Description

3-(2-Phenylethyl)-2-Thioxo-1,2,3,5,6,7-Hexahydro-4H-Cyclopenta[4,5]Thieno[2,3-D]Pyrimidin-4-One is a high-purity, advanced pharmaceutical intermediate with a complex heterocyclic structure. This compound is valued for its role as a critical building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those targeting specific therapeutic pathways. It is primarily required by research institutions and pharmaceutical manufacturers engaged in the development of new chemical entities and specialty fine chemicals.

Application

• Pharmaceutical Intermediate: A key precursor in the multi-step synthesis of proprietary drug candidates and investigational new drugs.
• Research & Development: Used in medicinal chemistry for structure-activity relationship (SAR) studies and lead optimization in drug discovery programs.
• API Synthesis: Serves as a core scaffold for constructing complex molecules with potential biological activity in therapeutic areas such as oncology or neurology.
• Fine Chemical Production: Employed in the manufacture of high-value, low-volume specialty chemicals for advanced applications.
• Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for custom synthesis projects under cGMP conditions.

Basic Information

Product Name	3-(2-Phenylethyl)-2-Thioxo-1,2,3,5,6,7-Hexahydro-4H-Cyclopenta[4,5]Thieno[2,3-D]Pyrimidin-4-One
CAS No.	351005-68-0
Molecular Formula	C₁₇H₁₆N₂OS₂
Molecular Weight	328.45 g/mol
Synonyms	3-(2-Phenylethyl)-2-thioxo-1,2,3,5,6,7-hexahydro-4H-cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-one; 351005-68-0; Cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-one, 1,2,3,5,6,7-hexahydro-3-(2-phenylethyl)-2-thioxo-; 3-Phenethyl-2-thioxo-1,2,3,5,6,7-hexahydro-4H-cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-one
EINECS	Contact for details

Quality Control

Our 3-(2-Phenylethyl)-2-Thioxo-1,2,3,5,6,7-Hexahydro-4H-Cyclopenta[4,5]Thieno[2,3-D]Pyrimidin-4-One is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency, meeting the stringent requirements for pharmaceutical R&D and cGMP manufacturing. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (15-25°C). Keep away from incompatible materials. For long-term storage, consider an inert atmosphere to ensure stability.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Any single impurity	≤ 0.5%
Residual Solvents (GC)	Complies with ICH Q3C
Loss on Drying	≤ 0.5%

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