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US 4,393,061 AGranted
Anesthetic-antipruritic morpholine compounds, compositions and use
AssigneeStiefel Laboratories, Inc.
InventorCheng-Sein Yu
Life of this patent
Estimating the term…
Abstract
N-[3-(4-{3-Fluorobenzyloxy}phenoxy)propyl]morpholine and its pharmaceutically acceptable salts possess topical anesthetic-antipruritic properties. The free base can be obtained by coupling an alkali metal salt of 4-(3-fluorobenzyloxy)phenol and N-(3-chloropropyl)morpholine.
Claims6
A compound selected from the group consisting of the free base of the formula:
- ##STR2## and the pharmaceutically acceptable acid addition salts thereof.
Dependencies are inferred from the claim text.