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4-Methylpyrazole

Methyl 3-oxovalerate

1-Methyl-1H-pyrazol-3-amine

4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzoic acid

5-Methyl-2,3-pyrazinedicarboxylic acid

2-(1-Methyl-2-oxopropyl)-1H-isoindole-1,3-(2H)-dione

Methyl 3-oxohexanoate

5-Methyl-2-pyrazinecarboxylic acid

6-Methyl-4-oxo-5,6-dihydro-4H-thieno[2,3-b]thiopyran-2-sulfonamide