Description

3-Amino-2-Methylthieno[2,3-D]Pyrimidin-4(3H)-One is a high-value heterocyclic building block and pharmaceutical intermediate of significant interest in modern organic synthesis. Its fused thienopyrimidine core structure makes it a critical precursor for developing novel bioactive compounds, particularly in medicinal chemistry. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced material sectors seeking to create innovative small-molecule libraries and active ingredients.

Application

• Pharmaceutical Intermediate: Serves as a key scaffold for the synthesis of potential kinase inhibitors, anticancer agents, and other therapeutic molecules targeting various disease pathways.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and pesticides, leveraging its heterocyclic structure for biological activity.
• Chemical Biology & Proteomics: Employed as a building block for creating chemical probes and tool compounds to study enzyme function and biological processes.
• Material Science: Investigated as a precursor for organic electronic materials, such as semiconductors or light-emitting components, due to its electron-rich fused ring system.
• Academic & Contract Research: Utilized in university and CRO laboratories for method development, heterocyclic chemistry studies, and exploratory synthesis projects.

Basic Information

Product Name	3-Amino-2-Methylthieno[2,3-D]Pyrimidin-4(3H)-One
CAS No.	852399-99-6
Molecular Formula	C7H7N3OS
Molecular Weight	181.21 g/mol
Synonyms	3-Amino-2-methyl-4H-thieno[2,3-d]pyrimidin-4-one; 2-Methyl-3-aminothieno[2,3-d]pyrimidin-4(3H)-one; 4(3H)-Thieno[2,3-d]pyrimidinone, 3-amino-2-methyl-; 3-Amino-2-methylthieno[2,3-d]pyrimidin-4-one; Thieno[2,3-d]pyrimidine-4(3H)-one, 3-amino-2-methyl-
EINECS	Contact for details

Quality Control

Our 3-Amino-2-Methylthieno[2,3-D]Pyrimidin-4(3H)-One is manufactured under strict quality management protocols to ensure batch-to-batch consistency and high purity. We provide comprehensive analytical documentation, including Certificates of Analysis (COA) with detailed HPLC/GC purity data, identity confirmation (IR, NMR), and impurity profiles. Our quality systems are designed to support cGMP and ISO standards for advanced intermediates, ensuring reliability for your critical research and development pipelines.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep the container tightly sealed in a dry environment to maintain stability.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm

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