Shuttle Pharmaceuticals Holdings, Inc., in conjunction with its subsidiary Shuttle Pharmaceuticals, Inc., is committed to the identification, advancement, and commercialization of pharmaceutical agents crafted to heighten the susceptibility of cancerous cells to radiation therapy. Its current portfolio of clinical-phase treatments features Ropidoxuridine, an orally administered halogenated pyrimidine, which is intended for individuals afflicted with brain tumors and soft tissue sarcomas. Additionally, the company is progressing Doranidazole, an injectable compound designed to make oxygen-deprived tumor cells more responsive to radiation, targeting malignancies of the pancreas, lungs, and liver.