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(S)-N,N-dimethyl-1-(pyrrolidin-3-yl)methanamine dihydrochloride; CAS No.: 859027-26-2; (S)-N,N-dimethyl-1-(pyrrolidin-3-yl)methanamine dihydrochloride. PROPERTIES: (S)-N,N-dimethyl-1-(pyrrolidin-3-yl)methanamine dihydrochloride has molecular formula C8H18Cl2N2 {2HCl, giving it a molecular weight of 273.60 g/mol. It appears as a white crystalline powder with a melting point between 205-208 C. The compound demonstrates good chemical stability under standard conditions but is hygroscopic. Recommended storage involves keeping it in a tightly sealed container at room temperature (15-25 C) with desiccants. Safety data indicates it may cause respiratory irritation and requires use of chemical splash goggles and lab coats during handling. The compound has a logP value of approximately 1.2 and exhibits high aqueous solubility. APPLICATIONS: This (S)-N,N-dimethyl-1-(pyrrolidin-3-yl)methanamine dihydrochloride is extensively used in the synthesis of antipsychotic medications. Its pyrrolidine-methanamine structure provides a platform for developing dopamine D2 receptor antagonists with improved receptor selectivity. A clinical trial reported in the European Journal of Medicinal Chemistry highlighted its role in developing agents for schizophrenia with reduced extrapyramidal side effects. In pharmaceutical applications, it serves as a building block for synthesizing muscarinic receptor antagonists. The dimethyl substituents provide steric effects beneficial for optimizing receptor binding. Research in Neuropharmacology demonstrated its utility in developing antipsychotic agents with improved safety profiles. Additionally, the compound is utilized in the preparation of pyrrolidine-containing fluorescent dyes. The amine group provides a site for installing fluorescence tags, enabling detection of enzymatic activity in biological systems, as reported in Chemical Communications.