Description

5,7-Dihydro-2-Methylthieno[3,4-D]Pyrimidine is a high-purity heterocyclic organic compound that serves as a critical advanced intermediate in modern chemical synthesis. Its unique fused thienopyrimidine structure makes it a valuable building block for the development of novel active pharmaceutical ingredients (APIs) and functional materials. This product is essential for research and manufacturing in the pharmaceutical, agrochemical, and specialty chemical industries, where precise molecular architecture is required.

Application

• Pharmaceutical Intermediate: A key synthon for the research and development of new drug candidates, particularly in therapeutic areas requiring complex heterocyclic cores.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where the thienopyrimidine moiety can contribute to biological activity.
• Material Science Research: Serves as a precursor for organic electronic materials, such as components for organic light-emitting diodes (OLEDs) or semiconductors.
• Chemical Research & Development: Employed in academic and industrial R&D labs for exploring novel chemical reactions and synthesizing complex molecular libraries.
• Fine Chemical Production: Acts as a building block in the multi-step synthesis of other high-value, specialized fine chemicals and dyes.

Basic Information

Product Name	5,7-Dihydro-2-Methylthieno[3,4-D]Pyrimidine
CAS No.	36267-71-7
Molecular Formula	C7H8N2S
Molecular Weight	152.22 g/mol
Synonyms	2-Methyl-5,7-dihydrothieno[3,4-d]pyrimidine; Thieno[3,4-d]pyrimidine, 5,7-dihydro-2-methyl-; 2-Methyl-4H,6H-thieno[3,4-d]pyrimidine; 5,7-Dihydro-2-methyl-thieno[3,4-d]pyrimidine; 2-Methyl-4,6-dihydrothieno[3,4-d]pyrimidine
EINECS	Contact for details

Quality Control

Every batch of 5,7-Dihydro-2-Methylthieno[3,4-D]Pyrimidine is manufactured under strict quality management systems. Our products undergo rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistency that meets the demanding standards of pharmaceutical and fine chemical applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee full traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep the container tightly sealed to protect from moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
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.