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基于 PubChem CID 索引，支持名称 / 同义词 / CAS / SMILES 检索。
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(1R,3aS,3bR,9aR,9bS,11aS)-11a-ethyl-1,7-diethynyl-1H,2H,3H,3aH,3bH,4H,8H,9H,9aH,9bH,10H,11H,11aH-cyclopenta[a]phenanthren-1-ol CAS 1337972-89-0 PubChem CID 29979853
C#CC1=CC2=CC[C@@H]3[C@H](CC[C@@]4(CC)[C@H]3CC[C@@]4(O)C#C)[C@H]2CC1 -
13-Ethyl-3-ethynyl-18,19-dinor-17a-pregna-3,5-dien-20-yn-17-ol CAS 1337972-89-0 PubChem CID 74603151
C#CC1=CC2=CCC3C(CCC4(CC)C3CCC4(O)C#C)C2CC1 -
13-Ethyl-3-ethynyl-18,19-dinor-17?-pregna-3,5-dien-20-yn-17-ol; (1S,10R,11S,14R,15S)-15-Ethyl-5,14-diethynyltetracyclo[8.7.0.02,7.011,15]heptadeca-5,7-dien-14-ol CAS 1337972-89-0 PubChem CID 145714432
C#CC1=CC2=CC[C@@H]3[C@H](CC[C@@]4(CC)[C@H]3CC[C@@]4(O)C#C)C2CC1