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Home › Dicationic 4-aza-1-azoniabicyclo[2.2.2]octanes and agents for colouring keratin-containing fibers

Dicationic 4-aza-1-azoniabicyclo[2.2.2]octanes and agents for colouring keratin-containing fibers

US Patent 8551191 · Granted Oct 8, 2013

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