1-Ethoxycarbonyl-2-carbamidoiminopyrrolidine chlorhydrate 1-Pyrrolidineacetic acid, 2-((aminocarbonyl)imino)-, ethyl ester, monohydrochloride 151602-31-2 Ethyl 2-((aminocarbonyl)imino)-1-pyrrolidineacetate monohydrochloride