(2,2,6,6-tetramethylpiperidin-4-ylidene)hydrazine

2,2,3,7,7,9,9-heptamethyl-4-oxido-1,8-diaza-4-azoniaspiro[4.5]dec-3-ene

3-(2,2,6,6-tetramethyl-4-oxopiperidin-1-yl)prop-2-enenitrile

trans-N-β-triacetoneaminoacrylonitrile

1-benzyl-2,2,6,6-tetramethylpiperidin-4-one