👉 The term "isohyetal" refers to a type of compound that is composed of only one functional group, which can be an oxygen atom or a hydrogen atom. Isohyetal compounds are often used in organic chemistry and are characterized by their ability to undergo isomerism, the process by which two different isohyalid compounds can form a single compound with the same chemical structure but different molecular structures. Isohyetal compounds are distinguished from other types of isomers because they