Methyl 4-hydroxyphenylacetate

Methyl 4-hydroxyphenylacetate (CAS No.: 14199-15-6) is a phenylacetic acid ester derivative bearing a phenolic functional group, commonly identified as a naturally occurring small molecule formed via esterification of 4-hydroxyphenylacetic acid with methanol, and is widely utilized in biochemical and pharmacological research as a versatile intermediate and probe compound. Its structural features enable participation in enzymatic transformations, particularly within esterase-mediated pathways and redox-related metabolic processes, making it valuable for investigating enzyme–substrate interactions and metabolic flux. Reported studies indicate that this compound exhibits inhibitory activity against tobacco mosaic virus, supporting its relevance in plant virology models and antiviral mechanism studies, while its broader utility extends to structure–activity relationship analyses and the development of enzyme inhibitors. In vitro investigations typically assess its activity within low micromolar to higher concentration ranges depending on assay conditions, although precise potency values may vary across experimental systems. Additionally, it is frequently employed in natural product synthesis workflows and as a reference or intermediate in elucidating biosynthetic and metabolic pathways. Experimental applications span cell-free enzymatic assays, cell-based models, and plant systems, where concentrations are selected according to specific study designs and analytical objectives.