5-Thiazolylmethyl N-[(1R,4R)-4-Amino-5-phenyl-1-(phenylmethyl)pentyl]carbamate is an intermediate in the synthesis of 9-(Desmorpholinylethyl) 7,9-(1-Hydroxyethylene) Cobicistat (D296915), an impurity of Cobicistat (O849600), an HIV protease inhibitor and has been coadministered with low-dose ritonavir (R535000) as a pharmacoenhancer, significantly increasing their plasma concentrations.
