normorphine , [ d-ala2 , mephe4 , gly5 ] enkephalin-ol ( dago ) , [ d-ala2 , mephe4 , met ( 0 ) 5 ] enkephalin-ol ( fk33824 ) , dynorphin a and tifluadom had no effect at concentrations up to 10 microm .
C0525773
dago
C0014298
enkephalin