20.23
[]. M F Holick, et al. Isotachysterol-3 and 25-hydroxyisotachysterol-3: Analogs of ,25-dihydrox Vitamin D3. Science. 93 Jun ;80(4089):964-6.

H300-H3-H330-H32
P260-P264-P20-P2-P280-P284-P362-P403+P233-P405-P50
6.
28
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