Description

3-Ethyl-2-[3-(3-Ethyl-5,6-Dimethyl-3H-Benzothiazol-2-Ylidene)-2-Methylprop-1-Enyl]-5-Phenylbenzoxazolium p-Toluenesulphonate CAS NO 94158-33-5 is a high-purity, specialized organic salt belonging to the cyanine dye family, valued for its strong light-absorbing and fluorescent properties. This compound is critical for applications requiring precise optical characteristics and high chemical stability. It is primarily sought after by manufacturers and research institutions in the photonics, imaging, and advanced materials sectors.

Application

• Optical Data Storage Media: As a key dye component in recordable (R) and rewritable (RW) optical discs, such as CDs and DVDs.
• Laser Dyes & Optical Filters: Used in the formulation of tunable laser dyes and the manufacture of specialized optical filters for scientific and industrial equipment.
• Non-Linear Optical (NLO) Materials: A functional material for developing advanced NLO crystals and polymers used in telecommunications and photonic computing.
• Biomedical Imaging & Staining: Acts as a fluorescent probe or stain in biological assays, cell imaging, and diagnostic applications.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer in medical research for targeted cancer therapies.
• Solar Cell & Sensor Development: Incorporated into the active layers of organic photovoltaic (OPV) devices and chemical sensors due to its photoconductive properties.
• Security Inks & Dyes: Utilized in high-security printing, anti-counterfeiting tags, and currency due to its distinct spectral signature.

Basic Information

Product Name	3-Ethyl-2-[3-(3-Ethyl-5,6-Dimethyl-3H-Benzothiazol-2-Ylidene)-2-Methylprop-1-Enyl]-5-Phenylbenzoxazolium p-Toluenesulphonate
CAS No.	94158-33-5
Molecular Formula	C38H38N2O4S2
Molecular Weight	650.84 g/mol
Synonyms	3-Ethyl-2-[3-(3-ethyl-5,6-dimethylbenzothiazol-2(3H)-ylidene)-2-methyl-1-propenyl]-5-phenylbenzoxazolium 4-methylbenzenesulfonate; Cyanine dye 5; NK-2012; Oxazole yellow analogue; Benzoxazolium, 3-ethyl-2-[3-(3-ethyl-5,6-dimethyl-2(3H)-benzothiazolylidene)-2-methyl-1-propenyl]-5-phenyl-, 4-methylbenzenesulfonate; p-Toluenesulfonate salt of a benzothiazole-benzoxazole cyanine dye
EINECS	Contact for details

Quality Control

Our production of 3-Ethyl-2-[3-(3-Ethyl-5,6-Dimethyl-3H-Benzothiazol-2-Ylidene)-2-Methylprop-1-Enyl]-5-Phenylbenzoxazolium p-Toluenesulphonate adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity, spectroscopic identification (NMR, IR), and residual solvent analysis to ensure it meets precise customer specifications and internal standards. Certificates of Analysis (COA) detailing all test results are 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 product is hygroscopic (moisture-sensitive) and must be kept under dry, inert conditions to prevent degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark green to black crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Purity (HPLC)	≥ 98.0% (Area %)
Water Content (KF)	≤ 1.0%
Residual Solvents (GC)	Meets ICH guidelines
Heavy Metals	≤ 20 ppm
Absorption Maxima	As per customer requirement

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