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A semisynthetic estrogenic compound, C22H32N2O5S, consisting of the sulfate form of estrone stabilized with piperazine, used in estrogen replacement therapy.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.