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Dehydroabietic acid

Also known as: Abieta-8,11,13-trien-18-oic acid, Dehydroabietate, (1R,4aS,10aR)-7-isopropyl-1,4a-dimethyl-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carboxylic acid, 1-Phenanthrenecarboxylic acid, 1,2,3,4,4a,9,10,10a-octahydro-1,4a-dimethyl-7-(1-methylethyl)-, (1R,4aS,10aR)-, 13-isopropylpodocarpa-8,11,13-trien-15-oic acid

Dehydroabietic acid (CAS 1740-19-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C20H28O2 and a molecular weight of 300.435 g/mol. Key properties include a melting point of 174-176ºC, a boiling point of 425.1±34.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 202.5±20.3 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed and H410 — Very toxic to aquatic life with long lasting effects. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1740-19-8
Jingsj CID
J-39716-0
Molecular Formula
C20H28O2
Molecular Weight
300.435 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point174-176ºC
Boiling Point425.1±34.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point202.5±20.3 °C
Exact Mass300.208923
PSA37.30000
LogP6.35
AppearanceNA
Vapor Pressure0.0±1.1 mmHg at 25°C
Refractive Index1.540
Storage Conditions?20°C

GHS Safety & Compliance

Acute Toxicity / Environmental HazardSignal word: Danger
  • H301 — Toxic if swallowed
  • H410 — Very toxic to aquatic life with long lasting effects

Activity & Biological Data

Additional Information[1]. Fonseca T, et al. Synthesis and antiviral evaluation of benzimidazoles, quinoxalines and indoles from dehydroabietic acid. Bioorg Med Chem. 2004 Jan 2;12(1):103-12.

Frequently Asked Questions

What is the CAS number of Dehydroabietic acid?

The CAS number of Dehydroabietic acid is 1740-19-8.

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

Dehydroabietic acid has molecular formula C20H28O2 and molecular weight 300.435 g/mol.

Is Dehydroabietic acid hazardous?

Dehydroabietic acid has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H410 — Very toxic to aquatic life with long lasting effects.

What are the upstream and downstream products of Dehydroabietic acid?

For Dehydroabietic acid, Upstream Products: Methyl dehydroabietate, Abietic acid, Geranyl acetate; Downstream Products: Retene, Ecabet, Methyl dehydroabietate.

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

Last updated:

How to cite: Jingsj. "Dehydroabietic acid (CAS 1740-19-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-39716-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.