Description

5-Chloro-9,10-Dimethyl-8H-Thieno[2',3':4,5]Pyrimido[2,1-A]Phthalazin-8-One is a high-value, complex heterocyclic compound serving as a critical advanced intermediate in modern organic synthesis. Its unique fused-ring structure containing thieno, pyrimido, and phthalazinone moieties makes it a versatile building block for developing novel pharmacologically active molecules. This compound is essential for research and development chemists in the pharmaceutical and agrochemical industries, particularly those focused on creating new libraries of bioactive compounds for screening and lead optimization.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly for central nervous system (CNS) and oncology targets.
• Agrochemical Research: Used in the development of new active ingredients for crop protection products, leveraging its heterocyclic scaffold.
• Material Science: Serves as a building block for organic electronic materials and specialty dyes due to its conjugated system.
• Academic & Contract Research: Employed in university and CRO laboratories for methodological studies and the discovery of new chemical entities.
• Chemical Biology Probe Development: Utilized to create tool compounds for studying biological pathways and target validation.

Basic Information

Product Name	5-Chloro-9,10-Dimethyl-8H-Thieno[2',3':4,5]Pyrimido[2,1-A]Phthalazin-8-One
CAS No.	315676-39-2
Molecular Formula	C16H10ClN3OS
Molecular Weight	327.78 g/mol
Synonyms	5-Chloro-9,10-dimethyl-8H-thieno[2',3':4,5]pyrimido[2,1-a]phthalazin-8-one; 8H-Thieno[2',3':4,5]pyrimido[2,1-a]phthalazin-8-one, 5-chloro-9,10-dimethyl-; 315676-39-2; Thienopyrimidophthalazinone derivative; CAS 315676-39-2
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and high purity. Every lot is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your R&D and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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 stability.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (HPLC)	Conforms to reference standard
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Single Unknown Impurity (HPLC)	≤ 1.0%
Total Impurities (HPLC)	≤ 3.0%

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