Cyanine7.5 maleimide

Cat. # Quantity Price Lead time
16080 1 mg
$125
in stock
26080 5 mg
$260
in stock
46080 25 mg
$510
in stock
56080 50 mg
$895
in stock
66080 100 mg
$1490
in stock
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Thiol-reactive, near-infrared dye Cyanine7.5 for labeling of protein SH groups, an analog of Cy7.5® maleimide.

Most proteins contain sulfhydryl groups which can be selectively labeled with maleimides. With this reagent, these proteins can be converted to near-infrared (NIR) fluorescent conjugates. After it, the conjugates can be used in non-invasive live organism imaging to study distribution of the protein in tissues and organs.

Cyanine7.5 absorbance and emission spectra

Cyanine7.5 absorbance and emission spectra

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General properties

Appearance: green powder
Molecular weight: 807.46
CAS number: 2270866-73-2; 2270866-72-1
(inner salt)
Molecular formula: C51H55ClN4O3
Solubility: soluble in organic solvents (DMSO, DMF, dichloromethane), low solubility in water
Quality control: NMR 1H, HPLC-MS (95%)
Storage conditions: Storage: 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate.
MSDS: Download
Product specifications

Spectral properties

Excitation/absorption maximum, nm: 788
ε, L⋅mol−1⋅cm−1: 223000
Emission maximum, nm: 808
Fluorescence quantum yield: 0.10

Product citations

  1. Men, Y.; Peng, S.; Yang, P.; Jiang, Q.; Zhang, Y.; Shen, B.; Dong, P.; Pang, Z.; Yang, W. Biodegradable Zwitterionic Nanogels with Long Circulation for Antitumor Drug Delivery. ACS Applied Materials & Interfaces, 2018, 10(28), 23509–23521. doi: 10.1021/acsami.8b03943
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