Bis(2-​butoxyethyl) 2-​(3-​Hydroxybutoxy)​ethyl Phosphate Triester is derived from 2-Butoxyethanol (B692895), which is a reagent in the synthesis of 4-butoxyethoxy-N-octadecyl-1,8-naphthalimide as a new fluorescent probe for the determination of proteins. Also used as a reagent in the synthesis of 4-hydroxybenzaldehyde derivatives as tyrosinase inhibitors.