Description

7-Methyl-2-(3-Methyl-2-Thienyl)-2,3,5,6,7,8-Hexahydropyrido[4',3':4,5]Thieno[2,3-D]Pyrimidin-4(1H)-One is a high-purity, complex heterocyclic compound that serves as a critical advanced pharmaceutical intermediate. Its intricate fused-ring structure makes it a valuable building block for the synthesis of novel active pharmaceutical ingredients (APIs), particularly in therapeutic areas requiring sophisticated molecular scaffolds. This compound is primarily utilized by research institutions and pharmaceutical manufacturers engaged in the development of new chemical entities and specialty fine chemicals.

Application

• Pharmaceutical Intermediate: Key building block in the research and synthesis of novel drug candidates, especially for central nervous system (CNS) and oncology targets.
• Medicinal Chemistry Research: Used as a core scaffold for structure-activity relationship (SAR) studies and library synthesis in drug discovery programs.
• Chemical Reference Standard: Serves as a high-purity analytical standard for quality control and method development in API manufacturing.
• Process Chemistry Development: Employed in route scouting and optimization for the scalable production of complex heterocyclic APIs.
• Academic Research: Utilized in universities and research institutes for studying heterocyclic chemistry, reaction mechanisms, and new synthetic methodologies.
• Contract Research & Manufacturing (CRO/CMO): Supplied to service organizations supporting pharmaceutical clients with custom synthesis and development.

Basic Information

Item	Details
Product Name	7-Methyl-2-(3-Methyl-2-Thienyl)-2,3,5,6,7,8-Hexahydropyrido[4',3':4,5]Thieno[2,3-D]Pyrimidin-4(1H)-One
CAS No.	321529-55-9
Molecular Formula	C17H19N3OS2
Molecular Weight	345.48 g/mol
Synonyms	7-Methyl-2-(3-methylthiophen-2-yl)-1,2,3,5,6,7,8,8a-octahydropyrido[4',3':4,5]thieno[2,3-d]pyrimidin-4(1H)-one; Hexahydropyridothienopyrimidinone derivative; CAS 321529-55-9; Thienopyrido[4,3-d]pyrimidinone; Fused thienopyrimidine intermediate; Advanced pharmaceutical intermediate 321529-55-9
EINECS	Contact for details

Quality Control

Our production of 7-Methyl-2-(3-Methyl-2-Thienyl)-2,3,5,6,7,8-Hexahydropyrido[4',3':4,5]Thieno[2,3-D]Pyrimidin-4(1H)-One adheres to stringent quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via NMR and mass spectrometry, to ensure it meets the exacting standards required for pharmaceutical R&D. A Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (typically 15-25°C). The compound may be light-sensitive and should be handled under appropriate conditions to maintain stability. For long-term storage, consider inert atmosphere conditions.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (HPLC)	Conforms
Identification (NMR)	Conforms
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.