英文别名3,6,9,12,15-pentoxahexadecanoic acid; 2,5,8,11,14-Pentaoxahexadecan-16-oic acid; MPEG4-acetic acid; (2-{2-[2-(2-methoxyethoxy)ethoxy]ethoxy}ethoxy)acetic acid; 3,6,9,12,15-Pentaoxahexadecansaeure; 3,6,9,12,15-Pentaoxahexadecanoicacid; m-PEG4-CH2COOH; m-PEG5-CH3COOH; Methyl-PEG4-CH2COOH 
