Process for the purification of benzphetamine hydrochloride
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United States of America Patent
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Jan 14, 2014
Grant Date -
May 14, 2009
app pub date -
Nov 2, 2005
filing date -
Nov 22, 2004
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Abstract
The present invention relates to the economical and separation of benzphetamine hydrochloride and methamphetamine by liquid extraction. An extraction process employing a suitable organic solvent and water at a pH in the range of from about 6 to about 8 provides excellent removal of the methamphetamine by dissolution in the water phase while the benzphetamine dissolves in the organic phase. Simple separation of the two phases results in separation of the two amines.
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