Product Name: N2-Acetyl-L-lysyl-L-alpha-aspartyl-L-valyl-L-tyrosine INCI Name: ACETYL TETRAPEPTIDE-2 Molecular Formula: C26H39N5O9 Molecular Weight: 565.62 Appearance: White powder Purity: 99% CAS Number: 757942-88-4 Standard: Enterprise Standard Supplier: ZhenYiBio Acetyl tetrapeptide-2 is a mimic of the cell maturation factor produced by the thymus. Oxytocin acts locally on keratinocytes, inducing the intracellular synthesis of paracrine and autocrine mediators. Oxytocin then stimulates keratinocytes to produce GM-CSF (granulocyte macrophage colony stimulating factor).