Linked from
The 8 pages that link to Phenylpropanoid pathway, each with the reason it gives.
LigninNarrower topic: It supplies the precursors from which lignin monomers are made.
AnthocyaninRelated: This pathway supplies precursor molecules used to build anthocyanins.
FlavonoidRelated: It supplies the phenylpropanoid precursors used to assemble flavonoid skeletons.
QuercetinRelated: This pathway supplies the precursors used to build quercetin.