chemical intermediate is designed for high-value synthesis applications, including:

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel small molecule drugs, particularly those targeting kinase inhibition and other therapeutic pathways.
• Agrochemical Research: Used in the development of next-generation herbicides, fungicides, and insecticides with novel modes of action.
• Chemical Biology: Employed as a scaffold or building block for creating chemical probes and tool compounds to study biological processes.
• Material Science: Potential use in the synthesis of organic electronic materials and advanced polymers due to its fused heterocyclic structure.
• Contract Research & Manufacturing (CRO/CMO): Supplied to organizations engaged in custom synthesis and process development for clients.

Basic Information

Product Name	Ethyl 4-Oxo-3,4-Dihydrothieno[3,2-D]Pyrimidine-2-Carboxylate
CAS No.	319442-19-8
Molecular Formula	C9H8N2O3S
Molecular Weight	224.24 g/mol
Synonyms	Ethyl 4-oxo-3,4-dihydrothieno[3,2-d]pyrimidine-2-carboxylate; 2-Thiophenecarboxylic acid, 4,5-dihydro-4-oxothieno[3,2-d]pyrimidin-2-yl ethyl ester; Thieno[3,2-d]pyrimidine-2-carboxylic acid, 3,4-dihydro-4-oxo-, ethyl ester; Ethyl 4-oxo-3,4-dihydrothieno[3,2-d]pyrimidine-2-carboxylate; 319442-19-8; Ethyl 4-oxo-3,4-dihydrothieno[3,2-d]pyrimidine-2-carboxylate CAS 319442-19-8
EINECS	Contact for details

Quality Control

Our Ethyl 4-Oxo-3,4-Dihydrothieno[3,2-D]Pyrimidine-2-Carboxylate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing all critical quality attributes. Our commitment to quality supports compliance with cGMP and ISO standards where required for advanced intermediate applications.

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 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%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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