申请人:Boyle Jessica
                            
                            
                                公开号:US20080161288A1
                            
                            
                                公开(公告)日:2008-07-03
                            
                            Compounds of formula (I)
and pharmaceutically acceptable salts thereof are agonists at the beta-2 adrenoceptor. They are useful as feed additives for livestock animals.
                            化学式为(I)的化合物及其药学上可接受的盐是β-2
肾上腺素受体激动剂。它们可用作家畜饲料添加剂。