4-Amino-6-(tert-butyl)-3-mercapto-1,2,4-triazin-5(4H)-one CAS 4548-45-2 3,5-dihydroxypentyl benzene is an important pharmaceutical intermediate, which was first obtained by degrading lichen acid (also known as d-terpinic acid and amyl lichen phenolic acid) extracted from lichen plants. It is mainly used in laboratory research and development processes and chemical production processes.