The molecule is an ansamycin that is tanespimycin in which the benzoquinone moiety has been reduced to the corresponding hydroquinone. A semi-synthetic analogue of geldanamycin, it is used (generally as the hydrochloride salt) in cancer treatment. It has a role as a Hsp90 inhibitor and an antineoplastic agent. It is a member of hydroquinones, an ansamycin, an organic heterobicyclic compound, a secondary amino compound, a semisynthetic derivative and a carbamate ester. It derives from a geldanamycin. It is a conjugate base of a retaspimycin(1+).
[(4E,6Z,8S,9S,10E,12S,13R,14S,16R)-13,20,22-trihydroxy-8,14-dimethoxy-4,10,12,16-tetramethyl-3-oxo-19-(prop-2-enylamino)-2-azabicyclo[16.3.1]docosa-1(21),4,6,10,18(22),19-hexaen-9-yl] carbamate