Description

3-Amino-5-Ethyl-2,6-Dimethylthieno[2,3-D]Pyrimidin-4(3H)-One is a high-purity, heterocyclic organic compound that serves as a critical building block in advanced chemical synthesis. Its unique fused thienopyrimidine core structure makes it a valuable intermediate for developing novel active pharmaceutical ingredients (APIs) and specialty agrochemicals. This compound is essential for research and production teams in the pharmaceutical, agrochemical, and fine chemical industries seeking to create new molecules with targeted biological activity.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of new drug candidates, particularly for kinase inhibitors and other targeted therapies.
• Agrochemical Synthesis: Used as a core building block for creating novel herbicides, fungicides, and insecticides with enhanced efficacy.
• Material Science Research: Investigated as a precursor for organic electronic materials due to its electron-rich heterocyclic system.
• Chemical Biology Probes: Serves as a scaffold for developing molecular probes to study biological pathways and enzyme functions.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs and research institutions for bespoke synthesis projects requiring high-fidelity intermediates.

Basic Information

Product Name	3-Amino-5-Ethyl-2,6-Dimethylthieno[2,3-D]Pyrimidin-4(3H)-One
CAS No.	832740-48-4
Molecular Formula	C10H13N3OS
Molecular Weight	223.29 g/mol
Synonyms	3-Amino-5-ethyl-2,6-dimethyl-3,4-dihydrothieno[2,3-d]pyrimidin-4-one; 5-Ethyl-2,6-dimethyl-3-amino-thieno[2,3-d]pyrimidin-4(3H)-one; Thieno[2,3-d]pyrimidin-4(3H)-one, 3-amino-5-ethyl-2,6-dimethyl-; 832740-48-4; AKOS BRN 0978; A1370; CS-0136223; FT-0653839
EINECS	Contact for details

Quality Control

Our production of 3-Amino-5-Ethyl-2,6-Dimethylthieno[2,3-D]Pyrimidin-4(3H)-One adheres to strict quality management protocols to ensure batch-to-batch consistency and high purity. The material is characterized and released against comprehensive specifications, including identity confirmation by spectroscopic methods and purity determination by HPLC. A Certificate of Analysis (COA) detailing all relevant parameters is provided with each shipment to support your quality assurance and regulatory needs.

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 away from incompatible materials. For long-term storage, consider an inert atmosphere to maintain stability.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 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.