L-NIL HCl is a relatively selective inhibitor of iNOS. It exhibits IC50 values of 0.4-3.3 μM for iNOS as opposed to 8-38 and 17-92 μM for eNOS and nNOS, respectively. L-NIL effectively inhibits iNOS both in vitro and in vivo.4,5,3 L-NIL has been used to demonstrate a critical role for iNOS in the immune response to infection by the protozoan L. major.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.