Description

5,7-Dichloro-2-(6-Chloro-4-Methyl-3-Oxobenzo[B]Thien-2(3H)-Ylidene)-4-Methylbenzo[B]Thiophene-3(2H)-One is a high-purity, specialized organic intermediate belonging to the benzo[b]thiophene class. This compound is valued for its complex heterocyclic structure, which serves as a critical building block in advanced chemical synthesis. It is primarily sought after by research institutions and industrial manufacturers engaged in the development of novel dyes, pigments, and functional materials.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of high-performance organic pigments and dyes, particularly for applications requiring specific color fastness and stability.
• Pharmaceutical Research: Serves as a sophisticated scaffold or intermediate in medicinal chemistry for the discovery and development of new active pharmaceutical ingredients (APIs).
• Organic Electronic Materials: Used in research for developing organic semiconductors, charge transport materials, or other components for OLEDs and photovoltaic cells.
• Chemical Synthesis Building Block: Employed in advanced organic synthesis to construct complex polycyclic structures for various specialty chemical applications.
• Analytical Reference Standard: Supplied as a high-purity standard for quality control and analytical method development in chemical manufacturing.
• Photoreactive Compound Research: Investigated for potential use in photoinitiators or light-sensitive materials due to its specific molecular architecture.

Basic Information

Product Name	5,7-Dichloro-2-(6-Chloro-4-Methyl-3-Oxobenzo[B]Thien-2(3H)-Ylidene)-4-Methylbenzo[B]Thiophene-3(2H)-One
CAS No.	6371-23-9
Molecular Formula	C19H11Cl3O2S2
Molecular Weight	449.77 g/mol
Synonyms	Benzo[b]thiophene-3(2H)-one, 5,7-dichloro-2-[(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)methyl]-4-methyl-; 2-[(6-Chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)methyl]-5,7-dichloro-4-methylbenzo[b]thiophene-3(2H)-one; 5,7-Dichloro-2-[(6-chloro-4-methyl-3-oxo-2,3-dihydro-1-benzothiophen-2-ylidene)methyl]-4-methyl-1-benzothiophen-3(2H)-one; Vat Yellow 4G (related pigment intermediate); CI 59100 (Color Index reference).
EINECS	Contact for details

Quality Control

Our production of 5,7-Dichloro-2-(6-Chloro-4-Methyl-3-Oxobenzo[B]Thien-2(3H)-Ylidene)-4-Methylbenzo[B]Thiophene-3(2H)-One adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR spectroscopy, to ensure consistent high quality and batch-to-batch reproducibility. Certificates of Analysis (COA) detailing all specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep the container tightly sealed when not in use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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