Diether symmetrically substituted fluoresceins are provided having at least one anionic group and a linking functionality. Depending upon the site of substitution, the compounds can be used as fluorescers absorbing at wavelengths in excess of 500 nm or as quenchers, absorbing at wavelengths in excess of 500 nm and exhibiting substantially no fluorescence. The compounds find wide application, particularly as labels in fluorescent immunoassays.
提供了对称取代的
荧光素,其中至少具有一个阴离子基团和连接功能。根据取代位点,该化合物可用作吸收波长超过500nm的荧光剂或淬灭剂,吸收波长超过500nm且几乎不发出荧光。该化合物具有广泛应用,特别是作为荧光免疫测定中的标记物。