Description

5,5'-Diphenyl-9-Ethyl-3-(Eth-2-Ylsulfuric Acid)-3'-(2-Sulfato-Eth-1-Yl)Carbocyanine, Inner Salt is a specialized, water-soluble cyanine dye derivative. This compound is valued for its strong near-infrared (NIR) absorption and fluorescence properties, making it a critical functional material for advanced research and development. It is primarily sought by manufacturers and researchers in the biotechnology, diagnostic, and advanced materials sectors for applications requiring precise optical characteristics.

Application

• Fluorescent Labeling and Probes: Used as a covalent label for biomolecules (e.g., proteins, nucleic acids) in fluorescence microscopy, flow cytometry, and bioassays.
• Optical Imaging Agents: A key component in the development of contrast agents for in vivo and in vitro near-infrared (NIR) fluorescence imaging.
• Laser Dyes and Photonics: Employed in the formulation of tunable dye lasers and other photonic devices due to its specific absorption/emission profile.
• Sensor Development: Integrated into chemical and biological sensors where its fluorescence signal changes in response to specific analytes.
• Non-Linear Optical Materials: Investigated for use in materials requiring specific light-modulating properties for telecommunications and data storage.
• Photodynamic Therapy (PDT) Research: Explored as a potential photosensitizer in preclinical research for targeted cancer therapies.

Basic Information

Product Name	5,5'-Diphenyl-9-Ethyl-3-(Eth-2-Ylsulfuric Acid)-3'-(2-Sulfato-Eth-1-Yl)Carbocyanine, Inner Salt
CAS No.	27746-90-3
Molecular Formula	C37H35N2O7S2- • Na+ (or equivalent salt form)
Molecular Weight	~706.81 g/mol (for sodium salt form)
Synonyms	DTDC; Sulfo-Cy5 NHS ester precursor; 5,5'-Diphenyl-3,3'-disulfonatopropyl-9-ethylcarbocyanine inner salt; Cy5 sulfonate derivative; NIR-664 dye analog; Benz[e]indolium, 2-[5-[1,3-dihydro-3,3-dimethyl-1-(2-sulfoethyl)-2H-benz[e]indol-2-ylidene]-1,3-pentadien-1-yl]-3-ethyl-1-(2-sulfatoethyl)-, inner salt; Carbocyanine dye, sulfo-Cy5 type; 27746-90-3
EINECS	Contact for details

Quality Control

Every batch of our cyanine dyes is produced and analyzed under strict quality management protocols. We employ advanced analytical techniques including HPLC, NMR, and mass spectrometry to ensure high purity and consistent batch-to-batch performance. A comprehensive Certificate of Analysis (COA) detailing identity, purity (HPLC assay), absorbance/fluorescence maxima, and other critical parameters is provided with each shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This product is light-sensitive (store away from light) and should be handled under appropriate conditions to prevent degradation. For long-term storage, consider desiccation.

Specification

Item	Specification
Appearance	Dark green to blue-green powder
Identification (HPLC)	Conforms to reference standard
Identification (UV-Vis)	λmax conforms (typically ~650-670 nm)
Purity (HPLC)	≥ 95.0% (Area %)
Water Content (KF)	≤ 5.0 %
Residue on Ignition	≤ 1.0 %
Absorbance Spectrum	Provided in COA
Fluorescence Spectrum	Provided in COA

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