Rosmarinic Acid
Item № 70900
CAS № 20283-92-5
Purity ≥98%
product image
5 mg $12.00 $0.00
10 mg $23.00 $0.00
50 mg $96.00 $0.00
100 mg $168.00 $0.00

Pricing updated 2015-11-26. Prices are subject to change without notice.

Bulk Inquiry Form


Enter number, size, and select unit. Example: 2 x 500 mg

Please indicate any analytical testing requirements, special handling, packaging, or delivery requirements.


Rosmarinic acid is a naturally-occurring phenolic compound with antioxidant and anti-inflammatory properties. This compound inhibits lipid peroxidation of rat liver microsomes by 90% at a concentration of 25 µg/ml.1 Rosmarinic acid suppresses endotoxin-induced activation of complement and concomitant formation of prostacyclin.2,3 Formation of 5-HETE and LTB4 from human PMNL is inhibited by rosmarinic acid at concentrations of 10-5 to 10-3 M.4

Download Product Insert Download Safety Data Sheet (SDS)

Related Products

Show all 6 Hide all but first 3

View Related Product Categories
View Screening Libraries with Rosmarinic Acid
Technical Information
Formal Name (R)-α-[[3-(3,4-dihydroxyphenyl)-1-oxo-2E-propenyl]oxy]-3,4-dihydroxy-benzenepropanoic acid
CAS Number 20283-92-5
Molecular Formula C18H16O8
Formula Weight 360.3
Purity ≥98%
Formulation A crystalline solid
λmax 221, 291, 332 nm
SMILES OC1=C(O)C=CC(C[C@H](C(O)=O)OC(/C=C/C2=CC(O)=C(O)C=C2)=O)=C1
InChI Code 1S/C18H16O8/c19-12-4-1-10(7-14(12)21)3-6-17(23)26-16(18(24)25)9-11-2-5-13(20)15(22)8-11/h1-8,16,19-22H,9H2,(H,24,25)/b6-3+

WARNING - This product is not for human or veterinary use.

Shipping & Storage
Storage Room temperature
Shipping Room temperature in continental US; may vary elsewhere
Stability 1 year
Product Downloads & Resources
Product Downloads

Download Product Insert 109 Kb PDF

Download Safety Data Sheet (SDS) 26 Kb PDF

Download free InChI Key generation software

Additional Information

View the Cayman Structure Database for chemical structure definitions for many Cayman products

Get Batch-Specific Data and Documents by Batch Number

Separate multiple batch numbers with commas

QC Sheets
Certificates of Analysis
References & Background Reading
Product Description References

1. Liu, G., Zhang, T., Wang, B., et al. Protective action of seven natural phenolic compounds against peroxidative damage to biomembranes. Biochem Pharmacol 43 147-152 (1992).

2. Bult, H., Herman, A.G., and Rampart, M. Modification of endotoxin-induced haemodynamic and haematological changes in the rabbit by methylprednisolone, F(ab')2 fragments and rosmarinic acid. Br J Pharmacol 84 317-327 (1985).

3. Rampart, M., Beetens, J.R., Bult, H., et al. Complement-dependent stimulation of prostacyclin biosynthesis: Inhibition by rosmarinic acid. Biochem Pharmacol 35 1397-1400 (1986).

4. Kimura, Y., Okuda, H., Okuda, T., et al. Studies on the activities of tannins and related compounds, X. Effects of caffeetannins and related compounds on arachidonate metabolism in human polymorphonuclear leukocytes. J Nat Prod 50 392-399 (1987).

Technical Support
Contact Us
  • To streamline the process attach the appropriate questionnaire to your inquiry.

  • Toll Free Phone (USA and Canada Only): (888) 526-5351
  • Direct Phone: (734) 975-3888
Contract Research Services

We offer you the deep and diverse knowledge of more than 100 in-house scientists and the expertise that comes from more than three decades of designing and developing the tools to advance biomedical research.

Cayman is know as a partner to scientists worldwide, responding to your needs with services in:

Cayman Chemical

1180 East Ellsworth Road

Ann Arbor, Michigan 48108 USA


Please wait...