3AFR:
reference: 22S-Butyl-1alpha,24R-dihydroxyvitamin D(3): Recovery of vitamin D receptor agonistic activity., Inaba Y, Nakabayashi M, Itoh T, Yoshimoto N, Ikura T, Ito N, Shimizu M, Yamamoto K, J Steroid Biochem Mol Biol. 2010 Mar 6. PMID: 20211257

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