Atto 612Q is a new quencher for fluorescence characterized by high molecular absorption (114.000). Atto 612Q is characterized by a high photostability and thermostability. It is slightly hydrophilic, with excellent solubility in polar solvents as DMF or DMSO. Maleimides are well suited for coupling to thiol groups. This is similar to iodacetamides, but maleimides do react more thiol selective. They do not show significant reaction with histidine or methionine. Hydrolysis of maleimides to a mixture of isomeric nonreactive maleamic acids can compete significantly with thiol modification, particularly above pH 8. Maleimides may be used for labeling of amines, which usually requires a higher pH than reaction of maleimides with thiols.

This product is for Research use only. In case of intended commercialization, please contact the IP-holder (ATTO-TEC GmbH, Germany) for licensing.