Description

2-Ethyl-3-(2-Hydroxyethyl)-5,6-Dimethylthieno[2,3-D]Pyrimidin-4(3H)-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 in therapeutic areas requiring sophisticated molecular architectures. It is primarily sought by research institutions, pharmaceutical development laboratories, and fine chemical manufacturers engaged in cutting-edge drug discovery and process chemistry.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of complex drug candidates, especially those targeting central nervous system (CNS) disorders, oncology, and anti-inflammatory pathways.
• Research & Development (R&D): Used in medicinal chemistry for structure-activity relationship (SAR) studies and the development of new chemical entities (NCEs).
• Process Chemistry: Employed in the scale-up and optimization of synthetic routes for potential APIs during clinical trial material manufacturing.
• Fine Chemical Synthesis: Acts as a specialized building block for creating other complex heterocyclic compounds used in agrochemicals or material science research.

Basic Information

Product Name	2-Ethyl-3-(2-Hydroxyethyl)-5,6-Dimethylthieno[2,3-D]Pyrimidin-4(3H)-One
CAS No.	380646-93-5
Molecular Formula	C₁₄H₁₈N₂O₂S
Molecular Weight	278.37 g/mol
Synonyms	2-Ethyl-3-(2-hydroxyethyl)-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-one; 5,6-Dimethyl-2-ethyl-3-(2-hydroxyethyl)thieno[2,3-d]pyrimidin-4(3H)-one; Thieno[2,3-d]pyrimidin-4(3H)-one, 2-ethyl-3-(2-hydroxyethyl)-5,6-dimethyl-; 380646-93-5; 2-Ethyl-3-(2-hydroxyethyl)-5,6-dimethyl-4H-thieno[2,3-d]pyrimidin-4-one
EINECS	Contact for details

Quality Control

Our 2-Ethyl-3-(2-Hydroxyethyl)-5,6-Dimethylthieno[2,3-D]Pyrimidin-4(3H)-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for pharmaceutical R&D. A comprehensive Certificate of Analysis (COA) detailing purity, impurities, and physical characteristics is provided with every shipment to support your quality assurance and regulatory documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This material is light-sensitive (store away from light) and may be hygroscopic (moisture-sensitive); therefore, containers should be kept sealed under an inert atmosphere when not in use to prevent degradation.

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%
Single Unknown Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 2.0%

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