1. Organic structures 1.1. Molecular Formula and Representations 1.2. Functional Groups 2. Isomerism 2.1. Isomer Classification 2.2. Structural Isomers 2.3. Cahn-Ingold-Prelog Rules 2.4. Geometric Isomers a) cis/trans isomers b) Z/E isomers 2.5. Molecular Projections 2.6. Optical Isomers