1192-91-2 2H-Pyran, 2-cyano-3,4-dihydro- 2H-Pyran-2-carbonitrile, 3,4-dihydro- 3,4-Dihydro-2-cyano-2H-pyran 5-18-06-00060 (Beilstein Handbook Reference) AI3-50645 BRN 0108788 NSC 527285