1,4-Dimethyl-7-ethylazulene 4-05-00-01736 (Beilstein Handbook Reference) 529-05-5 7-Ethyl-1,4-dimethylazulene AZULENE, 1,4-DIMETHYL-7-ETHYL- Azulene, 7-ethyl-1,4-dimethyl- BA 2784 BRN 1306577 Camazulene Chamazulen Chamazulene Dimethulen Dimethulene EINECS 208-449-6