Description

(6-Ethyl-2-Methyl-Thieno[2,3-D]Pyrimidin-4-Ylsulfanyl)-Acetic Acid is a high-purity, specialized heterocyclic building block of significant interest in advanced organic synthesis. This compound matters for its role as a key intermediate in the development of novel active pharmaceutical ingredients (APIs) and agrochemicals. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries seeking to create new molecules with targeted biological activity.

Application

• Pharmaceutical Intermediate: A critical building block for the synthesis of novel drug candidates, particularly in therapeutic areas requiring complex heterocyclic cores.
• Agrochemical Research: Used in the development of new generation herbicides, fungicides, and insecticides, leveraging the thienopyrimidine scaffold's bioactivity.
• Material Science Precursor: Serves as a specialty monomer or ligand in the creation of advanced organic electronic materials or metal-organic frameworks (MOFs).
• Chemical Biology Probe: Employed in medicinal chemistry to study enzyme inhibition and structure-activity relationships (SAR) due to its distinctive molecular architecture.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for client-specific synthesis projects requiring high-purity intermediates.

Basic Information

Product Name	(6-Ethyl-2-Methyl-Thieno[2,3-D]Pyrimidin-4-Ylsulfanyl)-Acetic Acid
CAS No.	878709-05-8
Molecular Formula	C11H12N2O2S2
Molecular Weight	268.35 g/mol
Synonyms	4-[(6-Ethyl-2-methylthieno[2,3-d]pyrimidin-4-yl)thio]acetic acid; 2-[(6-Ethyl-2-methyl[1]benzothieno[2,3-d]pyrimidin-4-yl)thio]acetic acid (alternative ring numbering); 6-Ethyl-2-methyl-4-sulfanylacetic acid-thieno[2,3-d]pyrimidine; TZTP-Acetic Acid derivative; Thienopyrimidine acetic acid derivative; CAS 878709-05-8; 4-Mercapto-6-ethyl-2-methylthieno[2,3-d]pyrimidine acetic acid (precursor form)
EINECS	Contact for details

Quality Control

Our (6-Ethyl-2-Methyl-Thieno[2,3-D]Pyrimidin-4-Ylsulfanyl)-Acetic Acid is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and NMR/IR for structural confirmation, to ensure it meets the exacting standards required for research and process chemistry. Certificates of Analysis (COA) with full analytical data are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from heat and incompatible materials. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 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.