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Home › Certain 1-methyl-piperidine-4-spiro-4'-(1'-3'-oxazolines) and corresponding -(1',3' thiazolines)

Certain 1-methyl-piperidine-4-spiro-4'-(1'-3'-oxazolines) and corresponding -(1',3' thiazolines)

US Patent 5407938 · Granted Apr 18, 1995

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