2,7-Dialkylfluorescein derivatives and their use in fluorescence immunoassays
申请人:SYVA COMPANY
公开号:EP0025912A1
公开(公告)日:1981-04-01
Fluorescent antigen conjugates are provided comprising antigens covalantly bonded to at least one 2,7-dialiphatic substituted-9-phenyl-6-hydroxy-3H-xanthen-3-one, wherein the 1- and 8-positions are unsubstituted. Also provided are novel fluorescent compounds absorbing at wavelengths in excess of 500 nm, having active functionalities for linking to the antigen. Finally, methods are provided for analyzing antigens in serum, whereby serum interference is avoided.