7α-Methyl-19-norandrostenedione (MENT dione), or 7α-methyl-19-norandrost-4-ene-3,17-dione, also known as trestione, as well as 7α-methylestr-4-ene-3,17-dione, is a synthetic anabolic-androgenic steroid (AAS) and a derivative of 19-nortestosterone (nandrolone).Na, S., Yum, T., Choi, H., Jung, H., Pang, K., & Kim, Y. (2012). Detection of metabolites of mentabolan, a pro-anabolic steroid never marketed, in human urine by GC/MS and GC/MS/MS analysis. 제 49 회 한국분석과학회 추계학술대회, 229-229. It may act as a prohormone of trestolone (7α-methyl-19-nortestosterone; MENT). MENT dione has been sold on the Internet under the name Mentabolan as a "dietary supplement".
Applications If mentabolan is oxidized with a catalytic amount of a copper halide in the presence of oxygen it gives almestrone.Kuniaki Tatsuta, Kazuo Maruhashi, & Shingo Yano, WO2007049672 (to Taiho Pharmaceutical Co Ltd). Mentabolan is a precursor in a recent Chinese synthesis of tibolone.孙晓明, et al. CN114409717 (2023 to Hunan Keyixin Biomedical Co ltd). Mentabolan was an intermediate in the original Upjohn synthesis of mibolerone. See also 4-Androstenedione Bolandiol Bolandione Bolenol Dienedione Methoxydienone
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