Description

3H-Benzo[4,5]Thieno[3,2-D]Pyrimidin-4-One is a high-value heterocyclic organic compound featuring a fused benzothienopyrimidinone core structure. This specialized chemical building block is critical for advanced research and development in medicinal chemistry and material science. It is primarily sought after by pharmaceutical R&D teams and fine chemical manufacturers for the synthesis of novel active pharmaceutical ingredients (APIs) and functional organic materials.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of potential therapeutic agents, particularly those targeting kinase inhibition or other enzyme-related pathways.
• Medicinal Chemistry Research: Used as a core scaffold for constructing compound libraries in drug discovery programs to explore new structure-activity relationships (SAR).
• Organic Electronic Materials: Investigated as a potential building block for organic semiconductors, OLEDs, or other electronic materials due to its fused aromatic system.
• Agrochemical Development: Employed in research for creating new agrochemicals, such as herbicides or fungicides, leveraging its heterocyclic properties.
• Dye and Pigment Synthesis: Acts as an intermediate in the development of specialized dyes and pigments with specific light-absorption or emission characteristics.
• Academic and Institutional Research: Utilized in universities and research institutes for fundamental studies in organic synthesis and heterocyclic chemistry.

Basic Information

Product Name	3H-Benzo[4,5]Thieno[3,2-D]Pyrimidin-4-One
CAS No.	36822-08-9
Molecular Formula	C10H6N2OS
Molecular Weight	202.23 g/mol
Synonyms	3H-Benzo[4,5]thieno[3,2-d]pyrimidin-4-one; Benzo[4,5]thieno[3,2-d]pyrimidin-4(3H)-one; 4H-Benzo[4,5]thieno[3,2-d]pyrimidin-4-one; Thieno[3,2-d]pyrimidin-4-one, 3H-benzo-; 36822-08-9; BTPO (abbreviation)
EINECS	Contact for details

Quality Control

Our 3H-Benzo[4,5]Thieno[3,2-D]Pyrimidin-4-One is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity, essential for sensitive R&D applications. Each lot is analyzed using advanced techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment.

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 storing under an inert atmosphere to maintain product integrity.

Specification

Item	Specification
Appearance	Off-white to light yellow 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.