Hydrochloric Acid → 5-{2-[2-(3-Chloro-phenyl)-2-hydroxy-ethylamino]-propyl}-benzo[1,3]dioxole-2,2-dicarboxylic acid bis-(2-ethoxy-ethyl) ester hydrochloride salt

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The title compound was prepared from 5-{2-[2-(3-chloro-phenyl)-2-hydroxy-ethylamino]-propyl}-benzo[1,3]dioxole-2,2-dicarboxylic acid and 2-ethoxyethanol according to the procedure of Example 1 as an oily off-white gummy solid; 1H NMR (300 MHz, CDCl3): δ 1.10-1.20 (t overlaps with d, J=6.9 Hz, 9H), 1.31-1.41 (brm, 2H), 2.75-2.90 (brm, 1H), 3.10-3.30 (brm, 2H), 3.50 (brq, J=6.9 Hz, 4H), 3.62-3.71 (brm, 4H), 4.37-4.47 (brm, 4H), 5.30-5.70 (brm, 2H), 6.70-6.90 (brm, 4H), 7.19-7.50 (brm, 3H), 8.50-8.85 (brs, 1H), 9.90-10.30 (brs, 1H); MS (ES) m/z (relative intensity): 566 (M+ -HCl, (60).

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