Synonyms: Propanedioicacid, [(4-methoxyphenyl)methylene]-, bis(1,2,2,6,6-pentamethyl-4-piperidinyl)ester (9CI);1,1-Bis(1,2,2,6,6-pentamethyl-4-piperidyloxycarbonyl)-2-(4-methoxyphenyl)ethene;Bis(1,2,2,6,6-pentamethylpiperidin-4-yl) p-methoxybenzylidenemalonate; HostavinPR 31; PBH 3; PR 31; Sanduvor PR 31