Description

Thieno[2,3-D]Pyrimidine-3(4H)-Acetic Acid, -α-,6-Dimethyl-4-Oxo- is a high-purity, heterocyclic organic compound that serves as a critical building block in advanced chemical synthesis. Its value lies in its unique fused-ring structure, which is essential for constructing complex molecules with specific biological or material properties. This intermediate is primarily needed by pharmaceutical R&D laboratories and fine chemical manufacturers engaged in developing novel active pharmaceutical ingredients (APIs) and specialty agrochemicals.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of novel drug candidates, particularly in kinase inhibitor and antiviral therapeutic areas.
• Agrochemical Synthesis: Used as a core scaffold for creating advanced pesticides and herbicides with targeted modes of action.
• Material Science Research: Serves as a precursor for organic electronic materials, such as semiconductors or light-emitting compounds, due to its electron-rich thienopyrimidine core.
• Chemical Biology Probes: Employed in the design and synthesis of molecular probes for studying enzyme function and cellular pathways.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for client-specific, multi-step synthetic projects.

Basic Information

Product Name	Thieno[2,3-D]Pyrimidine-3(4H)-Acetic Acid, -α-,6-Dimethyl-4-Oxo-
CAS No.	118376-67-3
Molecular Formula	C11H12N2O3S
Molecular Weight	252.29 g/mol
Synonyms	4-Oxo-α,6-dimethylthieno[2,3-d]pyrimidine-3(4H)-acetic acid; 2-(4-Oxo-6-methylthieno[2,3-d]pyrimidin-3(4H)-yl)-2-methylpropanoic acid; α,6-Dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-3-acetic acid; Thieno[2,3-d]pyrimidine-3-acetic acid, α,6-dimethyl-4-oxo-; 118376-67-3; Thienopyrimidine acetic acid derivative
EINECS	Contact for details

Quality Control

Our Thieno[2,3-D]Pyrimidine-3(4H)-Acetic Acid, -α-,6-Dimethyl-4-Oxo- is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods, to ensure it meets the exacting standards required for research and synthesis. Certificates of Analysis (COA) detailing batch-specific results are available upon request 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 a controlled room temperature (typically 15-25°C). Keep away from incompatible materials. For long-term storage, consider inert atmosphere conditions to maximize stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
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.