Description

Bis(Dithiarsolanyl)-Bis(Sulfobutyl) Cyanine 3 is a specialized near-infrared (NIR) fluorescent dye derivative, engineered for advanced bioconjugation and labeling applications. Its core value lies in its enhanced water solubility and photostability, derived from the sulfobutyl functional groups, making it superior for demanding in vivo imaging and diagnostic assays. This compound is critically needed by researchers and manufacturers in the pharmaceutical, biotechnology, and medical diagnostics sectors for developing next-generation targeted imaging agents and high-sensitivity detection kits.

Application

• Bioconjugation and Antibody Labeling: Covalent attachment to proteins, antibodies, and peptides for creating targeted fluorescent probes.
• In Vivo and In Vitro Imaging: Used as a contrast agent in near-infrared fluorescence (NIRF) imaging for deep-tissue visualization in preclinical research.
• Diagnostic Assay Development: Key component in the formulation of high-sensitivity lateral flow assays (LFAs), ELISA kits, and other immunoassays.
• Flow Cytometry and Cell Sorting: Fluorescent marker for cell surface receptor staining and intracellular tracking.
• Polymer and Nanoparticle Functionalization: Modification of polymeric carriers, dendrimers, and nanoparticles for theranostic applications.
• DNA/RNA Labeling and Sequencing: Fluorescent tag for nucleic acid probes used in genomics and molecular diagnostics.
• Material Science Research: Investigation of energy transfer processes and development of novel photonic materials.

Basic Information

Product Name	Bis(Dithiarsolanyl)-Bis(Sulfobutyl) Cyanine 3
CAS No.	946135-47-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Cy3-Sulfobutyl derivative; Bis-sulfobutyl Cy3; NIR dye-sulfonate; Heptamethine cyanine dye sulfobutyl ester; Fluorescent labeling reagent; Bioimaging agent; Diagnostic dye; CAS 946135-47-3
EINECS	Contact for details

Quality Control

Our Bis(Dithiarsolanyl)-Bis(Sulfobutyl) Cyanine 3 is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for absorbance/fluorescence verification, and functional testing for labeling efficiency. We provide a detailed Certificate of Analysis (COA) with every shipment, ensuring traceability and compliance with your research and manufacturing protocols.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below under desiccant for long-term stability. For short-term use, the product may be stored at 2-8°C. Allow the vial to equilibrate to room temperature in a dry environment before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	Dark green to blue-black solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Absorption Max (λmax)	Contact for details
Emission Max (λem)	Contact for details
Extinction Coefficient (ε)	Contact for details
Water Content (KF)	≤ 2.0%
Functional Activity (Labeling)	Conforms to reference standard

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