2-(((4-(Phenylazo)phenyl)methyl)sulphonyl)ethyl S-(acetamidomethyl)-N-(N-(N-(N-L-threonyl-3-phenyl-L-alanyl)-L-threonyl)-L-seryl)-L-cysteinate, mono(perfluoroacetate) 76408-68-9 EINECS 278-447-8