... :Two years under well Storage situation. L(+)-Ascorbic acid IdentificationName L(+)-Ascorbic acidSynonyms L-Ascorbic acid; Vitamin C; L-Threo-2,3,4,5,6-pentahydroxy ... -1-hexenoic acid-4-lactone Molecular Structure Molecular ... ºCalpha 20.5 º (c=10,H2O)Water solubility 333 g/L (20 ºC)