2,2-Dichloroethanol + 2,2-Dichloroethyl (Trichloromethyl) Carbonate + 2,2-Dichloroethyl Carbonochloridate (Mixture) is an intermediate in the synthesis of 10-O-2,2-Dichloroethoxycarbonyl Docetaxel (D434415). 10-O-2,2-Dichloroethoxycarbonyl Docetaxel is an impurity of Docetaxel (D494420); an anti-neoplastic and anti-mitotic agent that promotes the assembly of micro-tubules and inhibits their de-polymerization to free tubulin.