2-Propynal, 3-phenyl- 2579-22-8 3-Phenyl-2-propynal 3-Phenylpropynal Benzenepropiolaldehyde NSC47568 Phenylacetylenecarboxaldehyde Phenylpropargylaldehyde Phenylpropiolaldehyde Phenylpropynal Propiolaldehyde, phenyl-