tetrahydrocorticosterone tetrahydrocorticosterone 3α,5α-tetrahydrocorticosterone (3α,5α-thb), or simply tetrahydrocorticosterone (thb or thcc), is an endogenous glucocorticoid hormone. tetrahydrocorticosterone names iupac name 3α,11β,21-trihydroxy-5β-pregnan-20-one systematic iupac name 1-phenanthren-1-yl]-2-hydroxyethan-1-one other names 3α,5α-tetrahydrocorticosterone; 5β-pregnane-3α,11β,21-triol-20-one identifiers cas number 68-42-8 y 3d model (jsmol) interactive image chemspider 17215927 echa infocard 100.000.627 pubchem cid 65553 unii puw84k2lec y inchi inchi=1s/c21h34o4/c1-20-8-7-13(23)9-12(20)3-4-14-15-5-6-16(18(25)11-22)21(15,2)10-17(24)19(14)20/h12-17,19,22-24h,3-11h2,1-2h3/t12-,13-,14+,15+,16-,17+,19-,20+,21+/m1/s1key: rhqqhzquamfinj-dtdwnvjfsa-n smiles c12c(o)3(cc4c(o)cc43c)1cc2c(=o)co properties chemical formula c21h34o4 molar mass 350.499 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references