1-(2-Benzofuranylcarbonyl)-4-(phenylmethyl)piperazine monohydrochloride 41716-84-1 41717-30-0 Befuraline hydrochloride DIV 154 N-(Benzo(b)furan-2-ylcarbonyl)-N'-benzylpiperazine hydrochloride NSC 312899 Piperazine, 1-(2-benzofuranylcarbonyl)-4-(phenylmethyl)-, monohydrochloride