2,2,6,6-Tetramethyl-N-(2,2,6,6-tetramethyl-4-piperidinyl)-4-piperidinamine 34887-26-8 4-Piperidinamine, 2,2,6,6-tetramethyl-N-(2,2,6,6-tetramethyl-4-piperidinyl)- CG 23-235 TK 13153