Keywords: 1,7-shift of lumisterol to vitamin D2.png 1 7-shift of lumisterol to vitamin D2 1 7vitdsynthesis png 1 7vitdsynthesis png Wtucker8891 derivative work Robert Allen <span class signature-talk >talk</span> 2010-08-01 Sigmatropic rearrangements Vitamin D2 Lumisterol |