Rosmarinic acid

迷迭香酸

Also known as: (R)-Rosmarinic acid, Rosmarinate, Labiatenic acid, Rosemaric acid, Rosemary acid, MFCD00017740, (2R)-3-(3,4-Dihydroxyphenyl)-2-{[(2E)-3-(3,4-dihydroxyphenyl)-2-propenoyl]oxy}propanoic acid, 3,4-Dihydroxycinnamic acid (R)-1-carboxy-2-(3,4-dihydroxyphenyl)ethyl ester, (R)-O-(3,4-Dihydroxycinnamoyl)-3-(3,4-dihydroxyphenyl)lactic acid, R-(+)-2-(3,4-Dihydroxycinnamoyloxy)-3-(3,4-dihydroxyphenyl)propionic acid

Rosmarinic acid (CAS 20283-92-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C18H16O8 and a molecular weight of 360.315 g/mol. It is also known as (R)-Rosmarinic acid, Rosmarinate and Labiatenic acid. Key properties include a melting point of 171-175 °C(lit.), a boiling point of 694.7±55.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 254.5±25.0 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
20283-92-5
Jingsj CID
J-3360-2
Molecular Formula
C18H16O8
Chinese Name
迷迭香酸
Molecular Weight
360.315 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point171-175 °C(lit.)
Boiling Point694.7±55.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point254.5±25.0 °C

GHS Safety & Compliance

Acute Toxicity / Environmental HazardSignal word: Danger

Frequently Asked Questions

What is the CAS number of Rosmarinic acid?

The CAS number of Rosmarinic acid is 20283-92-5.

What are the molecular formula and molecular weight of Rosmarinic acid?

Rosmarinic acid has molecular formula C18H16O8 and molecular weight 360.315 g/mol.

Is Rosmarinic acid hazardous?

Rosmarinic acid has GHS signal word Danger.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Rosmarinic acid (CAS 20283-92-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3360-2 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.