title: The influence of the second heteroatom on the spectra of 3-alkyl-2-acylmethylenbenzazolines.
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D007211:Indoles / Q000032:analysis*; D007259:Infrared Rays; D013057:Spectrum Analysis
chemical_list: D007211:Indoles