Learn what diastereomers are, how they differ from enantiomers and geometrical isomers, and how to identify and separate them. See examples of diastereomers with two or more stereocenters and their physical and chemical properties. Diastereomers are stereoisomers that are not mirror images of each other and have different physical and chemical properties. Here we explain the different types of isomers - constitutional, stereoisomers, enantiomers and diastereomers - and see how it's like family relationships. Learn what diastereomers are, how they differ from enantiomers and epimers, and how to name them using Cahn-Ingold-Prelog rules. Explore the types, properties, and applications of diastereomers with examples and diagrams.