isdn was found to be the most potent ( median effective dose ( ed50 ) ; 1.5 x 10 ( -7 ) +/- 1.1 x 10 ( -7 ) m ) , followed by 2-ismn ( ed50 , 1.8 x 10 ( -6 ) +/- 9 x 10 ( -7 ) m ) and 5-ismn ( ed50 , 8.2 x 10 ( -6 ) +/- 3.6 x 10 ( -6 ) m ) .
C0022252
isdn
C0064079
5-ismn