Description

2-Ethylthieno[2,3-D]Pyrimidin-4-Ol is a high-purity heterocyclic organic compound, serving as a critical advanced intermediate in modern pharmaceutical and agrochemical synthesis. Its unique fused thienopyrimidine structure makes it a valuable building block for developing novel active ingredients. This product is essential for R&D and production teams in the pharmaceutical, agrochemical, and specialty chemical industries seeking to create new molecules with targeted biological activity.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of new drug candidates, particularly for kinase inhibitors and other small-molecule therapeutics.
• Agrochemical Synthesis: Used as a core building block for creating novel herbicides, fungicides, and insecticides with enhanced efficacy and selectivity.
• Material Science Research: Investigated as a precursor for organic electronic materials, such as semiconductors and light-emitting components, due to its electron-rich heterocyclic system.
• Chemical Biology & Proteomics: Employed in the design and synthesis of chemical probes and molecular tags for studying biological pathways and protein functions.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs and fine chemical companies for use in custom synthesis projects and scale-up campaigns.

Basic Information

Product Name	2-Ethylthieno[2,3-D]Pyrimidin-4-Ol
CAS No.	56844-39-4
Molecular Formula	C8H8N2OS
Molecular Weight	180.23 g/mol
Synonyms	2-Ethyl-4-hydroxythieno[2,3-d]pyrimidine; 4-Hydroxy-2-ethylthieno[2,3-d]pyrimidine; Thieno[2,3-d]pyrimidin-4-ol, 2-ethyl-; 2-Ethyl-4-thieno[2,3-d]pyrimidinol; 56844-39-4; 2-Ethylthieno[2,3-d]pyrimidin-4(3H)-one (tautomer)
EINECS	Contact for details

Quality Control

Every batch of 2-Ethylthieno[2,3-D]Pyrimidin-4-Ol is manufactured under strict quality management systems. Our products undergo rigorous analytical testing, including HPLC, NMR, and MS, to ensure identity, purity, and consistency meet the high standards required for advanced synthetic applications. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee supply reliability and traceability.

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). Keep away from incompatible materials. For long-term storage, consider an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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