fluorouracil 5-fu, fu cancer chemotherapy drug molecule. skeletal formula.

fluorouracil fu cancer chemotherapy drug molecule skeletal formula uracil 5fu pyrimidine tumor thymidylate synthase antimetabolite thymidine dna thymineless pancreatic breast colorectal actinic keratoses basal cell carcinoma skin capecitabine capecitabin tegafur carbon hydrogen oxygen nitrogen fluorine atoms atomic molecular compound composition chemical chemistry structure line drawing flat icon vector