2-benzyl-5-methyl-1,2-oxazol-3-one

3-benzyloxy-5-methylisoxazole

4-Isoxazolecarboxylic acid, 2,3-dihydro-5-methyl-3-oxo-

(3-Oxo-2,3-dihydro-1,2-oxazol-5-yl)acetic acid