6-Diazo-5-oxo-L-norleucine (S8620-GRP)

6-Diazo-5-oxo-L-norleucine (Diazooxonorleucine, L-6-Diazo-5-oxonorleucine, DON), an antibiotic isolated from Streptomyces, is a glutaminase antagonist with IC50 of ~1  mM for cKGA (kidney-type glutaminase). 6-Diazo-5-oxo-L-norleucine exhibits analgesic, antibacterial, antiviral and anticancer properties.