Description

Thieno[2,3-D]Pyridazin-4(5H)-One is a high-value heterocyclic organic compound that serves as a critical building block in advanced chemical synthesis. Its fused thiophene-pyridazine structure makes it a versatile intermediate for developing novel active pharmaceutical ingredients (APIs) and functional materials. This compound is essential for research and production teams in the pharmaceutical, agrochemical, and specialty chemical industries seeking to innovate and synthesize new molecular entities.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly for central nervous system (CNS) and anti-inflammatory targets.
• Agrochemical Research: Used as a core scaffold for developing new herbicides, fungicides, and insecticides with unique modes of action.
• Material Science: Serves as a building block for organic semiconductors, conductive polymers, and other electronic materials due to its electron-rich heterocyclic system.
• Dye & Pigment Synthesis: Employed in the creation of specialized dyes and pigments where the thienopyridazine moiety imparts specific color and stability properties.
• Academic & Industrial R&D: A valuable reagent for medicinal chemistry programs and exploratory synthetic chemistry in both university and corporate research laboratories.

Basic Information

Product Name	Thieno[2,3-D]Pyridazin-4(5H)-One
CAS No.	824-23-7
Molecular Formula	C6H4N2OS
Molecular Weight	152.17 g/mol
Synonyms	4H-Thieno[2,3-d]pyridazin-4-one; Thieno[2,3-d]pyridazin-4(5H)-one; 5H-Thieno[2,3-d]pyridazin-4-one; 824-23-7; Thienopyridazinone; NSC 163049; AI3-52200; CCRIS 6051
EINECS	Contact for details

Quality Control

Our Thieno[2,3-D]Pyridazin-4(5H)-One is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, NMR and IR for structural confirmation, and residual solvent analysis. We provide full traceability and Certificates of Analysis (COA) are available for all shipments to ensure compliance with your research and production specifications.

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. The container should be kept tightly sealed to protect from moisture.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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