Synonyms: (2,5-dioxoimidazolidin-4-yl)urea;Glyoxylic(acid) diureide;urea, N-(2,5-dioxo-4-imidazolidinyl)-;Cutemol emollient;[(4S)-2,5-dioxoimidazolidin-4-yl]urea;Cordianine;Allantoin [USAN:BAN];5-Ureido-2,4-imidazolidindion;Allantoin (JAN/USP);[(4R)-2,5-dioxoimidazolidin-4-yl]urea;Urea, (2,5-dioxo-4-imidazolidinyl)-;(+/-)-Allantoin;Septalan;Urea, (2,5-dioxo-4-imidazolidinyl)- (9CI);Glyoxyldiureide;Urea, (2, 5-dioxo-4-imidazolidinyl)-;Psoralon;Glyoxylic diureide;(2,5-Dioxo-4-imidazolidinyl)urea;5-Ureidohydantoin;DL-Allantoin;Allantoin (5-Ureidohydantoin);Sebical;Allantol;Urea,(2,5-dioxo-4-imidazolidinyl)-;