6-Biopterin (L-Biopterin), a pterin derivative, is an oxidation product from the melanogenesis regulating cofactor (6R)5,6,7,8 tetrahydrobiopterin (6-BH4).

IC87201, an inhibitor of PSD95-nNOS protein-protein interactions, suppresses NMDAR-dependent NO and cGMP formation.

EIT Hydrobromide is a potent, selective and reversible inhibitor of isoform II NO synthase with IC50 of 13 nM.

3-Bromo-7-nitroindazole is a more potent and selective inhibitor of neuronal nitric oxide synthase (nNOS) than eNOS or inducible nitric oxide synthase (iNOS). 3-Bromo-7-nitroindazole affects the intercellular messenger nitric oxide (NO) synthesis throughout the body and brain.

Mepacrine 2HCl is an acridine-derived yellow dye, previously used in the therapy and prevention of malaria and later as an antiprotozoal and immunomodulatory agent. It's also an inhibitor of phospholipase A2.

Imperatorin is a naturally occuring multiple-target inhibitor of NOS with IC50 value of 9.2 μM, BChE with IC50 value of 31.4 μM, a potent calcium antagonist on vascular smooth muscle. It is also a weak agonist of TRPV1 with EC50 of 12.6±3.2 μM.

L-NMMA acetate is a nitric oxide synthase inhibitor of all NOS isoforms including NOS1, NOS2, and NOS3. The Ki values for nNOS (rat), eNOS (human), and iNOS (mouse) are approximately 0.18, 0.4, and 6 µM, respectively.

Fluorometric CYP450 substrate.

WYC-209 is a RAR agonist which induces apoptosis primarily via the caspase 3 pathway.

SDMA (Symmetric dimethylarginine) is an endogenous inhibitor of nitric oxide (NO) synthase activity.

Asperuloside is an iridoid monoterpenoid glycoside with anti-inflammatory properties.