2-methoxyethinyl estradiol

17α-Ethynyl-2-Methoxyestradiol

2-Methoxy-17α-ethynylestradiol

2-Methoxy-17α-ethynyl Estradiol

2-Methoxy-19-nor-17α-pregna-1,3,5(10)-trien-20-yne-3,17-dioll

(17α)-2-Methoxy-19-norpregna-1,3,5(10)-trien-20-yne-3,17-diol