ortho-Hydroxyphenylacetic acid (2-hydroxybenzeneacetic acid) can be found in a number of food items such as natal plum lemon verbena half-highbush blueberry and parsley which makes ortho-hydroxyphenylacetic acid a potential biomarker for the consumption of these food products. ortho-Hydroxyphenylacetic acid can be found primarily in blood feces and urine.

Tangshenoside I might be a potential bioactive marker related to the hematopoietic and immunologic functions of Codonopsis Radix, which could be recommended as the index compound. It has α-glucosidase inhibition activity.

5-Hydroxy-1,7-bis(4-hydroxyphenyl)heptan-3-yl acetate is a natural product for research related to life sciences.