Synonyms: BRN 3172504;17,19,21-Trihydroxyprogesterone;17,19,21-Trihydroxypregn-4-ene-3,20-dione;Pregn-4-ene-3,20-dione, 17,19,21-trihydroxy-;AC1L43PY;LS-118728;4-08-00-03434 (Beilstein Handbook Reference);(8R,9S,10S,13S,14S,17R)-17-hydroxy-17-(2-hydroxyacetyl)-10-(hydroxymethyl)-13-methyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-3-one;510-65-6