D:\Msd2ZAout06\0408l1 rSD7474r3.D 5 a Androstanol AC n i : L.I ; i u (—1 Etiocholanolone AC A ^.^.J^"^-^ '-^I^-^Trfr Androsterone AC 1—1 F • Li u I-; i I''. i ' L-i i ! iJ 5b Androstan 3a 17b diol diAC 11 KetoEttochotanolone AC ''b^^i^mf^.^As 5a Androst an 3a 17 b dio l diAC -ins — .v= — =^ — ^?1S- 5b Pregnan 3a 20a diol diAC i^tr^Tif^^a;^ 5r :•=!.!-- -.y. / I / 1 / I f 1 / '■'' ^^^v / '' ' / ' -^ -~" '-— "■ '■■' "" Page 2 or 2 C;\MSDCHEMVCUSTRPT\MAN52.CRT 3/4/2006 2:43 PM USADA 0322 3i