4-Hydroxyisoleucine (HIL) from fenugreek (Trigonella foenum-graecum) seeds is a potential insulinotropic (anti-diabetic) and anti-obesity amino acid.

Cefazolin is a semi-synthetic cephalosporin that has a broad spectrum of antibacterial activity and inhibits the synthesis of bacterial cell walls.

C004019 is a small molecule PROTAC capable of targeting tau for selective protein degradation from the cell, while recruiting tau and E3 ligase (Vhl) for selective enhancement of tau ubiquitination and proteollyzation. C004019 is a candidate for AD and related tau protein diseases.