| 668-94-0 | 4,5-DIPHENYLIMIDAZOLE | C15H12 N2 |
| 668-19-9 | Allococaine | C17H21NO4 |
| 668-17-7 | pyrromycin | C30H35 N O11 |
| 668-14-4 | 11H-Dibenzo[b,e][1,4]dioxepin-7-carboxylicacid, 4-formyl-3,8-dihydroxy-1,6,9-trimethyl-11-oxo- | C18H14 O8 |
| 668-74-6 | Mesochlorin e6 | C34H38N4O6 |