English Vocabulary Flash Cards - Chemical Formulas @ englishpdf.com and englishteststore.com File 041 C2H5NO2 glycine or Gly C H5 O− ethoxide ion C2H5OH ethanol or ethyl alcohol (C2H5)2NH diethylamine C H6 ethane C2H6OS dimethyl sulfoxide or DMSO C2O42− oxalate ion C H3 O4 − malonate ion