Description

1,1,2-Trimethyl-3-(4-Sulfobutyl)-1H-Benz[E]Indolium Hydroxide, Inner Salt is a specialized zwitterionic dye intermediate, valued for its unique sulfobutyl-substituted benz[e]indolium structure. This compound is critical for synthesizing near-infrared (NIR) fluorescent dyes and cyanine dyes, which require high purity and consistent performance. It is primarily needed by manufacturers in the biotechnology, medical diagnostics, and advanced materials sectors for applications in bioimaging, optical sensors, and laser technology.

Application

• Key Intermediate for NIR Cyanine Dyes: Serves as a crucial building block for synthesizing heptamethine and other cyanine dyes used in bioimaging and fluorescence labeling.
• Fluorescent Probe Synthesis: Used in the production of sensitive fluorescent probes for DNA detection, protein labeling, and cellular imaging assays.
• Optical Sensor Manufacturing: Incorporated into the development of chemical sensors and biosensors that operate in the near-infrared spectrum.
• Laser Dye and Photonic Materials: Applied in the formulation of dyes for tunable lasers and the creation of advanced photonic and optoelectronic materials.
• Research & Development: Utilized in academic and industrial R&D for exploring new fluorescent markers and imaging agents.

Basic Information

Product Name	1,1,2-Trimethyl-3-(4-Sulfobutyl)-1H-Benz[E]Indolium Hydroxide, Inner Salt
CAS No.	63149-24-6
Molecular Formula	C19H25NO3S
Molecular Weight	347.47 g/mol
Synonyms	3-(4-Sulfobutyl)-1,1,2-trimethyl-1H-benz[e]indolium hydroxide, inner salt; 1,1,2-Trimethyl-3-(4-sulfobutyl)-1H-benz[e]indolium, inner salt; Benz[e]indolium, 1,1,2-trimethyl-3-(4-sulfobutyl)-, hydroxide, inner salt; IR-780 related intermediate; NIR dye precursor; Cyanine dye sulfonate salt; Sulfobutyl benzindolium zwitterion
EINECS	Contact for details

Quality Control

Our production of 1,1,2-Trimethyl-3-(4-Sulfobutyl)-1H-Benz[E]Indolium Hydroxide, Inner Salt adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity, essential for sensitive optical applications. Each lot undergoes comprehensive analysis including HPLC for purity and spectroscopic identification (NMR, IR). Certificates of Analysis (COA) detailing all specifications are provided with every 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed in a dry environment to prevent degradation. For long-term storage, consider using desiccants.

Specification

Item	Specification
Appearance	Green to dark green crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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