Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of piperonal is as below...

Piperonal :: Piperonal (n.) A white crystalline substance obtained by oxidation of piperic acid, and regarded as a complex aldehyde..

Santal :: Santal (n.) A colorless crystalline substance, isomeric with piperonal, but having weak acid properties. It is extracted from sandalwood..

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