Description

2-[2-[2-Chloro-3-[2-(3-ethyl-1,3-dihydro-1,1-dimethyl-2H-benz[e]indol-2-ylidene)ethylidene]-1-cyclohexen-1-yl]ethenyl]-3-ethyl-1,1-dimethyl-1H-benz[e]indolium 4-methylbenzenesulfonate is a high-purity, functional organic salt belonging to the cyanine dye family, valued for its exceptional photophysical properties. This compound is critical for advanced research and development in photonics and materials science, where precise light absorption and emission characteristics are paramount. It is primarily sought by manufacturers and researchers in the optical data storage, laser technology, and non-linear optical (NLO) material sectors.

Application

• Optical Data Storage Media: A key component in the formulation of recordable (R) and rewritable (RW) optical discs (e.g., CD-R, DVD±R).
• Laser Dye and Sensitizer: Used as an active medium in tunable dye lasers and as a photosensitizer in various photochemical applications.
• Non-Linear Optical (NLO) Materials: Incorporated into polymers and crystals for frequency doubling, optical switching, and electro-optic modulation devices.
• Biomedical Imaging: Potential application as a near-infrared (NIR) fluorescent probe or label for bio-sensing and cellular imaging.
• Photodynamic Therapy (PDT) Research: Investigated for its light-activated properties in targeted therapeutic applications.
• Organic Photovoltaic (OPV) Cells: Used in research for developing light-absorbing layers in next-generation solar cells.

Basic Information

Item	Details
Product Name	2-[2-[2-Chloro-3-[2-(3-ethyl-1,3-dihydro-1,1-dimethyl-2H-benz[e]indol-2-ylidene)ethylidene]-1-cyclohexen-1-yl]ethenyl]-3-ethyl-1,1-dimethyl-1H-benz[e]indolium 4-methylbenzenesulfonate
CAS No.	460337-33-1
Molecular Formula	C46H49ClN2O3S
Molecular Weight	745.41 g/mol
Synonyms	Cy5.5 Tosylate; 1H-Benz[e]indolium, 2-[2-[2-chloro-3-[(1E,3E)-3-(1,3-dihydro-3,3-dimethyl-1-ethyl-2H-benz[e]indol-2-ylidene)-1-propen-1-yl]-1-cyclohexen-1-yl]ethenyl]-3,3-dimethyl-1-ethyl-, 4-methylbenzenesulfonate; Cyanine 5.5 tosylate salt; Sulfo-Cyanine5.5 tosylate; 2-[2-[2-Chloro-3-[(1E,3E)-3-(3-ethyl-1,1-dimethyl-1,3-dihydro-2H-benz[e]indol-2-ylidene)prop-1-en-1-yl]cyclohex-1-en-1-yl]vinyl]-3-ethyl-1,1-dimethyl-1H-benz[e]indol-3-ium 4-methylbenzenesulfonate
EINECS	Contact for details

Quality Control

Every batch of this cyanine dye is manufactured under strict quality control protocols to ensure consistency and performance. Our standard grade typically meets a purity specification of ≥95% (HPLC), with rigorous testing for identity, residual solvents, and heavy metals. A comprehensive Certificate of Analysis (COA) detailing lot-specific results is provided with each shipment. We can support development projects requiring custom purity grades or specific impurity profiles.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container should be kept in a desiccated environment to prevent moisture absorption, which can affect performance. For long-term storage, consider sealing under an inert atmosphere such as argon or nitrogen.

Specification

Item	Specification
Appearance	Dark green to blue-black solid
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residual Solvents (GC)	Meets ICH Q3C guidelines
Heavy Metals	≤ 20 ppm
λmax (Absorption)	Contact for details
Extinction Coefficient	Contact for details

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