cis-Vaccenic acid

Also known as: (Z)-11-octadecenoic acid, 11-cis-Octadecenoic acid, 11Z-Octadecenoic acid, cis-11-Octadecenoic acid, cis-11-Vaccenic acid, asclepic acid, MFCD00063187

cis-Vaccenic acid (CAS 506-17-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C18H34O2 and a molecular weight of 282.461 g/mol. Key properties include a melting point of 14-15ºC(lit.), a boiling point of 398.2±11.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 295.0±14.4 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 506-17-2
Jingsj CID: J-25780-7
Molecular Formula: C₁₈H₃₄O₂
Molecular Weight: 282.461 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	14-15ºC(lit.)
Boiling Point	398.2±11.0 °C at 760 mmHg
Density	0.9±0.1 g/cm3
Flash Point	295.0±14.4 °C
Exact Mass	282.255890
PSA	37.30000
LogP	7.70
Appearance	oil
Vapor Pressure	0.0±2.0 mmHg at 25°C
Refractive Index	1.467

GHS Safety & Compliance

IrritantSignal word: Warning

H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

Activity & Biological Data

Additional Information	[1]. H Hirotani, et al. Inactivation of T5 phage by cis-vaccenic acid, an antivirus substance from Rhodopseudomonas capsulata, and by unsaturated fatty acids and related alcohols. FEMS Microbiol Lett. 1991 Jan 1;61(1):13-7. [2]. Idowu A Aimola, et al. Cis-vaccenic acid induces differentiation and up-regulates gamma globin synthesis in K562, JK1 and transgenic mice erythroid progenitor stem cells. Eur J Pharmacol. 2016 Apr 5;776:9-18.

Additional Information

[1]. H Hirotani, et al. Inactivation of T5 phage by cis-vaccenic acid, an antivirus substance from Rhodopseudomonas capsulata, and by unsaturated fatty acids and related alcohols. FEMS Microbiol Lett. 1991 Jan 1;61(1):13-7. [2]. Idowu A Aimola, et al. Cis-vaccenic acid induces differentiation and up-regulates gamma globin synthesis in K562, JK1 and transgenic mice erythroid progenitor stem cells. Eur J Pharmacol. 2016 Apr 5;776:9-18.

Customs & Trade Information

HS Code	2916190090
Summary	2916190090 unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tariff:6.5%。general tariff:30.0%

Frequently Asked Questions

What is the CAS number of cis-Vaccenic acid?

The CAS number of cis-Vaccenic acid is 506-17-2.

What are the molecular formula and molecular weight of cis-Vaccenic acid?

cis-Vaccenic acid has molecular formula C18H34O2 and molecular weight 282.461 g/mol.

Is cis-Vaccenic acid hazardous?

cis-Vaccenic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of cis-Vaccenic acid?

For cis-Vaccenic acid, Upstream Products: Heptanal, 1-Bromohexane, 11-Dodecyn-1-ol; Downstream Products: Heptanal, trans-Vaccenic acid, trans-Vaccenic acid methyl ester.

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

Last updated: 8/21/2026

How to cite: Jingsj. "cis-Vaccenic acid (CAS 506-17-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-25780-7 (accessed 2026-11-09).

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