[Condensed pyrans].
D000447:Aldehydes; D000480:Alkynes; D001463:Barbiturates; D055598:Chemical Phenomena; D002621:Chemistry; D003374:Coumarins; D007259:Infrared Rays; D009682:Magnetic Resonance Spectroscopy; D011714:Pyrans / Q000138:chemical synthesis*; D013057:Spectrum Analysis; D013343:Styrenes
D000447:Aldehydes; D000480:Alkynes; D001463:Barbiturates; D003374:Coumarins; D011714:Pyrans; D013343:Styrenes
Kondensierte Pyrane.