Imidazo[1,2-a]pyridines of the formulae I and II: ##STR00001## are disclosed. The compounds are useful to treat anxiety and insomnia. Pharmaceutical compositions and methods are also disclosed. A representative compound of the invention is: ##STR00002##

 
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> Derivatives of 4,4'-dithiobis-(3-aminobutane-1-sulfphonates) and compositions containing same

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