Description

3-Allyl-2-Mercapto-5-Methylthieno[2,3-D]Pyrimidin-4(3H)-One is a specialized heterocyclic organic compound with the CAS registry number 126637-05-6. This molecule is valued as a key synthetic intermediate and building block in advanced pharmaceutical and agrochemical research. It is primarily sought by R&D chemists and process development scientists working in medicinal chemistry and fine chemical synthesis.

Application

• As a versatile pharmaceutical intermediate in the synthesis of novel drug candidates, particularly those targeting various enzyme systems.
• Utilized as a key scaffold or precursor in medicinal chemistry for structure-activity relationship (SAR) studies.
• Employed in agrochemical research for the development of new active ingredients with potential herbicidal or pesticidal properties.
• Serves as a building block in organic synthesis for constructing complex thienopyrimidine-based heterocycles.
• Used in academic and industrial R&D for exploring new chemical entities and biological activities.
• Potential application as a ligand or catalyst component in coordination chemistry and catalysis research.

Basic Information

Product Name	3-Allyl-2-Mercapto-5-Methylthieno[2,3-D]Pyrimidin-4(3H)-One
CAS No.	126637-05-6
Molecular Formula	C11H10N2OS2
Molecular Weight	250.34 g/mol
Synonyms	3-Allyl-2-mercapto-5-methyl-4H-thieno[2,3-d]pyrimidin-4-one; 4(3H)-Thieno[2,3-d]pyrimidinone, 3-allyl-2-mercapto-5-methyl-; 3-Allyl-5-methyl-2-sulfanylidene-1H-thieno[2,3-d]pyrimidin-4-one; 3-Allyl-2-thioxo-5-methyl-2,3-dihydrothieno[2,3-d]pyrimidin-4(1H)-one; Allyl mercaptomethylthienopyrimidinone; Thienopyrimidinone derivative CAS 126637-05-6
EINECS	Contact for details

Quality Control

Our production of 3-Allyl-2-Mercapto-5-Methylthieno[2,3-D]Pyrimidin-4(3H)-One adheres to stringent in-process controls and final release testing to ensure batch-to-batch consistency and high purity. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with each shipment. We support cGMP compliance for advanced intermediates and can tailor specifications to meet specific research or development project requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (15-25°C). This compound is easily oxidized and should be handled under an inert atmosphere for long-term storage or when opening containers to maximize shelf life. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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