Description

3-Methyl-2-[2-Methyl-3-(3-Methyl-3H-Benzothiazol-2-Ylidene)Prop-1-Enyl]Benzothiazolium Iodide is a specialized cyanine dye salt, a key intermediate in the synthesis of near-infrared (NIR) absorbing and fluorescent compounds. Its value lies in its precise molecular structure, which is engineered for applications requiring specific light absorption and emission properties in the NIR spectrum. This compound is essential for researchers and manufacturers in the fields of optical data storage, laser technology, biomedical imaging, and as a sensitizer in photographic and photopolymerization processes.

Application

• Optical Data Storage Media: A critical component in the formulation of dyes for recordable CDs, DVDs, and advanced optical discs.
• Laser Dye and NIR Absorber: Used in the development of tunable dye lasers and as a non-linear optical material for laser protection and modulation.
• Biomedical Imaging Probes: Serves as a building block for synthesizing fluorescent labels and contrast agents for in vivo imaging and diagnostics.
• Photographic Sensitizers: Employed in silver halide and other photographic systems to extend spectral sensitivity into the red and infrared regions.
• Photopolymerization Initiators: Acts as a photoinitiator or co-initiator in UV-curable inks, coatings, and 3D printing resins.
• Organic Photovoltaic (OPV) Research: Investigated as an electron donor or acceptor material in the active layer of solar cells.
• Chemical Sensors: Utilized in the development of colorimetric or fluorescent sensors for detecting specific ions or molecules.

Basic Information

Product Name	3-Methyl-2-[2-Methyl-3-(3-Methyl-3H-Benzothiazol-2-Ylidene)Prop-1-Enyl]Benzothiazolium Iodide
CAS No.	2783-73-5
Molecular Formula	C21H21IN2S2
Molecular Weight	516.44 g/mol
Synonyms	2-[2-[3-(1,3-Dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene]-3-methylcyclohex-1-en-1-yl]-1,3,3-trimethyl-3H-indolium iodide; Cyanine dye NK-2014; 1,3,3-Trimethyl-2-[2-(1,3,3-trimethylindolin-2-ylidene)ethylidene]indolium iodide (common parent structure alias); NIR Cyanine Dye Intermediate; Benzothiazolium, 3-methyl-2-[2-methyl-3-(3-methyl-3H-benzothiazol-2-ylidene)-1-propen-1-yl]-, iodide; Photographic sensitizing dye
EINECS	Contact for details

Quality Control

Our production of this advanced cyanine dye intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through analytical techniques including HPLC for purity, NMR and IR for structural confirmation, and spectrophotometry for absorption characteristics. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and relevant physical properties is provided with each shipment to support your R&D and manufacturing requirements.

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 compound is hygroscopic (moisture-sensitive); ensure the container is sealed under an inert atmosphere if specified for high-purity grades. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark green to bronze crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 95.0% (Standard Grade)
Loss on Drying	≤ 2.0 %
Residue on Ignition	≤ 0.5 %
λmax (Absorption Maximum)	Contact for details

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