https://www.selleckchem.com/pr....oducts/valproic-acid
In particular, a significant proportion of the compounds observed at the Beijing site contained only C, H and N (CHN), while negligible amounts of CHN were detected at the Gwangju site. The CHN species in Beijing were identified as quinoline compounds and the corresponding -CH2 homologous series using complementary GC × GC-TOF MS analysis. These results suggest that NOCs and their -CH2 homologous series from primary emissions may be significant contributors to nonpolar and semipolar OM during winter in Beijing, while NOCs with hig
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