2-Hydroxyl emodin-1-methyl ether (Compound 5) is an anthraquinone that can be isolated from the seeds of Cassia obtusifolia.

Emodin bianthrone

RMC-7977 is a highly selective inhibitor of the active (GTP-bound) forms of KRAS, HRAS, and NRAS with anticancer activity for the study of solid tumors with KRAS G12C mutations.