Prostaglandin F2-alpha(PGF-2 alpha) is a stable prostaglandin that stimulates the contraction of uterine and bronchial smooth muscle and produces vasoconstriction (tightening) in some blood vessels. As a pharmaceutical, the generic name of PGF-2 alpha is dinoprost.
  The most common compound on Earth is water. It's formula is H2O, meaning that in one water molecule, there are two hydrogen (H) atoms and one oxygen (O) atom.  Anoth â¦ er common compound is sodium chloride, which most people know as table salt.ydrogen is the most common atom in the universe, and oxygen is the thrid â¦ most common, so water has to be the number one compound.
This table shows the chemical composition or abundance of chemical compounds in the Earth's crust. As you can see, the most common compound in the Earth's crust is silica. Quartz consists of silica and it is the primary constituent of most sand.Reference: Brown, Geoff C.; Mussett, Alan E. (1981). The Inaccessible Earth (2nd ed.).Taylor & Francis.p. 166.his table shows the chemical composition or abundance of chemical compounds in the Earth's crust. As you can see, the most common compound in the Earth's crust is silica. Quartz consists of silica and it is the primary constituent of most sand.