Description

Thieno[2,3-d]pyrimidine-2,4(1H,3H)-dithione is a high-value heterocyclic building block and key synthetic intermediate. This compound is essential for researchers and manufacturers developing novel active pharmaceutical ingredients (APIs) and advanced organic materials. It is primarily utilized in pharmaceutical R&D, agrochemical synthesis, and as a precursor for complex organic electronic materials.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of kinase inhibitors and other small-molecule therapeutic agents.
• Agrochemical Research: Used in developing novel fungicides and herbicides with specific modes of action.
• Material Science: Serves as a building block for organic semiconductors and conductive polymers.
• Chemical Synthesis: A versatile scaffold for constructing complex fused heterocyclic systems in medicinal chemistry.
• Academic & Industrial R&D: Employed in discovery chemistry for creating libraries of novel compounds.

Basic Information

Product Name	Thieno[2,3-d]pyrimidine-2,4(1H,3H)-dithione
CAS No.	18740-44-8
Molecular Formula	C6H4N2S3
Molecular Weight	200.31 g/mol
Synonyms	2,4-Dithioxo-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidine; Thieno[2,3-d]pyrimidine-2,4-dithiol; 2,4(1H,3H)-Thieno[2,3-d]pyrimidinedithione; 1H-Thieno[2,3-d]pyrimidine-2,4-dithione; 2,4-Dimercaptothieno[2,3-d]pyrimidine; 18740-44-8; Thienopyrimidinedithione
EINECS	Contact for details

Quality Control

Our Thieno[2,3-d]pyrimidine-2,4(1H,3H)-dithione is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods, to ensure consistent quality and reliable performance in your synthesis. Certificates of Analysis (COA) documenting all critical parameters are available 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 strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to brown 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%

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