Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Reexamination Certificate
2007-07-03
2007-07-03
Page, Thurman K. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
Reexamination Certificate
active
11136051
ABSTRACT:
An improved process is described to resolve a racemic mixture in any proportion of 5-(2-(2-(2-ethoxyphenoxy)ethylamino)propyl)-2-methoxy benzene sulfonamide as a free base or some of its salts, with BPA either S or R form to obtain enantiomerically highly pure R and S-isomer as a well characterized free base or as a salt of the title compound. Also described are novel R and S-isomers of 5-(2-(2-(2-ethoxyphenoxy) ethylamino)propyl)-2-methoxy benzene sulfonamide and their salts and the processes for their preparation.
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Padakandala Gundu Rao
Patro Allupati Padmanav
Rao Bolineni Nageswara
Rao Mutyala Krishnaji
Udayalakshmi Ambadipudi
Caesar Rivise Bernstein Cohen & Pokotilow Ltd.
Divi's Laboratories Limited
Page Thurman K.
Yevgeny Valenrod
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