GSK-J2 sodium, the sodium form of GSK-J2, is an isomer of GSK-J1 and lacks specific activity. GSK-J1 is a potent inhibitor of H3K27me3 me2-demethylases JMJD3 KDM6B and UTX KDM6A [1].
2-Deacetoxytaxinine J shows significant in vitro activity against breast cancer cell line at a concentration of 20 microM and 10 microM in MCF-7 and MDA-MB-231 respectively.