mebolazine mebolazine mebolazine (inn; brand names dostalon and roxilon; also known as dimethazine, dymethazine, di(methasterone) azine, or 2α,17α-dimethyl-5α-androstan-17β-ol-3-one azine) is a synthetic, orally active androgen/anabolic steroid (aas) and a 17α-alkylated derivative of dihydrotestosterone (dht) which is no longer marketed. it has a unique and unusual chemical structure, being a dimer of methasterone linked at the 3-position of the a-ring by an azine group, and reportedly acts as a prodrug of methasterone. mebolazineclinical datatrade namesdostalon, roxilonother namesdimethazine; dymethazine; dimethasterone azine; di(methasterone) azine; 2α,17α-dimethyl-5α-androstan-17β-ol-3-one azineidentifiers iupac name (3z)-3-phenanthren-3-ylidene)hydrazinylidene]-2,10,13,17-tetramethyl-2,4,5,6,7,8,9,11,12,14,15,16-dodecahydro-1h-cyclopentaphenanthren-17-ol cas number3625-07-8 ypubchem cid9571069chemspider16736946 nunii69c642i19vchemical and physical dataformulac42h68n2o2molar mass633.018 g·mol−13d model (jsmol)interactive image smiles c23(cc4()()3cc5(c)()4cc(c)5o)()c/c((c)c2)=n/n=c1(c)c6(c)(cc7()()6cc8(c)()7cc(c)8o)()c/1 inchi inchi=1s/c42h68n2o2/c1-25-23-37(3)27(9-11-29-31(37)13-17-39(5)33(29)15-19-41(39,7)45)21-35(25)43-44-36-22-28-10-12-30-32(38(28,4)24-26(36)2)14-18-40(6)34(30)16-20-42(40,8)46/h25-34,45-46h,9-24h2,1-8h3/b43-35-,44-36-/t25-,26-,27+,28+,29-,30-,31+,32+,33+,34+,37+,38+,39+,40+,41+,42+/m1/s1 nkey:popwfgnrccujgu-qqzdhcpgsa-n n ny (what is this?) (verify) since 2008, mebolazine has been used illegally as an ingredient is some dietary supplements, including vitamin b supplements, and in the united states the food and drug administration has taken legal action against such manufacturers.