Description

( E )-4-((5-Carboxy-3,3-Dimethyl-1-Octyl-3H-Indolium-2-Yl)Methylene)-2-((E )-(3-Ethyl-1,1-Dimethyl-1H-Benzo[E]Indol-2(3H)-Ylidene)Methyl)-3-Oxocyclobut-1-Enolate is a sophisticated polymethine dye belonging to the cyanine or squaraine dye family, characterized by its extended conjugated system and zwitterionic structure. This compound is engineered for high-performance applications where exceptional photostability and strong near-infrared (NIR) absorption or fluorescence are critical. It serves as a vital advanced material for researchers and manufacturers in the fields of optical data storage, non-linear optics, and biomedical imaging. The product's unique electronic properties make it a key component in the development of next-generation photonic devices and sensitive diagnostic probes.

Application

• Optical Data Storage Media: As a high-stability recording dye for writable and rewritable optical discs (e.g., CD-R, DVD-R).
• Non-Linear Optical (NLO) Materials: A key chromophore for frequency doubling, optical limiting, and electro-optic modulation devices due to its large hyperpolarizability.
• Biomedical Imaging & Diagnostics: Utilized as a near-infrared (NIR) fluorescent probe or tag for in vivo imaging, flow cytometry, and immunoassay development.
• Laser Dyes & Optical Filters: Active medium for tunable dye lasers or as a component in selective optical filters and shutters.
• Photovoltaic & Solar Cell Research: Investigated as a photosensitizer in dye-sensitized solar cells (DSSCs) for light harvesting.
• Security Inks & Anti-Counterfeiting: Used in specialized inks for currency, documents, and high-value products due to its distinct optical properties.
• Academic & Industrial R&D: Serves as a building block or reference standard in synthetic chemistry and materials science research.

Basic Information

Product Name	( E )-4-((5-Carboxy-3,3-Dimethyl-1-Octyl-3H-Indolium-2-Yl)Methylene)-2-((E )-(3-Ethyl-1,1-Dimethyl-1H-Benzo[E]Indol-2(3H)-Ylidene)Methyl)-3-Oxocyclobut-1-Enolate
CAS No.	1240041-84-2
Molecular Formula	C46H54N2O4
Molecular Weight	698.94 g/mol
Synonyms	Squaraine Dye Derivative; Cyanine-Squaraine Hybrid Dye; NIR Squaraine Dye; 1-Octyl-2-((E)-2-((E)-3-ethyl-1,1-dimethyl-1,2-dihydro-3H-benzo[e]indol-2-ylidene)ethylidene)-5-carboxy-3,3-dimethyl-3H-indol-1-ium-4-olate; Benzo[e]indolium, 2-[2-[5-carboxy-1-octyl-3,3-dimethyl-2(3H)-indolylidene]ethylidene]-3-ethyl-1,1-dimethyl-, inner salt, reaction product with squaric acid; Optical Recording Dye 1240041-84-2
EINECS	Contact for details

Quality Control

Every batch of our advanced dye material is produced and controlled under a strict quality management system. We employ advanced analytical techniques including HPLC, NMR, and Mass Spectrometry to verify chemical identity, purity, and batch-to-batch consistency. A comprehensive Certificate of Analysis (COA) detailing purity, absorbance/fluorescence spectra, and impurity profile is provided with each shipment to ensure it meets your precise research or manufacturing specifications.

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 (moisture-sensitive) nature, the container should be kept in a desiccated environment. For long-term storage, consider sealing under an inert atmosphere such as argon or nitrogen to prevent degradation.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 95.0% (Area %)
Water Content (KF)	≤ 2.0 %
Residue on Ignition	≤ 0.5 %
Absorption Max (λmax)	Contact for details
Fluorescence Emission	Contact for details

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