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19-Norpregn-20-yn-3-one,4,5-epoxy-17-hydroxy-, (4b,5b,17a)- (9CI);
4,5-Epoxy-5H-cyclopenta[a]phenanthrene,19-norpregn-20-yn-3-one deriv.;
17b-Hydroxy-19-nor-4b,5b-epoxy-17a-pregn-20-yn-3-one;
4b,5-Epoxy-17a-ethynyl-17-hydroxy-5b-estran-3-one;
Norethindrone 4b,5b-epoxide;
Norethisterone 4b,5b-epoxide

C20H26O3

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20799-24-0

19-Norpregn-4-en-20-yn-3-one,17-(acetyloxy)-, 3-oxime, (17a)- (9CI);
19-Nor-17a-pregn-4-en-20-yn-3-one,17-hydroxy-, oxime, acetate (ester) (8CI);
17a-Ethynyl-17b-acetoxy-19-norandrost-4-en-3-one oxime;
Norethisterone acetate 3-oxime;
Norethisterone oxime acetate;
ORF 5263;
SO 36

19-Norpregn-4-en-20-yn-3-one,17-hydroxy-, oxime, (17a)-;
19-Nor-17a-pregn-4-en-20-yn-3-one,17-hydroxy-, oxime (8CI);
Norethindrone 3-oxime;
Norethindrone oxime;
Norethisterone 3-oxime;
Norethisterone oxime;
SO 33

19-Norpregna-4,15-dien-20-yn-3-one,17-hydroxy-11-methylene-, (17a)-;
11-Methylene-D15-Norethisterone;
Org 30659;
Tosagestin

19-Norpregn-20-yne-3,17-diol,(3a,5b,17a)-;
19-Nor-5b,17a-pregn-20-yne-3a,17-diol (8CI);
17a-Ethinyl-5b-estrane-3a,17b-diol;
17a-Ethynyl-5b-estrane-3a,17b-diol;
17a-Ethynyl-5b-oestrane-3a,17b-diol;
3a,5b-Tetrahydronorethindrone;
3a,5b-TetrahydroNorethisterone

19-Norpregn-4-en-20-yne-3,17-diol,17-acetate 3-cyclopentanepropanoate, (3a,17a)- (9CI);
Norethisterone acetate 3-cyclopentylpropionate

19-Norpregn-4-en-20-yn-3-one,10-hydroperoxy-17-hydroxy-, (17a)- (9CI);
19-Nor-17a-pregn-4-en-20-yn-3-one,10-hydroperoxy-17-hydroxy- (8CI);
Hydroperoxide, 17-hydroxy-3-oxo-19-nor-17a-pregn-4-en-20-yn-10-yl (7CI);
10b-Hydroperoxy-17-hydroxy-17a-ethynylestr-4-en-3-one;
10b-Hydroperoxy-19-Norethisterone;
NSC 92351;
Sch 10015

19-Norpregn-4-en-20-yn-3-one,10,17-dihydroxy-, (17a)- (9CI);
19-Nor-17a-pregn-4-en-20-yn-3-one,10,17-dihydroxy- (6CI,7CI,8CI);
10b,17-Dihydroxy-19-nor-17a-pregn-4-en-20-yn-3-one;
10b,17b-Dihydroxy-17a-ethynylestr-4-en-3-one;
10b-Hydroxy-19-Norethisterone;
10b-Hydroxynorethindrone;
10b-HydroxyNorethisterone;
17a-Ethinyl-10b,17b-dihydroxyestr-4-en-3-one;
17a-Ethynyl-10b,17b-dihydroxy-4-estren-3-one;
NSC 63012

C20H26O3

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