CAS 115479-39-5 7-[(3xi)-5-O-[tert-Butyl(dimethyl)silyl]-2,3-O-(1-methylethylidene)-beta-D-threo-pentofuranosyl]-4-chloro-7H-pyrrolo[2,3-d]pyrimidine (HCID 46783418)|Huagongshe