... name: 5-hydroxy-2-hydroxymethyl-1,4-pyroneCAS NO. : 501-30-4 EINECS NO.: 207-922-4Molecular Formula: C6H6O4 ... 142.11Structural Formula: Quality standard of Kojic acid, CAS: 501-30-4 ItemSpecificationResultsAppearanceWhite or off white crystalWhite or off white ... , ppm100max 40ConclusionComplies with standard.Introduction of Kojic acid, CAS: 501-30-41). Kojic acid, (5-hydroxy-2-hydroxymethyl-1, ...