英文别名Gemcitabine Impurity 18; Ethyl 3-(2,2-dimethyl-1,3-dioxolan-4-yl)-2,2-difluoro-3-hydroxypropionate; Ethyl 3-(2,2-dimethyl-1,3-dioxolan-4-yl)-2,2-difluoro-3-hydroxypropiote; D-glycero-Pentonic acid, 2-deoxy-2,2-difluoro-4,5-O-(1-methylethylidene)-, ethyl ester, (3ξ)-; ethyl 3-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-difluoro-3-hydroxypropanoate 
