3AX8:
reference: New C15-substituted active vitamin D3., Shindo K, Kumagai G, Takano M, Sawada D, Saito N, Saito H, Kakuda S, Takagi K, Ochiai E, Horie K, Takimoto-Kamimura M, Ishizuka S, Takenouchi K, Kittaka A, Org Lett. 2011 Jun 3;13(11):2852-5. Epub 2011 May 3. PMID: 21539305

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