Description

Ethyl 3-Ethyl-2-Methylbenzoselenazolium Sulphate is a specialized quaternary benzoselenazolium salt, a key intermediate in the synthesis of functional dyes and photosensitizers. Its value lies in its role as a precursor for cyanine and related dyes, which are critical for applications in optical data storage, biomedical imaging, and photographic sensitization. This compound is essential for R&D laboratories and manufacturers in the advanced materials, biotechnology, and specialty chemical sectors seeking to develop or produce next-generation light-absorbing and emitting agents.

Application

• Photosensitizer Synthesis: A crucial building block for the production of cyanine dyes and other selenium-containing photosensitizers used in photodynamic therapy (PDT).
• Optical Recording Media: Serves as an intermediate in the manufacture of dyes for CD-R, DVD-R, and other optical data storage technologies.
• Biomedical Imaging Probes: Used in the research and development of near-infrared (NIR) fluorescent dyes and contrast agents for diagnostic imaging.
• Photographic Sensitizers: Acts as a chemical intermediate in the synthesis of spectral sensitizers for silver halide photographic emulsions.
• Nonlinear Optical Materials: Investigated as a precursor for organic compounds with potential applications in photonics and optoelectronics.
• Research & Development: A valuable reagent for academic and industrial research in organic chemistry, materials science, and dye chemistry.

Basic Information

Product Name	Ethyl 3-Ethyl-2-Methylbenzoselenazolium Sulphate
CAS No.	66142-22-1
Molecular Formula	C₁₂H₁₇NO₄S₂Se
Molecular Weight	382.31 g/mol
Synonyms	3-Ethyl-2-methylbenzoselenazolium ethyl sulfate; Ethyl 3-ethyl-2-methylbenzoselenazolium sulfate; 2-Methyl-3-ethylbenzoselenazolium ethyl sulfate; Benzene, 1,2-dimethyl-3-ethyl-, selenazolium salt; Selemazolium ethyl sulfate derivative; Cyanine dye intermediate CAS 66142-22-1; Photosensitizer precursor 66142-22-1
EINECS	Contact for details

Quality Control

Our Ethyl 3-Ethyl-2-Methylbenzoselenazolium Sulphate is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity, NMR and IR for structural confirmation, and elemental analysis. We provide a detailed Certificate of Analysis (COA) with every shipment, ensuring traceability and compliance with your research or manufacturing specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, handling and packaging should minimize exposure to direct light.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 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.