Description

Cy7.5 Acid(Mono So3) is a near-infrared (NIR) fluorescent dye derivative functionalized with a carboxylic acid group and a single sulfonate moiety. This unique structure provides excellent water solubility and facilitates bioconjugation, making it a critical component for advanced bioimaging and diagnostic applications. It is essential for researchers and manufacturers in the fields of life sciences, medical diagnostics, and pharmaceutical development who require high-performance, stable labeling agents for in vivo and in vitro studies. The compound is supplied with a guaranteed high purity to ensure consistent and reliable performance in sensitive assays.

Application

• Fluorescent Labeling of Biomolecules: Conjugation to antibodies, peptides, proteins, and oligonucleotides for detection and imaging.
• In Vivo Imaging Probes: Development of targeted contrast agents for non-invasive deep-tissue imaging in preclinical research.
• Flow Cytometry & Cell Sorting: Used as a fluorescent tag for cell surface marker analysis and population sorting.
• Microarray & Biochip Fabrication: Immobilization onto sensor surfaces for high-throughput screening and diagnostic devices.
• Fluorescence Microscopy: Staining of cellular structures and tracking of biological processes due to its NIR emission, which minimizes autofluorescence.
• Pharmaceutical Research: Tracing drug delivery pathways and studying pharmacokinetics using labeled compounds.

Basic Information

Product Name	Cy7.5 Acid(Mono So3)
CAS No.	181934-09-8
Molecular Formula	C44H49N2O7S2+ • (Counterion)-
Molecular Weight	Contact for details
Synonyms	Cy7.5 carboxylic acid (monosulfonate); 1H-Benz[e]indolium, 2-[7-[1,3-dihydro-3,3-dimethyl-1-(4-sulfobutyl)-2H-benz[e]indol-2-ylidene]-1,3,5-heptatrienyl]-3,3-dimethyl-1-(4-carboxybutyl)-, inner salt; Cyanine7.5 acid monosulfonate; Sulfo-Cy7.5 carboxylic acid; NIR dye Cy7.5 acid; Cy7.5™ derivative acid (mono-SO3); 2-[(1E,3E,5E,7E)-7-[1-(4-Carboxybutyl)-3,3-dimethyl-1,3-dihydro-2H-benz[e]indol-2-ylidene]hepta-1,3,5-trien-1-yl]-3,3-dimethyl-1-(4-sulfonatobutyl)-1H-benz[e]indol-3-ium; Near-infrared fluorescent dye acid
EINECS	Contact for details

Quality Control

Our Cy7.5 Acid(Mono So3) is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, NMR and MS for structural confirmation, and spectrophotometry to verify optical properties. We provide a detailed Certificate of Analysis (COA) with every shipment, ensuring traceability and compliance with research-grade specifications. Our quality commitment supports your need for reproducible and reliable results in critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C (refrigerated) or as indicated on the label. The product is hygroscopic (moisture-sensitive) and light-sensitive; desiccants are recommended for long-term storage. Allow the sealed vial to equilibrate to room temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	Dark green to blue-black solid
Identification (HPLC)	Conforms to reference standard
Identification (UV-Vis)	λmax: 788 ± 5 nm
Purity (HPLC)	≥ 95.0%
Single Largest Unknown Impurity (HPLC)	≤ 1.0%
Water Content (KF)	≤ 5.0%
Solubility	Freely soluble in water, DMSO, DMF
Extinction Coefficient (ε)	≥ 200,000 M-1cm-1 at λmax

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