Description

Thieno[2,3-D]Pyrimidin-4(1H)-One, 6-Ethyl-2-Methyl-, Hydrazone (9Ci) is a high-purity heterocyclic organic compound featuring a fused thienopyrimidine core, which is a privileged scaffold in medicinal chemistry. This compound serves as a critical advanced intermediate for the synthesis of novel pharmaceutical candidates and agrochemicals, offering a versatile building block for further functionalization. It is primarily required 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, and plant growth regulators that leverage its heterocyclic structure.
• Material Science Precursor: Serves as a starting material for creating novel organic electronic materials or ligands for metal-organic frameworks (MOFs).
• Academic & Contract Research: Essential for medicinal chemistry programs in universities and CROs (Contract Research Organizations) exploring structure-activity relationships (SAR).
• Custom Synthesis: Basis for the custom manufacturing of proprietary compounds for clients in the life sciences sector.

Basic Information

Product Name	Thieno[2,3-D]Pyrimidin-4(1H)-One, 6-Ethyl-2-Methyl-, Hydrazone (9Ci)
CAS No.	439692-95-2
Molecular Formula	C9H12N4OS
Molecular Weight	224.28 g/mol
Synonyms	6-Ethyl-2-methylthieno[2,3-d]pyrimidin-4(1H)-one hydrazone; 4(1H)-Thieno[2,3-d]pyrimidinone, 6-ethyl-2-methyl-, hydrazone; 6-Ethyl-2-methyl-1,4-dihydrothieno[2,3-d]pyrimidin-4-one hydrazone; Thieno[2,3-d]pyrimidin-4(3H)-one, 6-ethyl-2-methyl-, hydrazone; CAS 439692-95-2
EINECS	Contact for details

Quality Control

Our Thieno[2,3-D]Pyrimidin-4(1H)-One, 6-Ethyl-2-Methyl-, Hydrazone (9Ci) is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided and available upon request to support your regulatory and R&D documentation needs.

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 conditions under an inert atmosphere to maintain optimal stability.

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%
Single Unknown Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 3.0%

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