ES375703A2 - A method of preparation of chromogenic fatalids, fundamentally colorless or colored. (Machine-translation by Google Translate, not legally binding)
- Google Patents
A method of preparation of chromogenic fatalids, fundamentally colorless or colored. (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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NCR Voyix Corp
National Cash Register Co
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NCR Corp
National Cash Register Co
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Publication of ES375703A2publicationCriticalpatent/ES375703A2/en
"IMPROVEMENTS INTRODUCED IN THE OBJECT OF THE MAIN PATENT 349,816, granted, by" A METHOD OF PREPARATION OF CHROMOGENIC FATALIDS; FUNDAMENTALLY COLORLESS OR COLORED ", characterized by the general formula of these compounds is: ** (See formula) ** wherein R represents either a 1,2-dimethylindole-3-yl group or a p-dialkylaminophenyl group R, represents an aromatic or heterocyclic-aromatic group, substituted or unsubstituted; and R2 represents hydrogen or an alkyl group having less than 5 carbon atoms. (Machine-translation by Google Translate, not legally binding)
ES375703A1969-01-211970-01-20A method of preparation of chromogenic fatalids, fundamentally colorless or colored. (Machine-translation by Google Translate, not legally binding)
ExpiredES375703A2
(en)