25-羟基胆甾-5-烯-3beta-基乙酸酯

2-(5-iodo-2-methylpent-4-yn-2-yl)oxyoxane

2,2-dimethyl-3H-pyran-4-one

2,7-dimethyloct-3-en-5-yne-2,7-diol

2,6-dimethyl-5-methylene-hept-3-yne-2,6-diol