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Chain of Custody
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ATCC <-- Chas. Pfizer & Co., Inc. <-- QM 531
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References
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Theriault RJ. Mycarosyl macrolide antibiotics. US Patent 3,784,447 dated Jan 8 1974
Shull GM, et al. Oxygenation of steroids in the 11-position. US Patent 2,721,163 dated Oct 18 1955
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