Synonyms: 4,7-Methanoindene,3a,4,7,7a-tetrahydro- (7CI,8CI); 3a,4,7,7a-Tetrahydro-4,7-methano-1H-indene;3a,4,7,7a-Tetrahydro-4,7-methanoindene; Bicyclopentadiene; Biscyclopentadiene;Cyclopentadiene dimer; DCPD 103; Dicyclopentadiene; JP 10; NSC 7352; Prometa XP100; Tricyclo[4.3.1.02,5]deca-3,7-diene; Tricyclo[5.2.1.02,6]deca-3,8-diene;Ultrene