# What is the 2-methyl cyclopentanone condensed formula?

${C}_{6} {H}_{10} O$
Looking at the molecular formula, there are clearly TWO degrees of unsaturation (i.e. as compared to a saturated hydrocarbon, which has a general formula of ${C}_{n} {H}_{2 n + 2} O$). This corresponds to (i) the carbonyl group, and (ii) the ring junction.......