1-Piperazineacetamide, N-cyclohexyl-, monohydrochloride 64204-55-3 91290-76-5 CO 1063 EINECS 293-827-3 Esaprazole hydrochloride Hexaprazol hydrochloride N-((N-Cyclohexylcarbamoyl)methyl)piperazine hydrochloride N-Cyclohexyl-1-piperazineacetamide monohydrochloride N-Cyclohexylpiperazine-1-acetamide monohydrochloride