19135-17-2 21658-26-4 4-Nitrophenyl 4'-guanidinobenzoate 4-Nitrophenyl 4-guanidinobenzoate BENZOIC ACID, p-GUANIDINO-, p-NITROPHENYL ESTER BRN 2819493 Benzoic acid, 4-((aminoiminomethyl)amino)-, 4-nitrophenyl ester (9CI) NPGB Nitrophenyl p-guanidinobenzoate p-Guanidinobenzoic acid p-nitrophenyl ester p-Nitrophenyl p-guanidino-benzoate p-Nitrophenyl-p'-guanidino benzoate p-Nitrophenyl-p'-guanidinobenzoate