Chloromorphide (α-chloromorphide) is an opiate analog that is a derivative of morphine, where the 6-hydroxy group has been replaced by chlorine. Developed in 1933 in Germany, it has approximately ten times the potency of morphine. It has similar effects to morphine, such as sedation, analgesia, and respiratory depression. During the 1930s, the entire series of alpha- and beta-halogenated codides, morphides, dihydromorphides, and dihydrocodides were produced and described, and α-bromomorphide and α-iodomorphide are sometimes currently used in research and manufacturing.