ACROS Organics (S)-(+)-gamma-Hydroxymethyl-gamma-butyrolactone， 97% and others

ACROS Organics 2-Hydroxy-gamma-butyrolactone， 99% and others

ACROS Organics alpha-Methylene-gamma-butyrolactone， 95%， stabilized and others

Alfa Aesar (±)-BETA-HYDROXY-GAMMA-BUTYROLACTONE， 96% and others

ACROS Organics alpha-Amino-gamma-butyrolactone hydrobromide， 99% and others

ACROS Organics (S)-(-)-ALPHA-AMINO-GAMMA-BUTYROLACTONE HYDROBROMIDE， 99% and others

Alfa Aesar ^y-Phenyl-^y-butyrolactone， 97% and others