great northern , cytokinins bearing saturated side chains ( n ( 6 ) -isopentyladenine , n ( 6 ) -isopentyladenosine , dihydrozeatin , and ribosyldihydrozeatin ) were always more active than the corresponding unsaturated analogs ( n ( 6 ) - [ delta ( 2 ) -isopentenyl ] adenine , n ( 6 ) - [ delta ( 2 ) -isopentenyl ] adenosine , zeatin , and ribosylzeatin ) .
C0010815
cytokinins
C0043456
zeatin