Description

1-Ethyl-2-[(3-Ethyl-3H-Benzothiazol-2-Ylidene)Methyl]Quinolinium Iodide is a specialized cyanine dye salt, a high-value organic intermediate prized for its strong light-absorbing and fluorescent properties. This compound is critical for applications requiring precise optical characteristics and photostability. It is primarily utilized by manufacturers in the optical materials, imaging, and advanced research sectors for developing functional dyes and sensors.

Application

• Optical Material Synthesis: A key intermediate for manufacturing cyanine dyes used in optical filters, laser media, and non-linear optical materials.
• Fluorescent Probes & Sensors: Used in the development of fluorescent markers and chemosensors for biological imaging and diagnostic applications.
• Photographic Sensitizers: Acts as a spectral sensitizer in specialized photographic emulsions and photoconductive materials.
• Organic Electronics: Investigated for use in organic light-emitting diodes (OLEDs) and other photoelectronic devices due to its charge-transfer properties.
• Research & Development: Serves as a building block in academic and industrial R&D for novel dye chemistry and photophysical studies.

Basic Information

Product Name	1-Ethyl-2-[(3-Ethyl-3H-Benzothiazol-2-Ylidene)Methyl]Quinolinium Iodide
CAS No.	16025-99-3
Molecular Formula	C21H21IN2S
Molecular Weight	460.37 g/mol
Synonyms	1-Ethyl-2-[(3-ethyl-2(3H)-benzothiazolylidene)methyl]quinolinium iodide; Quinolinium, 1-ethyl-2-[(3-ethyl-2(3H)-benzothiazolylidene)methyl]-, iodide; 2-[(1-Ethyl-2(1H)-quinolinylidene)methyl]-3-ethylbenzothiazolium iodide; Cyanine dye intermediate; Quinolinium cyanine dye salt
EINECS	240-166-4

Quality Control

Our production of 1-Ethyl-2-[(3-Ethyl-3H-Benzothiazol-2-Ylidene)Methyl]Quinolinium Iodide adheres to stringent internal quality standards to ensure batch-to-batch consistency and high purity. Each lot is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). The product is light-sensitive and should be handled under appropriate conditions to prevent degradation.

Specification

Item	Specification
Appearance	Dark green to brown crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%

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