Description

3H-Indolium, 1-Ethyl-2,3,3-Trimethyl- is a versatile indole-derived cationic dye intermediate with significant commercial importance. Its value lies in its role as a key precursor for synthesizing cyanine dyes, which are critical for high-sensitivity detection in life sciences and advanced materials. This compound is essential for manufacturers and R&D teams in the biotechnology, analytical chemistry, and specialty chemical sectors seeking to develop novel fluorescent probes, optical sensors, and photographic sensitizers.

Application

• Cyanine Dye Synthesis: Serves as a foundational building block for producing heptamethine and other cyanine dyes used in bioimaging and diagnostics.
• Fluorescent Labeling Reagents: A critical intermediate for creating fluorescent tags and probes for nucleic acid (DNA/RNA) and protein detection.
• Optical Sensors: Used in the development of chemical sensors and indicators for pH, metal ions, and other analytes.
• Photographic Sensitizers: Employed in the formulation of specialized photographic emulsions and films.
• Nonlinear Optical Materials: Investigated for use in the research and development of materials for photonics and laser technology.
• Academic & Industrial Research: A valuable reagent for synthetic organic chemistry research and new dye development projects.

Basic Information

Product Name	3H-Indolium, 1-Ethyl-2,3,3-Trimethyl-
CAS No.	42846-17-3
Molecular Formula	C13H18N+
Molecular Weight	188.29 g/mol
Synonyms	1-Ethyl-2,3,3-trimethyl-3H-indolium; 1-Ethyl-2,3,3-trimethylindolenium; 2,3,3-Trimethyl-1-ethyl-3H-indolium; Indolium, 1-ethyl-2,3,3-trimethyl-; Fischer's Base Salt; Fischer Base Ethyl Salt; 1-Ethyl-2,3,3-trimethylindoleninium
EINECS	Contact for details

Quality Control

Our production of 3H-Indolium, 1-Ethyl-2,3,3-Trimethyl- adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, identity, and impurity profiles. Our quality systems are designed to meet the exacting standards required for fine chemical synthesis and advanced material development.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials. The container should be kept tightly sealed to prevent contamination and moisture absorption.

Specification

Item	Specification
Appearance	Light yellow to brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm

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