A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
167/163, 167/171
A61K 9/127 (2006.01) A61K 37/22 (1990.01)
Patent
CA 1308025
ABSTRACT A composition having equal to or greater than about 97 percent by weight phosphatidylcholine and about equal to or less than about 3 percent by weight to about 0.5% sphingomylin and equal to or less than about 0.5% lysophosphatidylcholine (undetectable by UV at 205nm) has been found to result in liposomes having improved stability. Methods for preparing the composition are disclosed whereby the phospholipids are extracted and then purified using silica chromatography.
552710
Kearns John J.
Suddith Robert L.
Tremblay Paul A.
Osler Hoskin & Harcourt Llp
The Liposome Company Inc.
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