C5H8 is a hydrocarbon with five carbon atoms and eight hydrogen atoms, classified as an alkene or cycloalkene. It can exist in various structural forms, including linear and cyclic structures, which influence its chemical properties and reactivity. Common examples of C5H8 compounds include isoprene, a key building block in natural rubber, and 1-pentene, used in the production of plastics. As a hydrocarbon, C5H8 is part of a larger family of organic compounds primarily composed of carbon and hydrogen. These compounds are significant in various industries, including petrochemicals and materials science, due to their versatility and role in synthesizing more complex molecules.