English name: Rosmarinic acid
English alias: Rosemarinic acid; (R) - alpha - [3 - (3, 4 - Dihydroxyphenyl) - 1 - oxo - 2 e - propenyl] foxy - 3, 4 - dihydroxybenzenepropanoic acid
Chemical name: (E) [R], alpha [[3 - (3, 4 - dihydroxy phenyl) - 1 - oxygen generation - 2 - allyl] oxygen radicals] - 3, 4 - dihydroxy benzoic acid
Molecular formula: C18H16O8
Molecular weight: 360.33
CAS No: 20283-92-5

IUPAC name:(2R)-2-[[(2''E'')-3-(3,4-Dihydroxyphenyl)-1-oxo-2-propenyl]]oxy]-3- (3,4- dihydroxyphenyl)propanoic acid

Rosmarinic acid (RosA for short) is an organic compound with chemical formula C18H16O8. It is a water-soluble natural phenolic acid compound isolated from Rosemary in Labiaceae.
Rosmarinic acid is widely distributed, mainly in a variety of plants in the labiaceae family, Comeraceae family, Fenuaceae family, Tilia, umbelliaceae, especially in the labiaceae and Comeraceae plants the highest content.

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