English Vocabulary Flash Cards - Chemical Formulas @ englishpdf.com and englishteststore.com File 050 C10H22 decane C11H12N2O2 tryptophan C11H24 undecane C12H10 biphenyl C12H22O11 maltose or sucrose C12H26 dodecane C13H10O benzophenone C13H12O β-ionone