2-methylfuro[3,2-c]chromen-4-one

4-prop-2-ynoxychromen-2-one

1-(2-Hydroxy-phenyl)-2-prop-2-ynyl-pent-4-yn-1-one

3-Prop-2-ynyl-4-prop-2-ynyloxy-chromen-2-one

4-hydroxy-3-(3-oxo-3-phenylpropyl)chromen-2-one