Paclitaxel Impurity 2

(3S,?4aR,?5S,?6S,?11R,?12R,?12aR)?-?5-?(Acetyloxy)?-?1,?2,?3,?4,?4a,?5,?6,?7,?8,?11,?12,?12a-?dodecahydro-?6,?11,?12-?trihydroxy-?9,?12a,?13,?13-?tetramethyl-?4-?methylene-?8-?oxo-?6,?10-?methanobenzocyclodec?en-?3-?yl β-?(Dimethylamino)?-?benzenepropanoate is an impurity of Paclitaxel (P132500), an antineoplastic. Paclitaxel is used to treat patients with lung, ovarian, breast cancer, head and neck cancer, and advanced forms of Kaposi''s sarcoma. Paclitaxel Impurity 2.