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A semisynthetic estrogenic compound, C22H32N2O5S, consisting of the sulfate form of estrone stabilized with piperazine, used in estrogen replacement therapy.

References in periodicals archive ?
With the listing, Ortho-Est Tablets will join three other products in the AdvancePCS oral estrogen replenishment category, a segment with an estimated $75 million in annual sales.
Ortho-Est Tablets are now on two formularies - AdvancePCS and MedCo Plan Sponsors.
This new addition of Ortho-Est will strengthen our partnership with PCS and increase the availability of our estrogen portfolio to a larger base of patients.