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Organic Compounds -- Part Of The Class 532-570 Series > Azo Compounds Containing Formaldehyde Reaction Product As The Coupling Component > Carbohydrates Or Derivatives > Oxygen Containing Hetero Ring (e.g., Dioxirane, Etc.) > Xanthene Ring System Having A Benzene Ring Bonded Directly Thereto Para To The Xanthene Ring Oxygen, Wherein The Carbon Of A -coo- Group Is Bonded Directly To The Benzene Ring Ortho To Its Position Of Attachment To The Xanthene Ring System, And Spirolactone Derivatives Thereof (e.g., Fluoresceins, Chlorofluorans, Etc.) > Nitrogen Bonded Directly To The Xanthene Ring System (e.g., Rhodols, Aminofluorans, Etc.) Nitrogen Bonded Directly To The Xanthene Ring System (e.g., Rhodols, Aminofluorans, Etc.)Nitrogen Bonded Directly To The Xanthene Ring System (e.g., Rhodols, Aminofluorans, Etc.) patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.05/18/06 - 20060106234 - High purity phthalein derivatives and method for preparing same The invention concerns high purity phthalcin derivatives enabling their use for medical applications or in the field of biotechnology, as well as their preparation method whereby a phthatic anhydride derivative is condensed with a naphthol or phenol derivative in an organic acid ester and the crystals of the resulting condensate ... ### FreshPatents.com Support |