| 1 | 166-06-3 | Spiro[1,3-dioxolane-2,8'-[4,7]methano[1H]indene](9CI) | Spiro[1,3-dioxolane-2,8'-[4,7]methano[1H]indene](9CI) | C12H10O2 | | |
| 2 | 166-08-5 | Spiro[cyclopentane-1,9'-[1,4:5,8]dimethanonaphthalene] (8CI,9CI) | Spiro[cyclopentane-1,9'-[1,4:5,8]dimethanonaphthalene] (8CI,9CI) | C16H14 | | |
| 3 | 166-09-6 | 4H-10,12a-Methanocyclopenta[3,4]heptaleno[2,3-d]-1,3-dioxole (8CI,9CI) | 4H-10,12a-Methanocyclopenta[3,4]heptaleno[2,3-d]-1,3-dioxole (8CI,9CI) | C17H14O2 | | |
| 4 | 166-42-7 | Spiro[9H-fluorene-9,4'-[1,2]thiazetidine] (9CI) | Spiro[9H-fluorene-9,4'-[1,2]thiazetidine] (9CI) | C14H11NS | | |
| 5 | 166-52-9 | | Piceno[12a,12b-b]oxirene (9CI) | C22H14O | | |
| 6 | 166-57-4 | | Dispiro[1,3-dioxolane-2,2'-[2H]naphth[2',1':4,5]oxireno[3a,4]indeno[2,1-b]furan-8'(7'H),2''-[2H]pyran] (8CI,9CI) | C25H18O5 | | |
| 7 | 166-64-3 | 2a,6a-Epoxy-2,7-methanonaphth[2,3-b]oxirene(9CI) | 2a,6a-Epoxy-2,7-methanonaphth[2,3-b]oxirene(9CI) | C11H6O2 | | |
| 8 | 166-71-2 | 2,4,6-三甲酯苯乙酮 | 2 4 6-TRIMETHYLACETOPHENONE | C18H14 | | |
| 9 | 166-91-6 | Spiro[thiirane-2,9'-[9H]xanthene] (9CI) | Spiro[thiirane-2,9'-[9H]xanthene] (9CI) | C14H10OS | | |