Succinimidyl 4-formylbenzoate is a heterobifunctional building block.1,2 It has been used in the conjugation of oligonucleotides to antibodies for protein detection, as well as in the synthesis of fluorescent BODIPY-etoposide.
1.Kozlov, I.A., Melnyk, P.C., Stromsborg, K.E., et al.Efficient strategies for the conjugation of oligonucleotides to antibodies enabling highly sensitive protein detectionBiopolymers73(5)621-630(2004) 2.Lazo, J.S., Li, T., Woo, E.S., et al.Chemical synthesis and biological activity of a novel fluorescent etoposide derivativeBiochem. Pharmacol.53(5)15-22(1997)