Rapid identification of atypical tetracyclines using tandem mass spectrometric fragmentation patterns

The authors gratefully acknowledge the support of Slovenian Research Agency (P1-0034 and P1-0153). The support of the British Council (Partnership in Science Award RNP 7/2008), Slovenian Technology Agency TIA (VALOR08-02) and SPIRIT Slovenija (P-MR-09/104) is also gratefully acknowledged.