9-cis,11-trans-Octadecadienoic acid
CAS 2540-56-9
Formula C18H32O2
MW 280.45 g/mol
Organic Acids Food & NutritionAgriculture & FeedPharmaceuticals & Healthcare Antioxidant & Stabilizer
Description
9-cis,11-trans-Octadecadienoic acid (CAS 2540-56-9), also known as rumenic acid or CLA 9c,11t, is a naturally occurring conjugated linoleic acid isomer found primarily in ruminant-derived fats. It carries no assigned E-code and is distinct from synthetic CLA blends by its defined geometric configuration.
In food and nutrition research, rumenic acid is studied for its role in modulating lipid oxidation pathways, where its conjugated diene system enables selective radical scavenging under controlled conditions. In pharmaceutical and feed applications, it serves as a reference standard or active component in formulations targeting metabolic and immune-related endpoints.
This material is supplied as a neat research-grade fatty acid for laboratory and formulation use. Procurement should confirm compliance with applicable REACH registration obligations for the intended use volume and jurisdiction. Packaging formats are available on request; buyers are advised to specify purity requirements at the time of inquiry.
In food and nutrition research, rumenic acid is studied for its role in modulating lipid oxidation pathways, where its conjugated diene system enables selective radical scavenging under controlled conditions. In pharmaceutical and feed applications, it serves as a reference standard or active component in formulations targeting metabolic and immune-related endpoints.
This material is supplied as a neat research-grade fatty acid for laboratory and formulation use. Procurement should confirm compliance with applicable REACH registration obligations for the intended use volume and jurisdiction. Packaging formats are available on request; buyers are advised to specify purity requirements at the time of inquiry.
Physical Properties
| Boiling Point | 381.6±11.0 °C(Predicted) |
| Density | 0.911±0.06 g/cm3(Predicted) |
| Color | Colorless to light yellow |
| Form | neat |
| Refractive Index | n20/D1.481 |
Trade & Regulatory
| UN Number | 1230 |
| ADR Class | 3 |
| Packing Group | II |
| Storage Class | 10 - Combustible liquids |
| WGK (Germany) | 3 |
Other Names
Conjugated Linoleic Acid (9Z,11E)(9Z,11E)-octadeca-9,11-dienoic acidRumenic Acidcis-9,trans-11-CLAC18:2, n-7,9 trans,cis13-KODE13-OXOODE9Z,11E-CLARUMENICACID
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