Description

((2E)-2-[(2Z)-2-(3-Ethyl-1,3-Benzothiazol-2(3H)-Ylidene)Ethylidene]-2,3-Dihydro-1H-Inden-1-Ylidene)Malononitrile is a specialized organic dye intermediate with a complex polymethine structure. This compound matters for its role as a key precursor in synthesizing advanced functional dyes and pigments, particularly near-infrared (NIR) absorbers and sensitizers. It is primarily needed by manufacturers in the optical materials, imaging, and specialty chemical sectors for applications requiring precise light absorption properties.

Application

• NIR-Absorbing Dye Synthesis: A critical building block for dyes used in optical filters, laser protection, and security inks.
• Photovoltaic Sensitizers: Used in the research and development of dye-sensitized solar cells (DSSCs) and other photoelectrochemical devices.
• Nonlinear Optical Materials: Serves as a precursor for chromophores in materials with applications in telecommunications and data processing.
• Bioimaging Probes: Potential use in the development of fluorescent or NIR probes for biological and medical imaging.
• Organic Semiconductor Research: Utilized as an electron-accepting unit in the design of novel organic electronic materials.
• Photodynamic Therapy (PDT) Agents: Investigated as a component in photosensitizers for targeted medical therapies.

Basic Information

Product Name	((2E)-2-[(2Z)-2-(3-Ethyl-1,3-Benzothiazol-2(3H)-Ylidene)Ethylidene]-2,3-Dihydro-1H-Inden-1-Ylidene)Malononitrile
CAS No.	2510-09-0
Molecular Formula	C23H17N3S
Molecular Weight	367.47 g/mol
Synonyms	2-[(2E)-2-[(2Z)-2-(3-Ethyl-1,3-benzothiazol-2(3H)-ylidene)ethylidene]-1H-inden-1-ylidene]malononitrile; (2E)-2-[(2Z)-2-(3-Ethyl-1,3-benzothiazol-2(3H)-ylidene)ethylidene]-2,3-dihydro-1H-inden-1-ylidenemalononitrile; 3-Ethyl-2-[(1E,3Z)-3-(1,2-dihydro-2-(dicyanomethylene)-1H-inden-3-yl)allylidene]benzothiazoline; NIR Dye Intermediate; Benzothiazole Cyanine Dye Derivative; Polymethine Cyanine Dye
EINECS	Contact for details

Quality Control

Our production of ((2E)-2-[(2Z)-2-(3-Ethyl-1,3-Benzothiazol-2(3H)-Ylidene)Ethylidene]-2,3-Dihydro-1H-Inden-1-Ylidene)Malononitrile adheres to stringent internal quality protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced chromatographic and spectroscopic techniques. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your R&D and manufacturing quality systems.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This material is light-sensitive (store away from light) and easily oxidized (store under inert atmosphere). For long-term storage, consider packaging under an inert gas such as nitrogen or argon in a sealed, light-resistant container.

Specification

Item	Specification
Appearance	Dark green to black crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Single Max. Impurity (HPLC)	≤ 1.0%

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