| No | Name | Structure | Note | | 1 | 4-Phenyl-2-pyrrolidinone |  | 1198-97-661548-72-962624-45-7 | | 2 | 4-(4`-Methoxyphenyl)-2-pyrrolidinone |  | 103859-86-5 | | 3 | 4-(4`-Chlorophenyl)-2-pyrrolidinone |  | 22518-27-0123632-28-0123632-31-5 | | 4 | 4-(4`-Fluorophenyl)-2-pyrrolidinone |  | | | 5 | 4-(2`-Trifluoromethylphenyl)-2-pyrrolidinone |  | | | 6 | 4-(3`-Trifluoromethylphenyl)-2-pyrrolidinone |  | | | 7 | 4-(3`-Fluorophenyl)-2-pyrrolidinone |  | | | 8 | 4-(2`-Fluorophenyl)-2-pyrrolidinone |  | | | 9 | 4-(3`-Methoxyphenyl)-2-pyrrolidinone |  | 38175-34-7 | | 10 | 4-(2`-Methoxyphenyl)-2-pyrrolidinone |  | | | 11 | 4-(3`-Chlorophenyl)-2-pyrrolidinone |  | | | 12 | 4-(2`-Chlorophenyl)-2-pyrrolidinone |  | |
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