109716-83-8 (UNSPECIFIED 12 POSITION) 3,12-Epoxy-12H-pyrano[4,3-j]-1,2-benzodioxepin, 10-ethoxydecahydro-3,6,9-trimethyl-, (3R,5aS,6R,8aS,9R,10S,12R,12aR)- 75887-54-6 AIDS-006029 AIDS006029 Arteether Beta-Arteether Dihydroartemisinin ethyl ether Ethyl-ether-quinghaosu WR-255131