4572-09-2 Allantoin glycyrrhetinic acid Allantoin, compd. with glycyrrhetinic acid Olean-12-en-29-oic acid, 3-hydroxy-11-oxo-, (3beta,20beta)-, compd. with (2,5-dioxo-4-imidazolidinyl)urea (1:1) Olean-12-en-29-oic acid, 3beta-hydroxy-11-oxo-, compd. with allantoin (1:1)