IsocyanatesCyanatesPolyurethanesToluene 2,4-DiisocyanatePaintRhodiumAir Pollutants, OccupationalButylaminesTear GasesIndolizidinesOccupational ExposureAutomobilesInhalation ExposureMustard CompoundsEnvironmental MonitoringOccupational DiseasesAlkynesAlveolitis, Extrinsic AllergicCyclizationStereoisomerismChemical Industry