3-Amino-5-Hydroxybenzoic Acid is a marine derived natural products found in Salinispora arenicola.

O-Acetylserine (OASS) is an acylated amino acid derivative. It is an intermediate in the biosynthesis of the common amino acid cysteine in bacteria and plants. Its presence in humans arises from either microbial metabolism in the gut or through consumption of foods containing OASS.

HLM006474 is a pan inhibitor of E2F. This inhibits E2F4 DNA-binding (IC50: 29.8 μM in A375 cells).HLM006474 causes the viability of both SCLC and NSCLC lines (IC50 ranging from 15 to 75 μM). HLM006474 displays little activities against E2F4 DNA-binding in A375 cells at 10 and 20 μM, apparently inhibits E2F4 DNA-binding at 40 μM, and increasingly suppresses the effect at 60 and 80 μM concentrations.