David Q. Liu

A generic approach for the determination of trace hydrazine in drug substances using in situ derivatization-headspace GC–MS

Mingjiang Sun, Lin Bai, David Q. Liu · Journal of Pharmaceutical and Biomedical Analysis · 2008 · 205 citations

Pharmacy, Pharmaceutical Analysis, Pharmacology +10

Use of a quadrupole linear ion trap mass spectrometer in metabolite identification and bioanalysis

Yuanqing Xia, Jeffrey D. Miller, Ray Bakhtiar et al. · Rapid Communications in Mass Spectrometry · 2003 · 118 citations · Full text

Life Sciences, Biochemistry, Pharmacology +17

A practical derivatization LC/MS approach for determination of trace level alkyl sulfonates and dialkyl sulfates genotoxic impurities in drug substances

Jianguo An, Mingjiang Sun, Lin Bai et al. · Journal of Pharmaceutical and Biomedical Analysis · 2008 · 78 citations

Pharmacy, Pharmaceutical Analysis, Toxicology +17

Use of on‐line hydrogen/deuterium exchange to facilitate metabolite identification

David Q. Liu, Cornelis E. C. A. Hop, Maria Beconi et al. · Rapid Communications in Mass Spectrometry · 2001 · 75 citations

Life Sciences, Biochemistry, Chemistry +15

Fragmentation of aromatic sulfonamides in electrospray ionization mass spectrometry: elimination of SO₂ via rearrangement

Mingjiang Sun, Wenning Dai, David Q. Liu · Journal of Mass Spectrometry · 2007 · 69 citations

Natural Sciences, Chemistry, Medicinal Chemistry +14