PF-04859989 HCl is a brain-penetrable irreversible inhibitor of kynurenine amino transferase II (KAT II), the enzyme responsible for most of the brain synthesis of kynurenic acid. PF-04859989 HCl has been implicated in several psychiatric and neurological disorders, including schizophrenia and bipolar disorder.

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.