AR-C141990 hydrochloride is a potent inhibitor of lactate transporters known as monocarboxylate transporters (MCTs). It has pK i values of 7.6 and 6.6 for MCT-1 and MCT-2, respectively. Additionally, this compound exhibits immunosuppressive properties and effectively inhibits the graft versus host response.
Monocarboxylate transporter (MCT1) inhibitor (pKi = 7.6. Exhibits approximately 10-fold selectivity for MCT1 over MCT2 and no significant activity against MCT3 or 4. Inhibits graft versus host response and prolongs cardiac graft survival in a rat model. Immunosuppressant. Also inhibits brain penetration of GHB analog HOCPCA.