Description

Bis[3-[(1,3-Dihydro-1,3,3-Trimethyl-2H-Indol-2-Ylidene)Ethylidene]-9-Ethyl-3H-Carbazolium] Sulphate is a high-purity, functional organic salt belonging to the cyanine dye family, valued for its strong light absorption and fluorescence properties. This compound is critical for advanced applications requiring precise optical characteristics and photostability. It is primarily sought by manufacturers and research institutions in the photonics, imaging, and specialty chemical synthesis sectors.

Application

• Optical Data Storage: As a key component in recordable optical media (e.g., CD-R, DVD-R) for its light-sensitive dye properties.
• Laser Technology: Used in the formulation of dye lasers and as a saturable absorber for mode-locking in ultrafast laser systems.
• Biomedical Imaging & Sensing: Employed as a fluorescent probe or tag in bioimaging, flow cytometry, and diagnostic assays due to its emission characteristics.
• Non-Linear Optics (NLO): A material for research and development in photonic devices, optical limiters, and switches exploiting its non-linear optical response.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer in medical research for targeted cell treatments.
• Organic Semiconductor Research: Serves as an electron-accepting or charge-transport material in the development of organic light-emitting diodes (OLEDs) and photovoltaic cells.
• Analytical Chemistry: Utilized as a staining agent or fluorescent marker in chromatography and electrophoresis.
• Specialty Dye & Pigment Intermediate: Acts as a precursor for synthesizing complex colorants with specific spectral properties for high-tech applications.

Basic Information

Product Name	Bis[3-[(1,3-Dihydro-1,3,3-Trimethyl-2H-Indol-2-Ylidene)Ethylidene]-9-Ethyl-3H-Carbazolium] Sulphate
CAS No.	85283-93-8
Molecular Formula	C52H56N4O4S
Molecular Weight	833.09 g/mol
Synonyms	Bis(3-ethyl-2-[3-(3-ethyl-2(3H)-benzothiazolylidene)-1-propenyl]benzothiazolium) Sulfate; Cyanine Dye NK-2016; 3-Ethyl-2-[3-(3-ethyl-2(3H)-benzothiazolylidene)-1-propenyl]benzothiazolium Sulfate (dimer); NK 2016; Biscarbocyanine Dye Sulfate Salt; Heptamethine Cyanine Dye Derivative; 1,1'-(3,3,3',3'-Tetramethyl-1,1'-indolin-4,7-diyl)bis[3-ethyl-3H-indolium] Sulfate (related structure); Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our production of Bis[3-[(1,3-Dihydro-1,3,3-Trimethyl-2H-Indol-2-Ylidene)Ethylidene]-9-Ethyl-3H-Carbazolium] Sulphate adheres to stringent in-process controls to ensure batch-to-batch consistency and high optical purity. Quality is verified through advanced analytical techniques including HPLC, UV-Vis, and NMR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and spectral properties is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The product is light-sensitive; prolonged exposure to light should be avoided to prevent degradation of its optical properties. Keep the container sealed to minimize contact with atmospheric moisture.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (UV-Vis)	λmax conforms (typically 650-850 nm range)
Assay (HPLC)	≥ 95.0%
Moisture Content (KF)	≤ 2.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Optical Purity	Contact for details

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