6542-44-5(土霉素杂质C)
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Oxytetracycline EP Impurity C/α-Apo-Oxytetracycline/(4S,4aR,5S,5aR,6R,12aS)-2-Acetyl-4-(dimethylamino)-3,5,10,12,12a-pentahydroxy-6-methyl-4a,5a,6,12a-tetrahydrotetracene-1,11(4H,5H)-dione
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