(+/-)-2-Amino-N-(2-amidinoethyl)-1-pyrroline-5-carboxamide 155-38-4 2H-Pyrrole-2-carboxamide, 5-amino-N-(3-amino-3-iminopropyl)-3,4-dihydro-, (S)- 46329-28-6 N-(2-Amidinoethyl)-5-imino-2-pyrrolidinecarboxamide Noformicin Noformycin