L-NMMA is the archetypal competitive NOS inhibitor to which other inhibitors are often compared. It is a relatively non-selective inhibitor of all NOS isoforms. The Ki values for nNOS (rat), eNOS (human), and iNOS (mouse) are approximately 0.18, 0.4, and 6 μM, respectively.
A potent inhibitor of NO synthase of adrenal glands, brain, and vascular endothelial cells
Reagent to inhibit nitric oxide production in biological systems.
Nitric oxide synthase inhibitor
Competitive, irreversible inhibitor of all three NOS isoforms.
NG-Methyl-L-arginine is an inhibitor of nitric oxide synthase in neurons, endothelial cells, and macrophages. It inhibits endothelium-derived relaxing factor and promotes contraction in pulmonary artery and vein. It stereo selectively inhibits the generation of nitric oxide (NO) from arginine. It promotes epinephrine and glucose levels, contributing to hyperglycemia in central nervous system.
