Synonyms: Triptolide, 2-hydroxy-, (2-beta)-;NSC 163063;Tripdiolide;Triptodiolide;Trisoxireno[4b,5:6,7:8a,9]phenanthro[1,2-c]furan-1(3H)-one,3b,4,4a,6,6a,7a,7b,8b,9,10-decahydro-6,10-dihydroxy-8b-methyl-6a-(1-methylethyl)-,[3bS-(3ba,4aa,5aR*,6b,6ab,7ab,7ba,8aR*,8bb,10b)]-;