11-Deoxy-16-phenoxy-17,18,19,20-tetranor-PGE1 11-Deoxy-16-phenoxy-17,18,19,20-tetranorprostaglandin E1 80558-61-8 Cyclopentaneheptanoic acid, 2-(3-hydroxy-4-phenoxy-1-butenyl)-5-oxo-, (1R-(1alpha,2beta(1E,3R*)))- Dpt-prostaglandin E1 M&B 28,767 M&B-28767 M&B28767 MB-28767