Diketo aldehyde impurity of dihydroartemisinin

(4R,4aS,4a1R,7R,7aS,10aS)-4,7-dimethyl-10-methylenedecahydronaphtho[1,8-cd][1,2]dioxepin-3(4a1H)-one

(R)-2-((1R,4R,4aS,8aS)-4,7-dimethyl-1,2,3,4,4a,5,6,8a-octahydronaphthalen-1-yl)propanoic acid

(3R,3aS,3a1R,6R,6aS,9S,10aS)-3,6,9-trimethyldecahydro-2H-3a1,9-epoxyoxepino[4,3,2-ij]isochromen-2-one

2-((1R,4R,4aS,8aR)-4,7-dimethyl-1,2,3,4,4a,5,6,8a-octahydronaphthalen-1-yl)prop-2-en-1-ol

2-((1R,4R,4aS,8aR)-4,7-dimethyl-1,2,3,4,4a,5,6,8a-octahydronaphthalen-1-yl)acrylic acid

(2S,3S,4S,5R,6S)-3,4,5-trihydroxy-6-(((3R,5aS,6R,8aS,9R,12R,12aR)-3,6,9-trimethyldecahydro-3H-3,12-epoxy[1,2]dioxepino[4,3-i]isochromen-10-yl)oxy)tetrahydro-2H-pyran-2-carboxylic acid

(3aS,4R,6aS,7R,10R,10aR)-8-hydroxy-4,7-dimethyldecahydrofuro[3,2-i]isochromen-10-yl acetate

(3R,5aS,6R,8aS,9S,12S,12aR)-3,6,9-trimethyloctahydro-3H-3,12-epoxy[1,2]dioxepino[4,3-i]isochromen-10(12H)-one

(3R,5aS,6R,8aS,9R,12R,12aR)-3,6,9-trimethyldecahydro-3H-3,12-epoxy[1,2]dioxepino[4,3-i]isochromen-10-ol