4Mitsubishi Chemical Industries. Prophylactic and therapeutic composition for circulatory disorders and methold of treatment: US, 4857542 [P].1989-08- 15.
5Watanabe K, Morinaka Y, Iseki K, et al. Structure-activity relationship of 3-methyl-1-phenyl-2-pyraz-olin-5-one ( edaravone ) [ J ]. Redox Report,2003,8(3) : 151 - 155.
6Aron M A, Elvidge J A. Identification of O-cyanophenylhydrazine as 3- aminoindasole[J]. Chemistry & Industry, 1958,38:1234 - 1235.
7Kimata A, Nakagawa H, Ohyama R, et al. New series of antiprion compounds : Pyrazolone derivatives have the potent activity of inhibiting protease-resistent prion protein accumulation [J]. J Med Chem, 2007,50: 5053 - 5056.
8Milon W, Bullock, Hand J J. Synthesis of some substituted indole-3-butyric acids [J]. J Am Chem soc, 1956,78 : 5854 - 5857.
