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Cy7 Methyltetrazine (CCT-1027)

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Description

Methyltetrazine-activated Cy7 dye that reacts with TCO-containing compounds via a Inverse-Electron-Demand Diels-Alder reaction to form a stable covalent bond and does not require Cu-catalyst or elevated temperatures. The inverse-electron demand Diels-Alder cycloaddition reaction of TCO with tetrazines is a bioorthogonal reaction that possesses exceptional kinetics (k > 800 M-1 s-1) and selectivity. Such excellent reaction rate constants are unparalleled by any other bioorthogonal reaction pair described to date.

Cy7 Methyltetrazine is a bright and photostable near-IR probe that spectrally similar to Alexa Fluor® 750, DyLight® 750, and IRDye® 750 dye. The Cy7 Methyltetrazine is water-soluble, hydrophilic dye often a reagent of choice for assay where minimal non-specific binding and exceptional brightness is required. The fluorescence of Cy7 Methyltetrazine is pH insensitive from pH 4 to pH 10 and produces minimal autofluorescence of biological specimens in this region of the spectrum. Fluorescence of this long-wavelength Cyanine dye is not visible to the human eye but is readily detected by most imaging systems.

Specifications

Unit Size1 mg, 5 mg, 25 mg
Abs/Em Maxima753/775 nm
Extinction Coefficient
255,000
Spectrally Similar DyesAlexa Fluor® 750, IRDye® 750, CF® 750 Dye, DyLight® 750
Molecular weight1184.42
CASN/A
SolubilityWater, DMSO, DMF, MeOH
Purity>95% (HPLC)
AppearanceDark green solid
Storage Conditions-20°C. Desiccate
Shipping ConditionsAmbient temperature

Abs/Em Spectra

Cy Cy

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