ethyne-1,2-diylbis(2,2,6,6-tetramethyl-3,6-dihydropyridine-4,1(2H)-diyl) dibenzoate

4-ethynyltriisopropylsilyl-2,2,6,6-tetramethyl-3,4-dehydro-piperidine-1-oxyl

2,2,8,8-tetramethyl-1-(1-phenylethoxy)-5-azocanol

Acetic acid 4-[2-(1-acetoxy-4-hydroxy-2,2,6,6-tetramethyl-piperidin-4-ylethynyl)-phenylethynyl]-4-hydroxy-2,2,6,6-tetramethyl-piperidin-1-yl ester

buta-1,3-diyne-1,4-diylbis(2,2,6,6-tetramethyl-3,6-dihydropyridine-4,1(2H)-diyl) dibenzoate