Cahn-Ingold-Prelog rules e c Assign a priority number to each group attached to the chiral carbon Atom with highest atomic number assigned the highest priority #1 In case of ties look at the next atoms along the chain Double and triple bonds are treated like bonds to duplicate atoms Chapter 5Chapter 5 7 Cahn-Ingold-Prelog Rules • Assign a priority number to each group attached to the chiral carbon. • Atom with highest atomic number assigned the highest priority #1. • In case of ties, look at the next atoms along the chain. • Double and triple bonds are treated like bonds to duplicate atoms. =>