| 1 | 657-02-3 | 1,2-Dichloro-3-nitro-5-(trifluoromethyl)benzene | C7H2Cl2F3NO2 | 260 | | |
| 2 | 657-05-6 | 2-Chloro-5-(trifluoromethyl)benzoyl chloride | C8H3Cl2F3O | 243.01 | | |
| 3 | 657-06-7 | 2-chloro-5-(trifluoromethyl)benzoic acid | C8H4ClF3O2 | 224.56 | 93-96 °C (lit.) | |
| 4 | 657-15-8 | 3'-NITRO-2,2,2-TRIFLUOROACETOPHENONE | C8H4F3NO3 | 219.12 | 54.0 to 58.0 °C | |
| 5 | 657-17-0 | Ethanone, 2,2-difluoro-1-(3-nitrophenyl)- | C8H5F2NO3 | 201.13 | | |
| 6 | 657-19-2 | L-Aspartic acid, N-(trifluoroacetyl)-, 1-methyl ester | C7H8F3NO5 | 243.1373296 | | |
| 7 | 657-24-9 | metformin | C4H11N5 | 129.16 | 199-200 °C | |
| 8 | 657-26-1 | L-lysine dihydrochloride | C6H16Cl2N2O2 | 219.11 | 200-206°C(lit.) | Soluble in water (100 mg/ml). |
| 9 | 657-27-2 | L(+)-Lysine monohydrochloride | C6H14N2O2.HCl | 182.65 | 263-264℃ | 65 g/100 mL (20℃) |
| 10 | 657-34-1 | 2,6,7-Trioxabicyclo[2.2.1]heptane | C4H6O3 | 102.09 | | |
| 11 | 657-35-2 | 1,1-difluoro-ethyl-benzene | C8H8F2 | 142.15 | | |
| 12 | 657-36-3 | 4-(trifluoromethyl)piperidine | C6H10F3N | 153.15 | 152-154°C | |
| 13 | 657-37-4 | (fluoro-methyl-phosphoryl)benzene | C7H8FO3P | 190.1087842 | | |
| 14 | 657-40-9 | Phenyldifluorophosphine sulfide | C6H5F2PS | 178.14 | | |
| 15 | 657-46-5 | 1-Fluoro-3-(methylsulfonyl)benzene | C7H7FO2S | 174.19 | | |
| 16 | 657-47-6 | 3-Fluoro-benzenesulfonic acid | C6H5FO3S | 176.17 | | |
| 17 | 657-50-1 | 4(1H)-PYRIMIDINETHIONE, 6-METHYL-2-(TRIFLUOROMETHYL)- | C6H5F3N2S | 194.18 | | |
| 18 | 657-53-4 | 2-Chloro-6-trifluoromethyl-pyrimidine-4-carboxylic acid | C6H3F3N2O3 | 208.09 | | |
| 19 | 657-54-5 | 4-Pyrimidinecarboxylic acid, 1,6-dihydro-6-oxo-2-(trifluoromethyl)- | C6H3F3N2O3 | 208.09 | | |
| 20 | 657-58-9 | 2-ETHYLTHIO-4-HYDROXY-6-TRIFLUOROMETHYLPYRIMIDINE | C7H7F3N2OS | 224.2 | | |
| 21 | 657-59-0 | 1,3,5-Triazine-2,4-diamine, N2-2-propen-1-yl-6-(trifluoromethyl)- | C7H8F3N5 | 219.17 | | |
| 22 | 657-63-6 | N-Formyl-2-Chloro-5-(Trifluoromethyl)Aniline | C8H5ClF3NO | 223.58 | | |
| 23 | 657-64-7 | 2-Bromo-4-(trifluoromethyl)benzyl bromide | C8H5Br2F3 | 317.93 | | |
| 24 | 657-68-1 | 4-AMINO-2-(TRIFLUOROMETHYL)PYRIMIDINE-5-CARBOXAMIDE | C6H5F3N4O | 206.13 | | |
| 25 | 657-78-3 | 3-(TRIFLUOROMETHYL)FORMANILIDE | C8H6F3NO | 189.13 | | |
| 26 | 657-84-1 | Sodium 4-methylbenzenesulfonate | C7H9NaO3S | 196.2 | >300°C | soluble |