Description

Sulfo Cy7 Carboxylic Acids(Methyl) CAS NO 1251915-04-4 is a functionalized near-infrared (NIR) cyanine dye derivative, engineered for superior aqueous solubility and conjugation efficiency. This compound is a critical building block for creating stable, fluorescent probes and labels with minimal aggregation in biological systems. It is essential for researchers and manufacturers in the biotechnology, pharmaceutical, and diagnostic sectors who require high-performance NIR imaging agents.

Application

• Bioconjugation and Probe Synthesis: Primary use for labeling antibodies, proteins, peptides, and oligonucleotides via its carboxylic acid group.
• In Vivo and In Vitro Imaging: Key component in developing NIR fluorescent probes for deep-tissue imaging, tumor targeting, and cellular tracking.
• Diagnostic Assay Development: Used in lateral flow assays (LFAs), ELISA, and other immunoassays requiring stable, bright NIR signals.
• Flow Cytometry and Microscopy: Conjugated to various biomolecules for high-sensitivity detection in cell sorting and imaging applications.
• Material Science and Sensor Fabrication: Incorporated into nanoparticles, polymers, and biosensors for photonic and sensing applications.
• Drug Delivery Research: Employed to label and track drug carriers, liposomes, and other delivery vehicles in preclinical studies.

Basic Information

Product Name	Sulfo Cy7 Carboxylic Acids(Methyl)
CAS No.	1251915-04-4
Molecular Formula	C45H51KN2O7S2 (Potassium salt form typical)
Molecular Weight	Contact for details
Synonyms	Sulfo-Cyanine7 carboxylic acid, methyl ester; Sulfo Cy7 ME; Cy7 sulfonated carboxylic acid methyl ester; 2-[(1E,3E)-5-[1,1-Dimethyl-3-(4-sulfonatobutyl)-1,3-dihydro-2H-benzo[e]indol-2-ylidene]-1,3-pentadien-1-yl]-1,1-dimethyl-3-(4-sulfonatobutyl)-1H-benzo[e]indol-3-ium-5-carboxylic acid methyl ester, potassium salt; NIR dye Sulfo-Cy7-COOH methyl ester; Hydrophilic Cy7 dye methyl ester
EINECS	Contact for details

Quality Control

Our Sulfo Cy7 Carboxylic Acids(Methyl) is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity, NMR for structural confirmation, and mass spectrometry. We provide a detailed Certificate of Analysis (COA) with every shipment, ensuring traceability and compliance with your research and manufacturing standards.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below in a dry environment. This product is hygroscopic (moisture-sensitive). Allow the vial to warm to room temperature in a desiccator before opening to prevent condensation and moisture uptake.

Specification

Item	Specification
Appearance	Dark green to blue-green solid
Identification (HPLC)	Conforms to reference standard
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥95% (Area % at λ max)
Water Content (KF)	≤5.0%
Extinction Coefficient (ε)	≥200,000 L·mol⁻¹·cm⁻¹ (at ~750 nm in aqueous buffer)

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