Keywords: Non-superimposability-of-2oh.png Image of the molecular model of 4-methyl benzene-1 2-diol showing the non-superimposability of the Kekule model of the benzene ring Note that in real life these isomers would be absolutely identical due to the fact that the benzene ring is actually a dislocalised pi bond 2008-05-06 own assumed Pylori Stereochemistry Catechols |