^ 3.03.1Azadian-Boulanger G, Bertin D. Synthèse et activité utérotrophique des 11β-méthoxy estradiol 11β-méthoxy estriol et 11β-méthoxy 17α-éthynyl estradiol [Synthesis and uterotropic activity of 11β-methoxyestradiol, 11β-methoxyestriol, and 11β-methoxy-17α-ethynylestradiol]. Chimica Therapeutica. 1973, 8 (4): 451–454. ISSN 0009-4374. The prepn. and estrogenic activity of the 11β-methoxylated derivs. of estradiol, estriol, and 17α-ethynylestradiol were described. When administered orally to mice, the 3 compds. were from 10 to 1000 times more active than the corresponding nonmethoxylated estrogens.