Description

2-[(3,4-Dichlorobenzyl)Sulfanyl]-3-(4-Ethoxyphenyl)-5,6,7,8-Tetrahydro[1]Benzothieno[2,3-D]Pyrimidin-4(3H)-One is a high-purity, advanced pharmaceutical intermediate with the CAS registry number 499125-43-8. This complex heterocyclic compound is valued for its role as a critical building block in the synthesis of novel active pharmaceutical ingredients (APIs). It is primarily targeted at research institutions and pharmaceutical manufacturers engaged in the development of new therapeutic agents, particularly within oncology and other specialized drug discovery pipelines.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the multi-step synthesis of proprietary drug candidates and novel chemical entities.
• Drug Discovery & Development: Used in medicinal chemistry research for structure-activity relationship (SAR) studies and lead optimization.
• Contract Research & Manufacturing (CRO/CMO): Supplied to organizations specializing in custom synthesis and process development for client projects.
• Academic Research: Utilized in university and institutional labs for investigating new heterocyclic chemistry and biological activity.
• Reference Standard: Can be supplied as a high-purity standard for analytical method development and quality control in API production.

Basic Information

Product Name	2-[(3,4-Dichlorobenzyl)Sulfanyl]-3-(4-Ethoxyphenyl)-5,6,7,8-Tetrahydro[1]Benzothieno[2,3-D]Pyrimidin-4(3H)-One
CAS No.	499125-43-8
Molecular Formula	C25H22Cl2N2O2S2
Molecular Weight	533.49 g/mol
Synonyms	2-[(3,4-Dichlorobenzyl)thio]-3-(4-ethoxyphenyl)-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-4(3H)-one; 2-((3,4-Dichlorobenzyl)thio)-3-(4-ethoxyphenyl)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one; 499125-43-8; Benzothienopyrimidinone derivative; Tetrahydrobenzothienopyrimidinone
EINECS	Contact for details

Quality Control

Our production of 2-[(3,4-Dichlorobenzyl)Sulfanyl]-3-(4-Ethoxyphenyl)-5,6,7,8-Tetrahydro[1]Benzothieno[2,3-D]Pyrimidin-4(3H)-One adheres to stringent quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure compliance with research and pharmaceutical-grade standards. A comprehensive Certificate of Analysis (COA) detailing purity, impurities, and physical characteristics is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (typically 15-25°C). The container should be kept in a well-ventilated area and protected from moisture. For long-term storage, consider inert atmosphere conditions.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
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.