14187-32-7 2,3:11,12-Dibenzo-1,4,7,10,13,16-hexaoxacyclooctadecane 54765-16-1 6,7,9,10,17,18,20,21-Octahydrodibenzo(b,k)(1,4,7,10,13,16)hexaoxacyclooctadecin 63172-39-4 66105-26-8 73128-69-5 BRN 1162153 Crown 18 DIBENZO-18-CROWN-6 Dibenzo(a,j)-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene Dibenzo(b,k)(1,4,7,10,13,16)hexaoxacyclooctadecane Dibenzo(b,k)(1,4,7,10,13,16)hexaoxacyclooctadecin, 6,7,9,10,17,18,20,21-octahydro- Dibenzo-18-crown-6-ether Dicyclohexano-18-crown-6 EINECS 238-041-3 NSC 147771