Z-D-Phg-OH (D-Cbz phenylglycine) is a N-blocked amino acids with Kd values of 390 μM and 323 μM for tBuCQN and tBuCQD, respectively[1].
[1]. FrycÁk P, et al. High throughput multiplexed method for evaluation of enantioselective performance of chiral selectors by HPLC-ESI-MS and dynamic titration: cinchona alkaloid carbamates discriminating N-blocked amino acids. Chirality. 2009 Nov;21(10):929-36.
















