TCI H0520 cis-4-Heptenal is an unsaturated seven-carbon aldehyde carrying a double bond in the cis configuration at the fourth position. The compound is widely recognised as a highly influential aroma component, since it occurs naturally in dairy products, butter, and several animal-derived foodstuffs, where it contributes a distinctive creamy aroma character. In the laboratory it serves as a reference compound in aroma analysis, as a comparison standard in gas chromatography–olfactometry work, and as a building block in the synthesis of flavour and fragrance compounds.
The properties that make this material a preferred choice are the combination of a reactive aldehyde group with the cis geometry of its double bond. The cis configuration strongly determines the aroma profile, because the trans isomer delivers a noticeably different odour impression, which makes geometric purity an important consideration in flavour work. The aldehyde group itself opens the way to condensation reactions, reduction to the corresponding alcohol, and oxidation to the acid, so the compound is also useful as a synthetic intermediate. Supplied as a liquid, the material is straightforward to measure out by volume, though it is also sensitive to atmospheric oxidation and to light.
The food and flavour industries in Indonesia continue to grow, and laboratories working in this field increasingly require well-characterised aroma reference materials of this kind. Typical use contexts include flavour research groups, quality control laboratories serving dairy and food processing operations, and academic chemistry departments carrying out aroma profiling and organic synthesis, where a defined cis-configured aldehyde standard supports reliable identification and comparison work.
- Aroma reference standard: used as an identified marker compound in aroma analysis, allowing analysts to confirm the presence and contribution of this creamy-note aldehyde in sample matrices.
- Gas chromatography–olfactometry comparison: serves as a comparison substance during GC–olfactometry runs, where both retention behaviour and perceived odour character are evaluated against the sample.
- Flavour and fragrance synthesis: acts as a building block for preparing flavour and fragrance compounds, with the aldehyde function providing a convenient handle for further chemical elaboration.
- Synthetic intermediate chemistry: the aldehyde group supports condensation reactions, reduction to the corresponding alcohol, and oxidation to the acid, making it a versatile intermediate for organic synthesis work.
- Dairy and food aroma profiling: applied in studies of dairy products, butter, and animal-derived foodstuffs, where this compound occurs naturally and drives the characteristic creamy aroma impression.
| Brand | TCI |
|---|---|
| CAS number | 6728-31-0 |
| Molecular formula | — |
| Purity | — |
| Category | Chemistry > Building Blocks > Non-Heterocyclic Building Blocks |
| Pack sizes | available in the standard TCI catalogue pack sizes for this item |
| Physical form | liquid |
| Storage | keep protected from air and light, as the material is sensitive to oxidation |
Store the container tightly closed in a cool, well-ventilated area, away from direct light and from sources of heat or ignition. Because the compound is sensitive to atmospheric oxidation and to light, amber or otherwise light-protected glass containers with tight-sealing caps are appropriate, and headspace should be kept to a minimum; blanketing with an inert gas after use helps preserve quality over repeated openings. Handle in a fume hood using gloves, safety glasses, and a laboratory coat, dispense the liquid carefully to avoid spills and aerosols, and keep the material separated from strong oxidising agents. Return the container promptly to its designated storage location after use, and follow the safety data sheet supplied with the product for full handling guidance.
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