English Vocabulary Flash Cards - Chemical Formulas @ englishpdf.com and englishteststore.com File 045 C5H10N2O3 glutamine C5H10O4 deoxyribose C5H11NO2 valine C5H11NO2S methionine C5H12 pentane C6F5COOH pentafluorobenzoic acid C H4 O2 orthobenzoquinone C6H5CHO benzaldehyde