Description

Benzothiazolium, 5-chloro-2-[2-[[5-chloro-3-(3-sulfopropyl)-2(3H)-benzothiazolylidene]methyl]-1-butenyl]-3- (3-sulfopropyl)-, inner salt, compd. with N,N-diethylethanamine is a specialized cyanine dye intermediate with a complex polymethine structure. This compound is valued for its strong light-absorbing and fluorescent properties, making it a critical component in advanced optical applications. It is primarily sought by manufacturers in the photographic, laser dye, and biomedical imaging sectors for the synthesis of high-performance sensitizers and labels.

Application

• Photosensitizer Intermediate: A key precursor in the synthesis of cyanine dyes used in silver halide photographic films and papers.
• Laser Dye Manufacturing: Used to produce near-infrared (NIR) absorbing and emitting dyes for tunable dye lasers and optical gain media.
• Biomedical Imaging Probes: Serves as a building block for fluorescent labels and contrast agents in bioassays and diagnostic imaging.
• Optical Data Storage: A component in the development of dyes for recordable CDs (CD-R) and other optical storage media.
• Nonlinear Optical Materials: Investigated for use in the fabrication of materials with specific light-modulating properties.
• Textile Dyeing: Potential application in the synthesis of specialized dyes for synthetic fibers requiring specific lightfastness.

Basic Information

Item	Detail
Product Name	Benzothiazolium, 5-chloro-2-[2-[[5-chloro-3-(3-sulfopropyl)-2(3H)-benzothiazolylidene]methyl]-1-butenyl]-3- (3-sulfopropyl)-, inner salt, compd. with N,N-diethylethanamine
CAS No.	27268-50-4
Molecular Formula	C30H39Cl2N3O6S3
Molecular Weight	721.82 g/mol
Synonyms	5-Chloro-2-[2-[(5-chloro-3-(3-sulfopropyl)-2(3H)-benzothiazolylidene)methyl]-1-butenyl]-3-(3-sulfopropyl)benzothiazolium hydroxide, inner salt, compound with triethylamine; Cyanine dye intermediate; Triethylamine salt of a sulfonated benzothiazolium cyanine dye; NK-2014 (potential trade name); NIR cyanine dye precursor; 27268-50-4; Benzothiazolium, inner salt, compd. with N,N-diethylethanamine
EINECS	Contact for details

Quality Control

Our production of this cyanine dye intermediate adheres to stringent quality protocols to ensure batch-to-batch consistency and purity for sensitive optical applications. Every lot is characterized by advanced analytical techniques including HPLC, NMR, and mass spectrometry to confirm identity and impurity profile. A comprehensive Certificate of Analysis (COA) detailing purity, absorbance maxima, and other critical parameters is provided with each shipment.

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 material is hygroscopic (moisture-sensitive) and light-sensitive; prolonged exposure to air, moisture, or light may affect its performance characteristics.

Specification

Item	Specification
Appearance	Dark green to blue-black powder or crystals
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Area %)
Loss on Drying	≤ 2.0 %
Absorbance Maxima (λmax)	Specified range provided per grade
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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