D-Pantolactone; Dexpanthenol EP Impurity C; Calcium Pentothenate EP Impurity C; (3R)-3-Hydroxy-4,4-dimethyloxolan-2-one; 3R)-dihydro-3-hydroxy-4,4-dimethyl-2(3H)-Furanone
D-Pantolactone; Dexpanthenol EP Impurity C; Calcium Pentothenate EP Impurity C; (3R)-3-Hydroxy-4,4-dimethyloxolan-2-one; 3R)-dihydro-3-hydroxy-4,4-dimethyl-2(3H)-Furanone