Polymyxin B, an antibiotic, combats Gram-negative infections through high-affinity binding to the bacterial wall's lipopolysaccharides (LPS), neutralizing endotoxin effects and inducing bacterial cell death by enhancing permeability.

D-Pyroglutamic acid (PCA) is a cyclic derivative of glutamic acid physiologically present in mammalian tissues. It has been shown that PCA releases GABA from the cerebral cortex and displays anti-anxiety effects in a simple approach-avoidance conflict situation in the rat.

(Rac)-5-Keto Fluvastatin is an impurity of Fluvastatin. Fluvastatin is an inhibitor of HMG-CoA reductase(IC50 of 8 nM).