发明授权
US2940969A 1-substituted-4-[3-(9-xanthylidene)-propyl] piperazines and 1-substituted-4-[3-(10-thiaxanthylidene) propyl]-piperazines 失效
1-取代-4- [3-(9-亚苄基) - 丙基]哌嗪和1-取代-4- [3-(10-三亚甲基)丙基] - 哌嗪

1-substituted-4-[3-(9-xanthylidene)-propyl] piperazines and 1-substituted-4-[3-(10-thiaxanthylidene) propyl]-piperazines
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