... Cinnamomum cassia PreslPart Used: BarkActive Ingredient: Cinnamon Polyphenols, Cinnamaldehyde, Cinnamic AcidAppearance: Brown-red, brown-yellow fine powderSpecification ... : 5:1, 10:1; Cinnamaldehyde 40%Test Method: HPLC, UVCAS#: 104-55-2Molecular ... leaves and bark. Cinnamon polyphenols, flavonoids and cinnamaldehyde are the major ingredients in cinnamon bark extract ...