Isolation and identification of process impurities in trimethoprim drug substance by high-performance liquid chromatography, atmospheric pressure chemical ionization liquid chromatography/mass spectrometry and nuclear magnetic resonance spectroscopy
Lehr, Gary J, Barry, Thomas L, Petzinger, Glenn, Hanna, George M, Zito, S.William
Published in Journal of pharmaceutical and biomedical analysis (01.03.1999)
Published in Journal of pharmaceutical and biomedical analysis (01.03.1999)
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Potentiation of opioid analgesia by cocaine: the role of spinal and supraspinal receptors
Sierra, V, Duttaroy, A, Lutfy, K, Candido, J, Billings, B, Zito, S W, Yoburn, B C
Published in Life sciences (1973) (1992)
Published in Life sciences (1973) (1992)
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