Method of producing water-soluble sodium pheophorbide a
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United States of America Patent
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Jan 3, 1995
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N/A
app pub date -
Sep 20, 1993
filing date -
Sep 27, 1990
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Abstract
A producing method of phosphoric a applied in medical treatment comprises dissolving sodium hydroxide in n-propyl alcohol, isopropyl alcohol or mixtures thereof so as to prepare a solution of the sodium hydroxide, dissolving the pheophorbide a in a solvent miscible with the sodium hydroxide solvent so as to prepare a solution of the pheophorbide a and dissolving the solution of the pheophorbide a in the solution of the sodium hydroxide so as to obtain sodium pheophorbide a. Thus, the water-soluble pheophorbide a can be safely used.
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