3745254 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3745254 > 2 > ChemIDplus > 056446414 > 2,5,11,14-Tetraoxa-19,20-diazatricyclo(13.3.1.1(6,0))eicosa-1(19),6,8,10(20),15,17-hexaene 2,5,11,14-Tetraoxa-19,20-diazatricyclo-(3.3.1.1)icosa-1(19),6,8,10(20),15,17-hexaene 2,6-Pyridinophane 56446-41-4 > 56446-41-4 > 056446414 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=056446414 $$$$