L-Gulose is an unnatural monosaccharide. L-Gulose is the putative furanose form of L-sorbosone that exists as a syrup with a sweet taste. It is an L-hexose sugar and an intermediate in the biosynthesis of L-Ascorbate (vitamin C).

D-Cycloserine is an analog of the amino acid D-alanine.

BMS-502 is a potent dual inhibitor of diacylglycerol kinase (DGK) α and ζ that induces immune responses in human and mouse T cells and blocks intracellular checkpoint signaling in T cells.