Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Reexamination Certificate
2005-06-21
2005-06-21
Davis, Brian (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
C564S339000, C548S211000
Reexamination Certificate
active
06909017
ABSTRACT:
The invention relates to a method for isolating and purifying (1RS,2RS)-2-[(dimethylamino)methyl]-1-(3-methoxyphenyl)-cyclohexanol as a saccharinate from a mixture of the diastereomers (1SR,2)RS-2-[(dimethylamino)methyl]-1-(3-methoxyphenyl)-cyclohexanol and (1SR-2RS)-2-[(dimethylamino)methyl]-1-(3-methoxyphenyl)-cyclohexanol and optionally impurities.
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patent: WO 99/61405 (1999-12-01), None
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“Solvatochromic Dyes As Solvent Polarity Indicators”, Reichardt, Chem. Rev. 1994, 94, pp. 2319-2358.
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R. Eberhardt et al., “Determination of ET(30) Values of Supercritical Carbon Dioxide at Various Pressures and Temperatures” 1997, Germany, pp. 1195-1199.
Davis Brian
Grunenthal GmbH
Perman & Green, LLP.
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