Description

2-Mercapto-3-Methyl-3,5,6,7-Tetrahydro-4H-Cyclopenta[4,5]Thieno[2,3-D]Pyrimidin-4-One is a high-value, complex heterocyclic compound that serves as a critical building block in advanced organic synthesis. Its unique fused-ring structure containing sulfur and nitrogen atoms makes it an essential intermediate for developing novel active pharmaceutical ingredients (APIs) and specialty agrochemicals. This compound is primarily sought after by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors for its role in creating molecules with targeted biological activity.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders, cardiovascular diseases, and oncology.
• Agrochemical Research: Used in the development of new-generation herbicides, fungicides, and insecticides, leveraging its heterocyclic core for enhanced bioactivity.
• Material Science: Serves as a building block for organic electronic materials, such as organic semiconductors and charge-transport materials, due to its electron-rich thienopyrimidine structure.
• Chemical Synthesis: Employed as a versatile scaffold in medicinal chemistry for structure-activity relationship (SAR) studies and library synthesis.
• Bioconjugation & Probe Development: The mercapto group allows for selective conjugation, making it useful in creating biochemical probes and labeled compounds for diagnostic applications.

Basic Information

Product Name	2-Mercapto-3-Methyl-3,5,6,7-Tetrahydro-4H-Cyclopenta[4,5]Thieno[2,3-D]Pyrimidin-4-One
CAS No.	132605-19-7
Molecular Formula	C11H12N2OS2
Molecular Weight	252.35 g/mol
Synonyms	2-Mercapto-3-methyl-3,4,5,6,7,8-hexahydrocyclopenta[4,5]thieno[2,3-d]pyrimidin-4-one; 3-Methyl-2-thioxo-2,3,5,6,7,8-hexahydro-1H-cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-one; 2-Thioxo-3-methyl-2,3,5,6,7,8-hexahydro-1H-cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-one; Cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-one, 2-mercapto-3-methyl-3,5,6,7-tetrahydro-; CAS 132605-19-7
EINECS	Contact for details

Quality Control

Every batch of 2-Mercapto-3-Methyl-3,5,6,7-Tetrahydro-4H-Cyclopenta[4,5]Thieno[2,3-D]Pyrimidin-4-One is manufactured under a strict quality management system and undergoes rigorous analytical testing to ensure identity, purity, and consistency. Our products are suitable for use in GMP-compliant synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles by HPLC is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its sensitivity to oxidation, long-term storage under an inert atmosphere (e.g., nitrogen or argon) is recommended for optimal stability. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Loss on Drying	≤ 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.