The molecule is a steroid phosphate that is the 21-O-phospho derivative of cortisol. It is a cortisol ester, a steroid phosphate, an 11beta-hydroxy steroid, a 3-oxo-Delta(4) steroid, a 17alpha-hydroxy steroid and a tertiary alpha-hydroxy ketone. It is a conjugate acid of a cortisol phosphate(2-).
[2-[(8S,9S,10R,11S,13S,14S,17R)-11,17-dihydroxy-10,13-dimethyl-3-oxo-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-17-yl]-2-oxoethyl] dihydrogen phosphate