trans,cis-2,6-Nonadienal TCI N0836

trans,cis-2,6-Nonadienal from TCI (catalogue number N0836) is a nine-carbon aliphatic aldehyde with two double bonds. The double bond at position 2 has the trans configuration and the one at position 6 has the cis configuration. In aroma chemistry, it is known for giving the fresh note typical of cucumber and violet leaf. In the laboratory, it serves as a non-heterocyclic building block for organic synthesis. It is also used as a reference standard when analysing volatile compounds in foods, beverages, and natural materials.

Researchers choose this compound because its structure combines a reactive α,β-unsaturated aldehyde with an isolated cis double bond. The conjugated aldehyde can undergo nucleophilic addition, reduction, and condensation reactions. The geometry of the double bonds shapes the aroma character and the physicochemical properties of the molecule. Because its trans,cis configuration is well defined, the compound is a valuable isomer reference in gas chromatography. It is also a product of the lipoxygenase pathway acting on unsaturated fatty acids, which makes it relevant to plant biochemistry research.

In Indonesia, trans,cis-2,6-Nonadienal suits food technology laboratories, flavour and fragrance research groups, and quality control laboratories that profile volatile compounds. University chemistry departments can use it in synthesis work that needs a defined non-heterocyclic unsaturated aldehyde. Agricultural and plant science laboratories studying fresh produce aroma can use it to track lipoxygenase-derived volatiles. The TCI brand gives these users a consistent, well-documented source of material for routine and research work.

• Gas chromatography reference standard: the defined trans,cis configuration lets analysts confirm retention behaviour and tell this isomer apart from related nonadienal isomers in volatile profiles.
• Flavour and fragrance research: the compound's fresh cucumber and violet leaf character makes it a useful reference when studying or reproducing green, fresh aroma notes in formulations.
• Food and beverage volatile analysis: quality control laboratories can use it as a comparison standard when identifying and monitoring aroma-active aldehydes in food, drink, and natural product samples.
• Organic synthesis building block: the conjugated aldehyde allows nucleophilic addition, reduction, and condensation, while the isolated cis double bond provides a second site for further structural work.
• Plant biochemistry studies: as a product of the lipoxygenase pathway from unsaturated fatty acids, it helps researchers study how plants form volatiles and how fresh produce develops aroma.

Unsaturated aldehydes such as trans,cis-2,6-Nonadienal can oxidise or isomerise when exposed to air, light, or heat. Keep the product in its original, tightly closed container, preferably under an inert gas such as nitrogen or argon once opened. Store it in a cool, dry, dark place away from oxidising agents, strong bases, and sources of ignition. Follow any temperature instructions on the TCI label. Handle it in a fume hood while wearing chemical-resistant gloves, safety glasses, and a lab coat, and avoid breathing vapours or letting it touch skin and eyes. To protect isomeric integrity for analytical work, reseal containers promptly after use. Read the Safety Data Sheet before first use and dispose of waste according to local regulations.

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