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10-Hydroxycamptothecin

2-Hydroxybutyrophenone

(R)-(+)-3-Hydroxybutyrolactone

(S)-3-Hydroxy-gamma-butyrolactone

(S)-(-)-alpha-Hydroxy-gamma-butyrolactone

3-Hydroxybutyric acid

4-Hydroxybutyl acrylate

3-Hydroxy-2-butanone dimer

3-Hydroxy-2-butanone

4-Hydroxy-2-butanone