Z-L-4-hydroxyproline;N-Z-4-hydroxy-L-proline (trans);N-cbz-hydroxy-L-proline;Z-L-Hyp-OH;N-Carbobenzyloxy-4-hydroxy-L-proline (trans);Cbz-Hyp-OH;z-Hydroxyproline;Z-Hyp-OH;trans-N-Carbobenzoxy-4-hydroxy-L-proline;(2S,4R)-4-Hydroxy-1,2-pyrrolidinedicarboxylic Acid 1-Benzyl Ester;Benzyloxycarbonyl-L-4-hydroxyproline;H-His(Trt)-OH;Z-O-Hyp-OH;CBZ-L-HYDROXYPROLINE;CBZ-L-HYP-OH;N-Cbz-Hydroxy-L-prol;N-Cbz-trans-4-hydroxy-L-proline;trans-N-Cbz-4-hydroxy-L-proline;Z-L-HYDROXYPROLINE;Z-trans-4-hydroxy-L-proline;Z-HYP-OH;;trans-N-Benzyloxycarbonyl-4-hydroxy-L-proline;N-Benzyloxycarbonyl-L-Hydroproline;Z-HYP-OH;Z-L-HYP-OH;CBZ-HYP-OH;Z-HYP(BZL)-OH;Z-HYDROXYPROLINE;Z-L-4-HYDROXYPROLINE