Description

(5,6-Dimethyl-4-Oxo-3,4-Dihydro-Thieno[2,3-D]Pyrimidin-2-Yl)-Acetic Acid Ethyl Ester is a high-purity, heterocyclic organic compound that serves as a critical synthetic intermediate in advanced pharmaceutical research and development. Its fused thienopyrimidine core structure makes it a valuable building block for creating novel active pharmaceutical ingredients (APIs) with targeted therapeutic effects. This compound is primarily utilized by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, particularly those targeting kinase inhibition and other enzymatic pathways.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and pesticides due to its bioactive heterocyclic scaffold.
• Chemical Biology Probes: Serves as a core structure for designing molecular probes to study biological processes and disease mechanisms.
• Material Science: Potential building block for advanced organic electronic materials and specialty polymers.
• Academic & Contract Research: Essential reagent for synthetic organic chemistry research in university and CRO (Contract Research Organization) laboratories.

Basic Information

Product Name	(5,6-Dimethyl-4-Oxo-3,4-Dihydro-Thieno[2,3-D]Pyrimidin-2-Yl)-Acetic Acid Ethyl Ester
CAS No.	105219-73-6
Molecular Formula	C₁₄H₁₆N₂O₃S
Molecular Weight	292.35 g/mol
Synonyms	Ethyl (5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)acetate; 2-(Ethoxycarbonylmethyl)-5,6-dimethyl-3H-thieno[2,3-d]pyrimidin-4-one; Ethyl 2-(5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)acetate; Thieno[2,3-d]pyrimidine-2-acetic acid, 5,6-dimethyl-4-oxo-3,4-dihydro-, ethyl ester; CAS 105219-73-6
EINECS	Contact for details

Quality Control

Every batch of (5,6-Dimethyl-4-Oxo-3,4-Dihydro-Thieno[2,3-D]Pyrimidin-2-Yl)-Acetic Acid Ethyl Ester is manufactured and tested under a strict quality management system. We provide comprehensive analytical data to ensure identity, purity, and consistency for your critical R&D and scale-up processes. A detailed Certificate of Analysis (COA) including HPLC purity, NMR, and MS data is supplied with each shipment to guarantee it meets your specific research-grade or process development requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep the container tightly sealed to protect from moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
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.