申请人:Sandoz, Inc.
公开号:US04228166A1
公开(公告)日:1980-10-14
Ketone derivatives of 4,5-dihydro-3(2H)-pyridazinones of the formula ##STR1## where R.sub.1 is halo having an atomic weight of from 19 to 36, and R.sub.2 is a branched chain lower alkyl having 3 to 4 carbon atoms are useful as central nervous system depressants, in particular, as muscle relaxants.
4,5-二氢-3(2H)-吡啶酮衍生物的酮衍生物的化学式为##STR1##其中R.sub.1是卤素,其原子量为19至36,R.sub.2是具有3至4个碳原子的支链低碳烷基,可用作中枢神经系统抑制剂,特别是作为肌肉松弛剂。