Description

2-[[4,5-Diphenyl-3-(4-Sulphonatobutyl)Thiazol-2(3H)-Ylidene]Methyl]-3-Ethyl-5-[(1-Ethylquinolin-4(1H)-Ylidene)Ethylidene]-4-Oxothiazolium is a specialized, high-value organic dye intermediate belonging to the cyanine dye class, prized for its strong near-infrared (NIR) absorption and fluorescence properties. Its complex molecular structure is engineered for precise photophysical characteristics, making it a critical component for advanced optical applications. This compound is essential for manufacturers and R&D teams in the photonics, biomedical imaging, and security printing industries seeking to develop next-generation functional materials.

Application

• NIR Fluorescent Dyes & Probes: A key precursor for synthesizing cyanine dyes used in bioimaging, flow cytometry, and in vivo diagnostic assays.
• Optical Data Storage: Utilized in the formulation of recording layers for high-density optical discs and holographic media.
• Laser & Photovoltaic Materials: Serves as a photosensitizer or light-harvesting component in dye-sensitized solar cells (DSSCs) and tunable laser systems.
• Security Inks & Anti-Counterfeiting: Incorporated into inks for banknotes, certificates, and product packaging due to its unique, difficult-to-replicate optical signature.
• Non-Linear Optics (NLO): Used in research and development of materials for optical limiting, switching, and frequency conversion.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer candidate for targeted cancer treatments.

Basic Information

Product Name	2-[[4,5-Diphenyl-3-(4-Sulphonatobutyl)Thiazol-2(3H)-Ylidene]Methyl]-3-Ethyl-5-[(1-Ethylquinolin-4(1H)-Ylidene)Ethylidene]-4-Oxothiazolium
CAS No.	93857-86-4
Molecular Formula	C44H41N3O4S3+ • X-
Molecular Weight	~ 760.0 g/mol (for cation)
Synonyms	IR-1061 Analog; NIR Cyanine Dye Intermediate; 2-((4,5-Diphenyl-3-(4-sulfonatobutyl)-4,5-dihydrothiazol-2(3H)-ylidene)methyl)-3-ethyl-5-((1-ethyl-1,4-dihydroquinolin-4-ylidene)ethylidene)-4-oxothiazol-1-ium; Sulfo-butyl Cyanine Dye; Quinoline-Thiazole Cyanine Dye; Heptamethine Cyanine Salt; Light-sensitive cyanine dye intermediate.
EINECS	Contact for details

Quality Control

Every batch of our cyanine dye intermediates is produced and analyzed under strict quality management protocols. We employ advanced analytical techniques including HPLC, NMR, and mass spectrometry to ensure structural identity, high purity, and batch-to-batch consistency. A comprehensive Certificate of Analysis (COA) detailing purity, absorbance/fluorescence maxima, and impurity profiles is provided with each shipment to support your quality assurance and regulatory needs.

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 (store away from light). For long-term storage, consider inert atmosphere conditions to preserve optimal performance.

Specification

Item	Specification
Appearance	Dark green to blue-black solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
λabs max (in solvent)	Contact for details
λflu max (in solvent)	Contact for details
Loss on Drying	≤ 2.0 %
Residue on Ignition (Sulfated Ash)	≤ 1.0 %

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