C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 401/00 (2006.01) B01D 15/08 (2006.01) C07J 9/00 (2006.01)
Patent
CA 2275557
A process for the production of vitamin D3 or previtamin D3 from an isomer mixture comprises carrying out a separation by column chromatography using supercritical or liquid carbon dioxide, optionally with a modifier, as the mobile phase and an optionally modified silica gel as the stationary phase.
F. Hoffmann-La Roche Ag
Gowling Lafleur Henderson Llp
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