👉 In chemistry, an enantiomer is a compound that has two mirror images of one another. It can be defined as a substance with the same chemical formula but with a different arrangement of its atoms or molecules in space. Enantiomers are often used to distinguish between different products or substances from the same source. For example, the dihydrogen monoxide (H2O) is an enantiomer because it has two mirror images: one with respect to the +1 and one with respect