para-Quaterphenyl, or p-quaterphenyl, is a chemical compound consisting of a straight chain of four phenyl groups connected in the para position.

It can be considered as next in the series of benzene, biphenyl, para-terphenyl.

It is an aromatic hydrocarbon and a chromophore.

One possible use is in scintillation counters where it is dissolved in toluene and glows when subject to beta rays.

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