Carbamate ester linking estradiol to nor-nitrogen mustard; depolymerizes microtubules by binding to microtubule associated proteins (MAPs). Prepn: BE 646319; Fex et al., US 3299104 (1963, 1967 to AB Leo); Niculescu-Duvaz et al., J. Med. Chem. 10, 172 (1967).
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