Stereoisomers Same bonding sequence. Different arrangement in space. Example:HOOC-CH=CH-COOH has two geometric(cis-trans)isomers: 0 O H &-0H o C-OH C=0 C=C HO-C H H H fumaric acid,mp 287C maleic acid,mp 138 C essential metabolite Chapter5 toxic irritant 2Chapter 5 2 Stereoisomers • Same bonding sequence. • Different arrangement in space. • Example: HOOC-CH=CH-COOH has two geometric (cis-trans) isomers: HO C O C H C H C O OH fumaric acid, mp 287 C essential metabolite o H C C C H C O OH O HO maleic acid, mp 138 C toxic irritant o =>