英文别名3-Oxo-2,6,9,12,15,18-hexaoxahenicosan-21-oic acid; 4,7,10,13,16-Pentaoxanonadecane-1,19-dioic acid, monomethyl ester; Carboxyl-PEG5-mono-methyl ester; 19-METHOXY-19-OXO-4,7,10,13,16-PENTAOXANONADECANOIC ACID; 3-[2-[2-[2-[2-(3-methoxy-3-oxopropoxy)ethoxy]ethoxy]ethoxy]ethoxy]propanoic acid; COOCH2CH2O-PEG4-CH2CH2COOH; COOH-PEG5-COOMe; 4,7,10,13,16-Pentaoxanonadecanedioic acid, 1-methyl ester; Acid-PEG5-Methyl Ester; MeOOCCH2CH2O-PEG4-CH2CH2COOH; COOH-PEG5-CH2CH2COOMe 
