7-Acetyl paclitaxel is primarily used as an intermediate in the semi-synthesis of paclitaxel, a potent anticancer drug. It plays a key role in pharmaceutical research and development, especially in modifying paclitaxel derivatives to improve solubility, stability, or tumor-targeting efficiency. Due to its structural similarity to paclitaxel, it may also be studied for microtubule-stabilizing effects, which are critical in inhibiting cancer cell division. Additionally, it serves as a reference standard in analytical methods for quality control in drug manufacturing. Its application remains mostly confined to research settings and drug formulation processes rather than direct therapeutic use.