α- and β-amino acid hydroxyethylamino sulfamic...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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C546S169000

Reexamination Certificate

active

11167164

ABSTRACT:
Certain Alpha- and Beta-amino acid hydroxyethylamino sulfamic acid derivatives represented by the following formula are useful as retroviral protease inhibitors:

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