4-Methoxybenzaldehyde

4-Methoxybenzaldehyde is a colorless or light yellow liquid that solidifies when cooled. Its relative density is 1.119-1.123, refractive index is 1.5710-1.5750, boiling point is 246-248℃, melting point is 1-2.5℃, flash point is above 100℃, slightly soluble in water, miscible in alcohol, ether, soluble in glycerin, miscible with oily fragrances, acid value is less than 6.0. 4-Methoxybenzaldehyde has a clear anise aroma, which is strong and long-lasting.
p-Methoxybenzaldehyde has a characteristic hawthorne odor and a pungent, anise-like flavor. It has a bitter flavor above 30 - 40 ppm. May be prepared by methylation and oxidation of p-cresol and also by oxidation of anethole.
p-Anisaldehyde is a colorless to slightly yellowish liquid with a sweet, mimosa, hawthorn odor. It occurs in many essential oils, often together with anethole. It can be hydrogenated to anise alcohol and readily oxidizes to anisic acid when exposed to air. It is miscible in alcohol, ether, and most fixed oils, soluble in propylene glycol, insoluble in glycerin, water, and mineral oil.
ChEBI: P-methoxybenzaldehyde is a member of the class of benzaldehydes consisting of benzaldehyde itself carrying a methoxy substituent at position 4. It has a role as an insect repellent, a human urinary metabolite, a plant metabolite and a bacterial metabolite.
p-anisaldehyde is an aromatic aldehyde commonly found in anise seed oil. It shows acaricidal activity and is primarily used, as a lead compound for the development of new agents for the selective control of house dust mites.