Ointment with excellent formulation stability
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United States of America Patent
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Jan 31, 2017
Grant Date -
Jan 16, 2014
app pub date -
Mar 28, 2012
filing date -
Mar 31, 2011
priority date (Note) -
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Abstract
Provided is an ointment which has excellent drug stability and excellent drug uniformity. The ointment, which comprises 1 to 5% by weight of 1-[2-[(4S)-4-hydroxy-1,2,3,4-tetrahydroquinolin-1-yl]-4-pyridyl]-2,3-bis(hydroxymethyl)-6,7-dimethoxynaphthalene·3/2 hydrate, 3 to 7% by weight of a separation inhibitor, 15 to 50% by weight of a hydrocarbon gel, a pH controller and 0.05 to 0.4% by weight of an antioxidant, has excellent drug stability and excellent drug dispersibility. In the present ointment, polyoxyethylene (196) polyoxypropylene (67) glycol is preferred as the separation inhibitor, diisopropanolamine is preferred as the pH controller, and dibutylhydroxytoluene is preferred as the antioxidant.
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