Cyclo-(L-Pro-L-Phe-L-Pro-L-Phe) Formula: C28H32N4O4 CAS#: 135213-04-6 MW: 488.58 [MS]	Dots surface:
Species utilize Cyclo-(L-Pro-L-Phe-L-Pro-L-Phe) in its chemical communication system Aplousobranchia, Polycitoridae   Cystodytes dellechiajei      P ¦Category of the chemical signal A -   Attractant Al -   Allomone K -   Kairomone P -   Pheromone Sy -   Synomone¦   ¦(*) indicates that compound is active¦    Okinawan marine tunicate