Peptide YY, porcine Description PYY is a hormone that is constructed by endocrine cells in the gut. It has been shown to be a potential regulator of appetite. Specifications Cas No. 81858-94-8 Product ID P1762 Product Name Peptide YY, porcine Synonym Peptide tyrosine tyrosine, PYY Formula Wt. 4240.7 Purity ≥98% Store Temp +4oC