Chromene derivatives useful as bronchodilators and anti-arrhythm

Details Chromene derivatives useful as bronchodilators and anti-arrhythm Chromene derivatives useful as bronchodilators and anti-arrhythm

1978-05-01

1980-01-01

Coughlan, Jr., Paul M.

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Bacterium or component thereof or substance produced by said...

2603452, 544364, 544376, 546196, 546269, 424263, 424267, 424283, A61K 31495, A61K 3135, C07D31158, C07D40506

Patent

active

041817222

ABSTRACT:
The present invention relates to compounds of the general formula: ##STR1## in which: R.sub.1 is selected from hydrogen and alkoxy having 1-7 carbon atoms,

REFERENCES:
patent: 3374245 (1968-03-01), Carney et al.
patent: 3959281 (1976-05-01), Beyerle et al.

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