NSC 31894;7-Hydroxy-2-Methyl-4H-1-benzopyran-4-one;4H-1-Benzopyran-4-one, 7-hydroxy-2-Methyl-;7-Hydroxy-2-methylchromone;7-hydroxy-2-methyl-1-benzopyran-4-one;7-Hydroxy-2-methyl-4H-1-benzopyran-;Hymecromone EP Impurity B;Hymecromone Impurity 2 (Hymecromone EP Impurity B)