Apooxytetracycline, alpha-
Application Notes
α-Apooxytetracycline is a degradation product of oxytetracycline, formed under acidic conditions. After initial dehydration to anhydrooxytetracycline, it undergoes an internal cyclisation of the C5-OH to the C12 ketone. The resulting cleavage of the C12-C12a bond generates two isomers, α- and β-apooxytetracycline. α-Apooxytetracycline is an important standard for monitoring oxytetracycline stability.
References
- Reversed-phase high-performance liquid chromatographic method for the assay of oxytetracycline Barnes W.N. et al., J. Chromatog. 1985, 347, 173.
- Quantitative analysis of oxytetracycline and its impurities by LC-MS-MS. Lykkeberg A.K. et al., Int. J. Pharm. 2004, 34, 325.
- Terramycin. VI. The structure of 4- and 6-apoterramycin, acid rearrangement products of terramycin. Hochstein F.A. et al., J. Am. Chem. Soc. 1952, 74, 3707.



