6-tri-n-butylstannyl-2,3-dihydropyran;tri-n-butyl(5,6-dihydro-4H-pyran-2-yl)stannane;Stannane,tributyl(3,4-dihydro-2H-pyran-6-yl);2-(tri(n-butyl)stannyl)-5,6-dihydro-4H-pyran;tributyl-(5,6-dihydro-4H-pyran-2-yl)-stannane;5,6-DIHYDRO-2-(TRIBUTYLSTANNYL)-4H-PYRAN;5,6-dihydro-2-(tributylstannyl)-4H-pyran