Threonine is an essential amino acid with essentially no perfumery odor profile. In isolation it is nearly odorless, occasionally described as having a very faint, slightly sweet or brothy note when heated. It is not a standard fragrance raw material.AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 1306.
White crystals or powder.
Soluble in water, insoluble in absolute alcohol and oils.
Practically odorless when pure, but may carry faint odor depending upon method of production.
Mild and sweet, nondescript taste in concentrations near 1000 ppm.
It has also been used occasionally as part of Maple flavor complexes.
1) by isolation from natural proteins. 2) synthetic (many methods) e.g.: from ethyl acetoacetate by nitrosation, followed by reduction, treatment with thionyl chloride and finally hydrolysis.