Chlorodehydromethylandrostenediol (CDMA), also known as 4-chloro-17α-methylandrost-1,4-diene-3β,17β-diol, is a synthetic, orally active anabolic-androgenic steroid (AAS) and a 17α-alkylated derivative of 4-androstenediol that was never marketed. 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. The drug was the subject of a scathing and highly critical article by The Washington Post in November 2006. CDMA was voluntarily discontinued by Gaspari Nutrition in mid-2006, likely fearing government sanctions if it continued to sell the product. During the brief period of time that CDMA was sold online, it was a