3-Chloro-L-alanine is a bacteriostatic amino acid analog which inhibits a number of enzymes including threonine deaminase and alanine racemase.

Cyclo(Tyr-Leu) is a cyclic dipeptide from Portulaca oleracea Linn with cytotoxicity, antifungal, and anticoagulant activities.

A tetracycline antibiotic that acts by binding to the 30S ribosomal subunit to inhibit binding of aminoacyl tRNA which impairs protein synthesis by bacteria.