Item # CAS # M.F M.W
HS-(CH<sub>2</sub>)<sub>6</sub>-O-PEG<sub>8</sub>-CH<sub>2</sub>CH<sub>2</sub>COOH
HS-(CH<sub>2</sub>)<sub>6</sub>-O-PEG<sub>8</sub>-CH<sub>2</sub>CH<sub>2</sub>COOH
27770608 N/A C25H50SO11 558.72
  Item # CAS # M.F M.W
HS-(CH2)6-O-PEG8-OCH3
HS-(CH2)6-O-PEG8-OCH3
27720608 N/A C23H48SO9 500.69