A remarkably simple, highly efficient, and stereoselective synthesis of steroids and other polycyclic systems. Total synthesis of Estra-1,3,5(10)-trien-17-one via intramolecular capture of o-quinodimethanes generated by cheletropic elimination of SO2

R&D Labs maybe for 7647-47-4

• zhenjiang runjing high purity chemical co ltd

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• Guangzhou Flower's Song Fine Chemical CO,. Ltd

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• Shanghai Kefu Chemical Co.,Ltd.

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