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Description
4-(Hexyloxy)benzaldehyde is an aromatic compound that combines an aldehyde group on a benzene ring with a hexyloxy chain at the para position. This pairing of a highly reactive functional group with a long alkyl chain makes it a particularly useful building block in organic synthesis, especially for assembling elongated, rod-shaped molecules. In the TCI catalogue the product carries the code H0166 and is classified among the non-heterocyclic building blocks. It is supplied as a research chemical for laboratories that construct larger organic frameworks from defined, well-characterised starting materials rather than from crude mixtures.
The property that makes this material stand out is its aldehyde group, which reacts readily with primary amines, active methylene compounds and organometallic reagents, opening up a wide range of transformations in a single reaction step. The hexyloxy chain, meanwhile, gives good solubility in organic solvents and contributes the mesogenic character that is key to liquid crystalline phase formation in the derivatives made from it. The alkoxy ether group is electron-donating and therefore influences the electron distribution across the aromatic ring, a feature researchers exploit when tuning the electronic behaviour of a target molecule.
In Indonesian laboratories this compound is typically used in organic synthesis groups at universities and research institutes, as well as in materials-oriented work. It appears in liquid crystal synthesis, in the preparation of Schiff bases and chalcones, and in the development of optical materials and functional organic molecules. Because it is a defined catalogue item from TCI, it suits work where reproducibility between batches matters, such as method development, thesis research and repeated preparations that must give consistent results.
Laboratory Applications
Liquid crystal synthesis: the para-substituted aldehyde and long hexyloxy tail give the elongated molecular shape and mesogenic character required for building compounds that form liquid crystalline phases.
Schiff base preparation: the aldehyde group condenses readily with primary amines, making this a direct and convenient starting material for imine formation in a single reaction step.
Chalcone synthesis: the reactive aldehyde couples with active methylene compounds, giving laboratories a straightforward entry point into chalcone frameworks and their many downstream derivatives.
Optical and functional materials development: the electron-donating alkoxy ether influences electron distribution on the aromatic ring, which researchers use when tuning the electronic properties of organic materials.
General organic building block work: reactivity toward organometallic reagents plus good solubility in organic solvents makes it a flexible intermediate for multi-step routes toward larger molecular targets.
Specifications
Brand: TCI (Tokyo Chemical Industry), catalogue code H0166
CAS number: 5736-94-7
Chemical name: 4-(Hexyloxy)benzaldehyde
Category: Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
Pack sizes: available in the standard TCI catalogue pack sizes for this item
Storage: keep in the closed original container, following the conditions stated on the product label and Safety Data Sheet
Handling and Storage
Store the compound in its original tightly closed container, kept in a cool, dry and well-ventilated area away from direct sunlight, heat sources and incompatible chemicals. As an aldehyde, it should be protected from prolonged exposure to air and moisture, so the container should be resealed promptly after each use and handled in a fume hood where practicable. Wear a laboratory coat, safety glasses and suitable chemical-resistant gloves during transfer and weighing. Always consult the manufacturer's Safety Data Sheet before use, and dispose of residues and contaminated materials as chemical waste through the laboratory's normal waste-handling procedures rather than into drains.
