| 1 | 665-01-0 | Propanedinitrile, difluoro- | C3F2N2 | 102.0423064 | | |
| 2 | 665-03-2 | methyl ethylphosphonofluoridate | C3H8FO2P | 126.07 | | |
| 3 | 665-04-3 | 2-azaspiro[3.3]heptane | C6H11N | 97.16 | | |
| 4 | 665-05-4 | 2-Methyl-4-trifluoromethyl-5,5,5-trifluoro-1-pentene-4-ol | C7H8F6O | 222.13 | | |
| 5 | 665-16-7 | Ethane, pentafluoro(trifluoromethoxy)- | C3F8O | 204.02 | | |
| 6 | 665-31-6 | 2,2-Difluorosuccinic Acid | C4H4F2O4 | 154.07 | 139-144 | |
| 7 | 665-33-8 | Phosphonofluoridic acid, (1-methylethyl)-, 1-methylethyl ester | C6H14FO2P | 168.1463242 | | |
| 8 | 665-35-0 | 1,1,2,2-TETRAFLUOROETHYLTHIOACETIC ACID | C4H4F4O2S | 192.13 | | |
| 9 | 665-41-8 | 2-azaspiro[3.4]octane | C7H13N | 111.19 | | |
| 10 | 665-46-3 | tetraethylammonium fluoride | C8H24FNO2 | 185.28 | 80 °C (decomp) | |
| 11 | 665-49-6 | Tetraethylphosphoniumtetrafluoroborate | C8H20BF4P | 234.02 | 300-302°C | Slightly soluble in water |
| 12 | 665-66-7 | 1-Adamantanamine hydrochloride | C10H18ClN | 187.71 | >300°C(lit.) | soluble |
| 13 | 665-67-8 | Phosphinic acid, di-2-propenyl-, 1-methylethyl ester (9CI) | C9H17O2P | 188.2 | | |
| 14 | 665-69-0 | Phosphinic acid, di-2-propenyl-, propyl ester (9CI) | C9H17O2P | 188.2 | | |
| 15 | 665-77-0 | Phosphinic acid, di-2-propenyl-, pentyl ester (9CI) | C11H21O2P | 216.26 | | |
| 16 | 665-81-6 | 4-Pentenenitrile, 3-hydroxy-3-methyl- | C6H9NO | 111.14176 | | |
| 17 | 665-98-5 | BIS(3,3,3-TRIFLUOROPROPYL)DICHLOROSILANE | C6H8Cl2F6Si | 293.11 | | |