Piperonylic sentence example

piperonylic
  • Conversely, by heating protocatechuic acid with potash and methylene iodide, piperonylic acid was regained.
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  • These results show that piperonylic acid is the methylene ether of protocatechuic acid.
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  • Piperic acid differs from piperonylic acid by the group C4H 4, and it was apparent that these carbon atoms must be attached to the carbon atom which appears in the carboxyl group of piperonylic acid, for if they were directly attached to the benzene ring polycarboxylic acids would result in oxidation.
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