Rosmarinic acid
Alternative Name(s)
- Rosemary acid
- Rosmarinate
IUPAC Name – (2R)-3-(3,4-dihydroxyphenyl)-2-[(E)-3-(3,4-dihydroxyphenyl)prop-2-enoyl]oxypropanoic acid
Empirical Formula – C18H16O8
Molecular Weight – 360.32
Exact Mass – 360.08
Elemental Analysis – C, 60.00; H, 4.48; O, 35.52
Classification – Hydroxycinnamic Acids

MeSH classification
- Anti-Inflammatory Agents, Non-Steroidal
- Antioxidants
- Platelet Aggregation Inhibitors
- Serine Proteinase Inhibitors
Anti-inflammatory agents that are non-steroidal in nature. In addition to anti-inflammatory actions, they have analgesic, antipyretic, and platelet-inhibitory actions. They act by blocking the synthesis of prostaglandins by inhibiting cyclooxygenase, which converts arachidonic acid to cyclic endoperoxides, precursors of prostaglandins. Inhibition of prostaglandin synthesis accounts for their analgesic, antipyretic, and platelet-inhibitory actions; other mechanisms may contribute to their anti-inflammatory effects.
Naturally occurring or synthetic substances that inhibit or retard the oxidation of a substance to which it is added. They counteract the harmful and damaging effects of oxidation in animal tissues.
Drugs or agents which antagonize or impair any mechanism leading to blood platelet aggregation, whether during the phases of activation and shape change or following the dense-granule release reaction and stimulation of the prostaglandin-thromboxane system.
Exogenous or endogenous compounds which inhibit serine endopeptidases.