Gemcitabine Hydrochloride intermediates

Gemcitabine Hydrochloride Cas : 122111-03-9 USP28 We also can supply intermediates:
1]ethyl 2,2-difluoro-3-hydroxy-3-((R)-2,2-dimethyl-1,3-dioxolan-4-yl)propanoate
2]ethyl 2,2-difluoro-3-((R)-2,2-dimethyl-1,3-dioxolan-4-yl)-3-phenoxypropanoate
3]2-deoxy-2,2-difluoro-D-ribofuranose-3,5-dibenzoates
4]2-deoxy-2,2-difluoro-D-ribofuranose-3,5-dibenzoates-1-y1methanesulfonate