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  • Title: Carbon-13 magnetic resonance spectroscopy of drugs III: penicillins.
    Author: Chang CJ, Hem SL.
    Journal: J Pharm Sci; 1979 Jan; 68(1):64-9. PubMed ID: 758467.
    Abstract:
    The natural abundance 13C-NMR spectra of a series of penicillins (penicillin V methyl ester, penicillin V, penicillin G, methicillin, oxacillin, cloxacillin, and dicloxacillin) were studied. The chemical shifts were assigned using the pulse Fourier transform technique with the aid of long-range carbon-13 hydrogen coupling. The previous assignments of pencillin V methyl ester were revised.
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