Complex sentence: The substituted amphetamines consist of the same structure with one or more substitutions; common examples include cathinone, DOM, ephedrine, MDMA, methamphetamine, methcathinone, and methylphenidate, though a large number of such compounds have been synthesized.
Split into simpler sentences: The substituted amphetamines consist of the same structure with one or more substitutions. Common examples include cathinone, DOM, ephedrine, MDMA, methamphetamine, methcathinone, and methylphenidate though a large number of such compounds have been synthesized.