17.beta.-Estradiol 3-[bis(2-chloroethyl)carbamate] 2998-57-4 ESTRAMUSTINE Estra-1,3,5(10)-triene-3,17-diol (17.beta.)-, 3-[bis(2-chloroethyl)carbamate] Estra-1,3,5(10)-triene-3,17-diol, 3-[bis(2-chloroethyl)carbamate], (17.beta.)- Estradiol 3-[bis(2-chloroethyl)carbamate] Estradiol, 3-[bis(2-chloroethyl)carbamate] Leo 275 NSC89201 RO 21-8837