| 1 | 667-24-3 | 4-Methylsulfonylbenzenesulfonamide | C7H9NO4S2 | 235.28 | | |
| 2 | 667-27-6 | ethyl bromodifluoroacetate | C4H5BrF2O2 | 202.98 | | |
| 3 | 667-29-8 | Trifluoroacetylnitrite | C2F3NO3 | 143.0215096 | | |
| 4 | 667-32-3 | Acetic acid, 2,2,2-trifluoro-, 2-hydroxyethyl ester | C4H5F3O3 | 158.08 | | |
| 5 | 667-34-5 | dl-ethyl panthenol | C6H8F6O2 | 226.12 | | |
| 6 | 667-35-6 | 2,2,2-Trifluoro-N'-(2,2,2-trifluoroacetyl)acetohydrazide | C4H2F6N2O2 | 224.06 | 180-180.5 °C (lit.) | |
| 7 | 667-49-2 | 2,3,3-trifluoroacryloyl fluoride | C3F4O | 128.03 | | |
| 8 | 667-50-5 | Acetamide, 2,2-difluoro-N,N-dimethyl- | C4H7F2NO | 123.1 | | |
| 9 | 667-52-7 | Ethaneselenoamide, 2,2-difluoro-N,N-dimethyl- | C4H7F2NSe | 186.06 | | |
| 10 | 667-63-0 | 2,3-Butanedione, 1,1,1,4,4,4-hexafluoro-, dioxime | C4H2F6N2O2 | 224.06 | | |
| 11 | 667-65-2 | β-Cortol | C21H36O5 | 368.51 | | |
| 12 | 667-66-3 | β-Cortolone | C21H34O5 | 366.49 | | |
| 13 | 667-71-0 | (20S)-20-Amino-5α-pregnan-3β-ol | C21H37NO | 319.52 | 174-175 °C(Solv: water (7732-18-5); ethanol (64-17-5)) | |
| 14 | 667-75-4 | 8-Quinolinesulfonic acid, 3-fluoro- | C9H6FNO3S | 227.21 | | |
| 15 | 667-82-3 | N,N-bis(2-chloroethyl)-2,2,2-trifluoroacetamide | C6H8Cl2F3NO | 238.0350296 | | |
| 16 | 667-83-4 | Pantothenyl ethyl ether | C11H23NO4 | 233.3 | | |
| 17 | 667-84-5 | DL-Pantothenyl ethyl ether | C11H23NO4 | 233.3 | | |
| 18 | 667-89-0 | 4-Pyrimidinamine, 6-fluoro-5-nitro- | C4H3FN4O2 | 158.09 | | |
| 19 | 667-91-4 | 9-BENZHYDRYLIDENE-10-ANTHRONE | C27H18O | 358.43 | 203-207 °C | |
| 20 | 667-92-5 | 8-Dichloroacetyl-5-hydroxy-2,7-dimethyl-1,4-naphthoquinone | C14H10Cl2O4 | 313.13 | | |