| 1 | 252-01-7 | Thiazolo[3,2-d]tetrazole | C3H2N4S | 126.14 | | |
| 2 | 252-09-5 | 1,6-Dithia-6a-thia(IV)pentalene | C5H4S3 | 160.28 | | |
| 3 | 252-10-8 | 2,4-DIFLUORO-1-METHOXYBENZENE | C6H8N2 | 108.14 | | |
| 4 | 252-23-3 | Benzo[3,4]cyclobuta[1,2-l]phenanthrene | C20H12 | 252.31 | | |
| 5 | 252-24-4 | Dibenzo[a,i]biphenylene | C20H12 | 252.31 | | |
| 6 | 252-36-8 | Cyclobuta[1,2-a:4,3-a']diindene (8CI,9CI) | C18H10 | 226.27 | | |
| 7 | 252-44-8 | Dibenzo[a,g]biphenylene | C20H12 | 252.31 | | |
| 8 | 252-47-1 | Benzo[a]biphenylene | C16H10 | 202.25 | 72.0-72.8 °C | |
| 9 | 252-49-3 | 1,4-Methanobiphenylene (8CI,9CI) | C13H8 | 164.2 | | |
| 10 | 252-60-8 | Naphth[1,8-bc]oxete | C10H6O | 142.15 | | |
| 11 | 252-69-7 | Dibenzo[a,e]cycloocten-5,11-imine (8CI,9CI) | C16H11N | 217.27 | | |
| 12 | 252-72-2 | 6,12-EPOXY-6H,12H-DIBENZO[B,F][1,5]DIOXOCIN | C14H10O3 | 226.23 | | |
| 13 | 252-73-3 | 6H,12H-5,11-Methanodibenzo[b,f][1,5]diazocine | C15H14N2 | 222.29 | 136.5-137.0 °C | |
| 14 | 252-78-8 | 5,8-Methano-5H-benzocycloheptene | C12H10 | 154.21 | | |
| 15 | 252-99-3 | 3-QUINOLINEMETHANOL | C10H9NO | 159.18 | 65-67 °C | |