Description

Thieno[2,3-D]Pyrimidin-4(1H)-One, 5-Ethyl-6-Methyl-, Hydrazone (9Ci) is a high-purity, heterocyclic organic compound belonging to the thienopyrimidine class, a scaffold of significant interest in medicinal chemistry. This hydrazone derivative serves as a critical advanced intermediate or building block for the synthesis of novel pharmaceutical candidates and agrochemicals. It is primarily needed by research institutions, pharmaceutical R&D laboratories, and fine chemical manufacturers engaged in developing new therapeutic agents.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of potential kinase inhibitors, anticancer agents, and other biologically active molecules targeting the thienopyrimidine pharmacophore.
• Agrochemical Research: Used in the development of new herbicides, fungicides, or pesticides where the thienopyrimidine core offers specific biological activity.
• Chemical Biology & Probe Development: Serves as a precursor for creating molecular probes to study enzyme function and biological pathways in academic and industrial research.
• Material Science Research: Potential intermediate for the synthesis of organic electronic materials or ligands for catalytic systems due to its conjugated heterocyclic structure.
• Contract Research & Manufacturing (CRO/CMO): Supplied to organizations specializing in custom synthesis and scale-up of complex organic molecules for client projects.

Basic Information

Product Name	Thieno[2,3-D]Pyrimidin-4(1H)-One, 5-Ethyl-6-Methyl-, Hydrazone (9Ci)
CAS No.	439692-91-8
Molecular Formula	C9H12N4OS
Molecular Weight	224.28 g/mol
Synonyms	5-Ethyl-6-methylthieno[2,3-d]pyrimidin-4(1H)-one hydrazone; 4(1H)-Thieno[2,3-d]pyrimidinone, 5-ethyl-6-methyl-, hydrazone (9CI); 5-Ethyl-6-methyl-4-hydrazinylidene-3,4-dihydrothieno[2,3-d]pyrimidine; 5-Ethyl-6-methylthieno[2,3-d]pyrimidine-4(1H)-one hydrazone
EINECS	Contact for details

Quality Control

Our Thieno[2,3-D]Pyrimidin-4(1H)-One, 5-Ethyl-6-Methyl-, Hydrazone (9Ci) is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and MS, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided and available upon request to support your R&D and quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (typically 15-25°C). This compound may be light-sensitive and/or moisture-sensitive; prolonged exposure to air, light, or humidity should be avoided to maintain stability.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%

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