C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 401/00 (2006.01)
Patent
CA 2147264
Highly crystalline vitamin D derivatives represented by the formula: (see formula I) (where R1 is a straight or branched C4 - C9 alkyl group optionally having a hydroxyl group; R2 and R3 which may be the same or different are each an acyl group), as well as a process for producing 22-oxavitamin D derivatives of high purity by hydrolyzing said compounds.
Chugai Seiyaku Kabushiki Kaisha
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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