0378.12 Carbazole [86-74-8] 0615.27 17a(H)-22,29,30-Trisnorhopane [53584-59-1] 0622.27 aaa (20R)-Cholestane [481-21-0] 0643.28 aßß (20R,24S)-24-Methylcholestane [71117-90-3] 0609.29 aaa (20R,24R)-24-Ethylcholestane [62446-14-4]