(7S,11S,12S,13S,14R,15R,16R,17S,18S,19Z,21Z)-26-[(E)-(4-cyclopentylpiperazin-1-yl)iminomethyl]-2,13,15,17,27,29-hexahydroxy-11-methoxy-3,7,12,14,16,18,22-heptamethyl-8,30-dioxa-24-azatetracyclo[23.3.1.14,7.05,28]triaconta-1(29),2,4,9,19,21,25,27-octaene-6,23-dione
25-desacetylrifapentine is under investigation in clinical trial NCT00023387 (TBTC Study 25PK: Intensive Pharmacokinetic Study of Three Doses of Rifapentine and 25-Desacetyl Rifapentine).