16562-48-4 2(3H)-Furanone, dihydro-3-hydroxy-4,4-dimethyl-, (3R)- 2(3H)-Furanone, dihydro-3-hydroxy-4,4-dimethyl-, (theta)- 599-04-2 631-68-5 EINECS 209-963-3 PANTOLACTONE alpha-Hydroxy-beta,beta-dimethyl-gamma-butyrolactone