1,4-Dithia-7-azaspiro[4.4]nonane-8-carboxylic acid, hydrobromide (1:1), (8S)-75776-79-3100 % similar 3-Thiomorpholinecarboxylic acid20960-92-341 % similar L-Thioproline34592-47-739 % similar 4-Thiazolidinecarboxylic acid444-27-939 % similar Azetidine-2-carboxylic acid2133-34-839 % similar (±)-2-Azetidinecarboxylic acid2517-04-639 % similar Proline147-85-337 % similar D-Proline344-25-237 % similar Dl-proline609-36-937 % similar (S)-Piperazine-2-carboxylic acid147650-70-236 % similar (+)-Pipecolic acid1723-00-836 % similar cis-4-Hydroxy-D-proline2584-71-636 % similar Pipecolic acid3105-95-136 % similar Pipecolic acid4043-87-236 % similar Hydroxyproline51-35-436 % similar Pipecolic acid535-75-136 % similar cis-4-Hydroxy-L-proline618-27-936 % similar Edds20846-91-735 % similar (S)-Morpholine-3-carboxylic acid106825-79-034 % similar (2R,4S)-4-Fluoropyrrolidine-2-carboxylic acid131176-02-834 % similar