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(2R,4R)-4-Hydroxypyrrolidine-2-carboxylic acid hydrochloride77449-94-633 % similar Proline147-85-333 % similar (S)-(-)-Methylsuccinic acid2174-58-533 % similar D-Proline344-25-233 % similar (+)-Methylsuccinic acid3641-51-833 % similar 2-Methylsuccinic acid498-21-533 % similar DL-Proline609-36-933 % similar 3-Isobutylglutaric acid75143-89-433 % similar Alanine302-72-732 % similar D-Alanine338-69-232 % similar 3-Methylbutanoic acid503-74-232 % similar Alanine56-41-732 % similar Hirudin (54-65) (desulfated)113274-56-932 % similar D-Leucyl-L-tyrosine3303-29-532 % similar Leucyltyrosine968-21-832 % similar Leucylglycine615-82-732 % similar L-Leucylglycine686-50-032 % similar (4R)-4-(1,1-Dimethylethoxy)-L-proline79775-07-832 % similar Acetyl tetrapeptide-11928006-88-632 % similar N-Methyl-L-glutamic acid35989-16-332 % similar