2,3-Dihydro-2-methoxy(4H)pyran 2-Methoxy-3,4-dihydro-2H-pyran 2H-Pyran, 3,4-dihydro-2-methoxy- 3,4-Dihydro-2-methoxy-2H-pyran 4454-05-1 5-17-03-00196 (Beilstein Handbook Reference) 71709-46-1 BRN 0107274 EINECS 224-698-3 MDP NSC 44974