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Structural Feature
C(3) ketone reduction only
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Impurities
3-Deoxolevonorgestrel 13-Ethyl-3-ethynyl-18,19-dinor-17α-pregna-3,5-dien-20-yn-17-ol 13-Ethyl-3-methoxygona-2,5(10)-dien-17β-ol Methoxydienone 13-Ethyl-3-methoxy-18,19-dinor-17α-pregna-3,5-dien-20-yn-17-ol 13-Ethyl-3-methoxy-18,19-dinor-17α-pregna-2,5(10)-dien-20-yn-17-ol 13-Ethyl-3-methoxy-18,19-dinor-17α-pregna-1,3,5(10)-trien-20-yn-17-ol 13-Ethyl-3,4-diethynyl-18,19-dinor-17α-pregn-5-en-20-yn-3β,4α,17-triol 13-Ethyl-3,4-diethynyl-18,19-dinor-17α-pregn-5-en-20-yn-3α,4α,17-triol
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References
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No modification of progestagenic activity (Besse, 2009) Decreases specificity by introducing a corticoid component
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