The correct answer is Acetyl salicylic acid. Aspirin is a nonsteroidal anti-inflammatory drug (NSAID). It was the first of this class of drugs to be discovered. Aspirin, chemically known as acetylsalicylic acid. Aspirin is a common drug for relieving minor aches, pains, migraine headaches, and fevers. It is also used as an anti-inflammatory or a blood thinner. Additional InformationFelix Hoffmann was the inventor of Aspirin. Sodium salicylate, the active component of aspirin, is widely used for its anti-inflammatory, antipyretic, and analgesic effects and also for its inhibitory effect on platelet aggregation. Its chemical formula is C7H5NaO3. Methyl salicylate (oil of wintergreen or wintergreen oil) is an organic ester naturally produced by many species of plants, particularly wintergreens. Its chemical formula is C8H8O3. It is used to treat minor aches and pains of the muscles/joints (such as arthritis, backache, sprains). Menthol and methyl salicylate work by causing the skin to feel cool and then warm. Ethyl salicylate is the ester formed by the condensation of salicylic acid and ethanol. Its chemical formula is C9H10O3.