Sub Group: Hydantoins and Derivatives Catalog Number: 11977 Formula: C4H6O2N2 CAS Number: 55147-68-7 Molecular Weight: 114.1 Synonyms: 2,4-Imidazolidinedione, 5-methyl-, (R)- (9CI)(R)-(+)-5-Methylhydantoin 5(R)-Methylimidazolidine-2,4-dione D-5-Methylhyda