Homovanillic acid (Standard) (Vanilacetic acid (Standard)) is the analytical standard of Homovanillic acid (HY-N0384). This product is intended for research and analytical applications. Homovanillic acid (Vanilacetic acid) is a dopamine metabolite found to be associated with aromatic L-amino acid decarboxylase deficiency, celiac disease, growth hormone deficiency, and sepiapterin reductase deficiency[1].