Acyl iodide refers to a class of organic compounds containing a carbonyl group bonded to an iodine atom. These compounds are commonly used in organic synthesis due to their reactivity and ease of conversion to other functional groups. However, there are other terms used interchangeably with acyl iodide, including iodoformate, iodocarbonyl, iodinated ester, and iodide ester. These synonyms are used depending on the specific functional group or chemical structure of the compound. Acyl iodides and their synonyms play a critical role in organic chemistry, enabling the synthesis of complex molecules and materials essential in industries such as pharmaceuticals, agrochemicals, and plastics.