CPC C08B 37/0012 (2013.01) | 13 Claims |
1. A composition comprising a mixture of isomerically-purified hydroxypropyl β-cyclodextrin molecules comprising: β-cyclodextrin substituted with seven hydroxypropyl groups (“DS-7”); and wherein the composition comprises less than 1% β-cyclodextrin substituted with six hydroxypropyl groups (“DS-6”) wherein the total amount of impurities are measured to be less than or equal to 0.05% by HPLC.
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