Used as a key intermediate in the semi-synthesis of paclitaxel (taxol), a potent anticancer drug. It is derived from natural precursors in yew species and enables more efficient production of taxol compared to direct extraction. Its hydroxyl group at the C-19 position allows for chemical modifications that facilitate the synthesis of taxol and related analogs with improved solubility or activity. This compound supports large-scale manufacturing of chemotherapeutic agents used in treating ovarian, breast, and lung cancers.