Methyl Isoindoline-4-carboxylate Hydrochloride is a useful synthetic intermediate in the synthesis of 2,3-Dihydro-1H-isoindole-4-carboxylic Acid (D450070); a compound that is used as a reagent in the synthesis of aminoalkylbenzoic acid derivatives for the treatment of faintness attacks, hypokinesia, cranial disorders, neurodegenerative disorders, depression, anxiety, neuropathic pain, neuropathological disorders and sleep disorders.