An alkyl halide with molecular formula ${\mathrm{C}}_6{\mathrm{H}}_{13}\mathrm{Br}$ on dehydrohalogenation gave two isomeric alkenes X and Y with molecular formula C₆H_{12 .} On reductive ozonolysis, X and Y gave four compounds  ${\mathrm{CH}}_3{\mathrm{COCH}}_3,{\mathrm{CH}}_3\mathrm{CHO}$, ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CHO}\text{ and }{\left({\mathrm{CH}}_3\right)}_2\mathrm{CHCHO}.$The alkyl halide is