Keywords: Phenanthrene-labelled-2D-skeletal.png en Skeletal formula of the phenanthrene molecule C<sub>14</sub>H<sub>10</sub> with the substitution positions numbered and the bay and K regions labelled Based on http //umbbd ethz ch/pha/c0431_2 gif Own 2014-06-13 Ben Mills Benjah-bmm27 Images by Ben Mills Phenanthrene |