1,3-Dimethyl-4,5-dihydroxyethyleneurea 132822-48-1 2-Imidazolidinone, 4,5-dihydroxy-1,3-dimethyl- 3923-79-3 4,5-Dihydroxy-1,3-dimethyl-2-imidazalidinone 4,5-Dihydroxy-1,3-dimethyl-2-imidazolidinone 4,5-Dihydroxy-1,3-dimethylimidazolidin-2-one EINECS 223-496-2 NSC 57547