Chlorodehydromethylandrostenediol (CDMA), also known as 4-chloro-17α-methylandrost-1,4-diene-3β,17β-diol, is a synthetic, orally activeanabolic-androgenic steroid (AAS) and a 17α-alkylatedderivative of 4-androstenediol that was never marketed.[1] It was first encountered in 2005 when it was introduced as a "dietary supplement" and putative prohormone under the name Halodrol-50 by industry veteran, Bruce Kneller while working with the dietary supplement company, Gaspari Nutrition.[1][2] The drug was the subject of a scathing and highly critical article by The Washington Post in November 2006.[1] CDMA was voluntarily discontinued by Gaspari Nutrition in mid-2006, likely fearing government sanctions if it continued to sell the product.[1] During the brief period of time that CDMA was sold online, it was an extremely well-selling product; its total sales are estimated to have been greater than twenty five million dollars, and by some estimates, CDMA may have been the best-selling hormonal product ever sold "over-the-counter" (i.e., without a prescription) in the United States.[1]CDMA continued to be sold online until the 2014 prohormone ban as generic versions known as clones.
CDMA is closely related to chloromethylandrostenediol (CMA; Promagnon), which was also developed by industry veteran Bruce Kneller and was also briefly sold on the Internet in 2005 and 2006, though by a different company (Peak Performance Laboratories).[1] Both compounds were derived from CDMT (brand name Oral Turinabol), a popular AAS that was introduced in the 1960s.[1]
