1-Piperidinyloxy, 4,4'-(1,2-cyclopropanediyldiimino)bis(2,2,6,6-tetramethyl-, trans- 95211-87-3 N,N'-Bis(2,2,6,6-tetramethyl-1-oxyl-4-piperidinyl)-1,2-diaminocyclopropane Ro 31-2269 Ro 31-2778 Ro-31-2269