(4-Oxo-4H-1-benzopyran-2-yl)-oxamic acid, salts and esters anti-

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal

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2603455, 424283, C07D31102

Patent

active

039377199

ABSTRACT:
Anti-allergic agents present the following structural formula: ##SPC1##
In which

REFERENCES:
patent: 3322795 (1961-05-01), Ellis et al.
patent: 3652765 (1972-03-01), Ellis et al.
patent: 3836541 (1974-09-01), Johnson et al.
patent: 3862143 (1975-01-01), Klectchko et al

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