|Abstract:||1. A compound selected from the group consisting of: ##SPC1## And acid addition salts thereof wherein R is selected from the group consisting of hydrogen, alkyl having up to 6 carbon atoms, benzyl, or cycloalkyl having up to 8 carbon atoms; Y is selected from the group consisting of hydrogen, chloro, or bromo; and X and X' are selected from the group consisting of hydrogen, chloro, or bromo. 2. A compound selected from the group consisting of: ##SPC2## And acid addition salts thereof wherein R is selected from the group consisting of hydrogen and alkyl having up to 6 carbon atoms.|
|Inventor(s):||Engelhardt; Edward L. (Gwynedd Valley, PA)|
|Assignee:||Merck & Co., Inc. (Rahway, NJ)|
Patent Claim Types:|
see list of patent claims
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
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