Alternariol (Standard) is the standard substance of Alternariol, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Alternariol (AOH), a mycotoxin synthesized by Alternaria species, displays numerous therapeutic and biological effects, including phytotoxic, cytotoxic, anti-HIV, anti-cancer, and anti-microbial properties. It functions by inhibiting the catalytic activity of topoisomerase I and II enzymes.