1-Diethylcarbamyl-4-methylpiperazine hydrochloride 1-Piperazinecarboxamide, N,N-diethyl-4-methyl-, hydrochloride 1-Piperazinecarboxamide, N,N-diethyl-4-methyl-, monohydrochloride 5348-97-0 Diethylcarbamazine hydrochloride NSC1364