Description

9-Thioxanthenone is a versatile sulfur-containing heterocyclic ketone with the CAS number 492-21-7, serving as a key intermediate in advanced organic synthesis. Its unique thioxanthene scaffold makes it a valuable building block for the development of functional materials and active pharmaceutical ingredients (APIs). This compound is primarily sought by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for its role in creating novel molecular architectures.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of tricyclic antidepressants, antipsychotic agents, and other bioactive molecules containing the thioxanthene core.
• Photoinitiator & Photoreactive Agent: Used in the formulation of UV-curable inks, coatings, and adhesives due to its light-absorbing properties.
• Organic Light-Emitting Diode (OLED) Research: Acts as an electron-transport material or a host molecule in the development of novel electroluminescent devices.
• Dye & Pigment Synthesis: Serves as a starting material for manufacturing sulfur-based dyes and high-performance pigments.
• Agrochemical Development: Employed as an intermediate in creating new generations of herbicides and fungicides.
• Academic & Industrial R&D: A fundamental reagent for methodological studies in organic chemistry, particularly in heterocyclic and sulfur chemistry.

Basic Information

Product Name	9-Thioxanthenone
CAS No.	492-21-7
Molecular Formula	C₁₃H₈OS
Molecular Weight	212.27 g/mol
Synonyms	Thioxanthen-9-one; 9H-Thioxanthen-9-one; Thioxanthone; 9-Oxothioxanthene; NSC 403697; 2,7-Dihydrodibenzo[th,i]xanthene-7,14-dione (incorrect but sometimes listed); Dibenzo[γ,th]xanthen-7-one
EINECS	207-758-8

Quality Control

Our 9-Thioxanthenone is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity, IR and NMR for structural confirmation, and tests for residual solvents and heavy metals. A detailed Certificate of Analysis (COA) is provided with each shipment, ensuring traceability and compliance with your research or production specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Keep away from heat sources and incompatible materials. The product is light-sensitive and should be handled accordingly to maintain stability.

Specification

Item	Specification
Appearance	Yellow to pale brown crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	208 - 212 °C
Loss on Drying	≤ 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.