Description

3-Methylthieno(2,3-D)Pyrimidin-4(5H)-One is a high-value heterocyclic building block and key synthetic intermediate in advanced organic chemistry. This compound matters for its crucial role in the development of novel pharmacologically active molecules, particularly within medicinal chemistry research. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of kinase inhibitors and other targeted therapeutic agents.
• Agrochemical Research: Used as a core scaffold for developing new fungicides and herbicides with novel modes of action.
• Material Science: Serves as a building block for organic electronic materials and advanced polymers.
• Chemical Biology: Employed in the design and synthesis of molecular probes and enzyme inhibitors for biological studies.
• Process Chemistry: Utilized in route scouting and optimization for the commercial-scale production of active pharmaceutical ingredients (APIs).
• Academic Research: A valuable reagent for methodological development and exploring new heterocyclic chemistry in university and institutional labs.

Basic Information

Product Name	3-Methylthieno(2,3-D)Pyrimidin-4(5H)-One
CAS No.	43088-64-8
Molecular Formula	C7H6N2OS
Molecular Weight	166.20 g/mol
Synonyms	3-Methyl-4H-thieno[2,3-d]pyrimidin-4-one; 3-Methylthieno[2,3-d]pyrimidin-4(3H)-one; 3-Methyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine; 4H-Thieno[2,3-d]pyrimidin-4-one, 3-methyl-; 43088-64-8; 3-Methylthienopyrimidinone; 3-Methyl-4H-thienopyrimidin-4-one
EINECS	Contact for details

Quality Control

Our 3-Methylthieno(2,3-D)Pyrimidin-4(5H)-One is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity for research and development applications. We provide comprehensive analytical data, including HPLC purity, NMR, and mass spectrometry confirmation. Certificates of Analysis (COA) are available for every batch upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Purity (HPLC)	≥ 97.0%
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.