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N-Cbz-N-methyl-L-leucine Cbz-N-methyl-L-phenylalanine Z-MEILE-OH Z-NVA-OH Z-N-ME-L-2-AMINOHEXANOIC ACID Z-N-ME-SER(TBU)-OH DCHA N-Cbz-N-methyl-L-isoleucine Z-PYR-OH N-Cbz-Hydroxy-L-proline N-ME-AIB-OH HCL