... Vitamin,vitamin P.Chemical Name: 4H-1-Benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-Molecular Formula: C15H10O7Molecular ... .Heavy metals, ppm: 20 max.Ash, %: 0.2 max.Loss on drying, %: 9.5-12.5Assay, %: 99.0 min.MicrobialTotal plate count, pc ...