JF646, Tetrazine

CAS NO.：2042192-00-5
Empirical Formula: C38H35N7O3Si
Molecular Weight: 665.83
Update Date: 2026-04-24 14:58:50

What is JF646, Tetrazine?

Biological Activity

Janelia Fluor? 646, Tetrazine is a red fluorescent dye; supplied with a tetrazine reactive handle for copper-free click chemistry. Suitable for confocal fluorescent imaging, super-resolution microscopy (SRM) techniques such as dSTORM (live and fixed cells) and STED imaging. Can be multiplexed for two-color imaging with Janelia Fluor;® 549 Tetrazine . Also suitable for flow cytometry. Cell-permeable. Excitation maximum = 646 nm; emission maximum = 664 nm. Quantum yield = 0.54, Max. extinction coefficient = 152,000 M-1cm-1 (measured in ethanol plus 0.1% TFA); A280 correction factor is 0.19.

Storage

Store at -20°C

Properties of JF646, Tetrazine

solubility	Soluble to 20 mM in DMSO
form	Solid
color	Pink to red

Safety information for JF646, Tetrazine

Computed Descriptors for JF646, Tetrazine

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