| p-guanidino-benzoic aci p-nitrophenyl ester |
| 4-nitrophenyl 4'-guanidinobenzoate |
| 4-nitrophenyl 4-guanidinobenzoate |
| 4-((aminoiminomethyl)amino)-benzoic aci 4-nitrophenyl ester |
| nitrophenyl p-guanidinobenzoate |
| npgb |
| p-guanidinobenzoic acid p-nitrophenyl ester |
| p-nitrophenyl p'-guanidinobenzoate |
| p-nitrophenyl p-guanidino-benzoate |
