4-hydroxy-3,3'-dimethoxy-8',9'-dinor-4',7-epoxy-8,5'-oxyneoligna-7'-al

二氟溴乙酸

2-[1,1-dichloro-2,2-difluoro-2-(tetrahydropyran-4-yl)ethyl-sulphanyl]pyridine

三氟乙酸

2,2-二氟乙酸钠