(2E)-5-(furan-2-yl)-5-hydroxy-3-methoxy-2-pentenoic acid methyl ester

2-(furan-2-yl)-4-methoxy-2,3-dihydropyran-6-one

diethyl-methyl-[(2-methylcyclohexylidene)methoxy]silane

1-phenylhex-2-yn-1-one

5-羟基吡啶甲酸乙酯