Process for the preparation of conjugated estrogens from pregnant mare urine
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United States of America Patent
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Issued Date -
Oct 24, 2002
app pub date -
Apr 19, 2001
filing date -
Apr 19, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
This invention is directed to a process for the preparation of conjugated estrogens from pregnant mare urine (PMU), comprising the steps of (a) treating PMU material with an alkaline solvent; (b) filtrating the treated PMU material to remove mucilaginous substances and solids; (c) contracting the filtered PMU resultant with a sufficient quantity of polystyrene absorber resins; and (d) eluting the resins with a water-miscible solvent to separate conjugate estrogens and resins and then obtaining crude extract conjugated estrogens.
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