METHYL (2S,4R)-4-FLUOROPROLINATE; (2S,4R)-4-FLUORO-2-METHOXYCARBONYL-PYRROLIDINE HCL; TRANS-4-FLUORO-PYRROLIDINE-2-CARBOXYLIC ACID METHYL ESTER; trans-4-Fluoro-L-proline methyl ester hydrochloride; (2S,4R)-methyl 4-fluoropyrrolidine-2-carboxylate hydrochloride; -Methyl 4-fluoropyrrolidine-2-carboxylate hydrochloride;