- Thymine dimer
- Cyclobutadithymine
- cis-syn-Thymine dimer
- チミンダイマー
- シクロブタジチミン
- cis-syn-チミンダイマー
- 1,4a,4b,8,8aα,8bα-Hexahydro-4aα,4bα-dimethylcyclobuta[1,2-d:4,3-d′]dipyrimidine-2,4,5,7(3H,6H)-tetrone
- 4aβ,4bβ-Dimethyl-4a,4b,8aβ,8bβ-tetrahydrocyclobuta[1,2-d:4,3-d′]dipyrimidine-2,4,5,7(1H,3H,6H,8H)-tetrone
- 5β,6β-[2,4(1H,3H)-Dioxo-5,6-dihydro-5-methylpyrimidine-5α,6α-diyl]-5-methyl-5,6-dihydropyrimidine-2,4(1H,3H)-dione
- 4aα,4bα-Dimethyl-4a,4b,8aα,8bα-tetrahydrocyclobuta[1,2-d:4,3-d′]dipyrimidine-2,4,5,7(1H,3H,6H,8H)-tetraone