PEG-47
From Wixpert
PEG-47 is a form of 
polyethylene glycol that has exactly or an average of 47 monomers in each molecule. These short length polymers are known as oligomers.
PEG-47 is a form of polyethylene glycol that has exactly or an average of 47 monomers in each molecule. These short length polymers are known as oligomers.