Synonyms: Piperidinooxy,4-hydroxy-2,2,6,6-tetramethyl-, 3-(1-aziridinyl)propionate (ester) (8CI);1-Aziridinepropionic acid, ester with4-hydroxy-2,2,6,6-tetramethylpiperidinooxy (8CI); 2,2,6,6-Tetramethyl-4-(b-N-ethyleneiminopropionyl)oxypiperidine-1-oxyl;2,2,6,6-Tetramethyl-4-[b-(N-ethylenimino)propionyloxy]piperidinooxy; 2,2,6,6-Tetramethyl-4-[b-(N-ethylenimino)propionyloxy]piperidinooxyradical; 2,2,6,6-Tetramethyl-4-[b-ethyleniminopropionyl]oxypiperidine-1-oxyl