for the following products
(Fmoc-Amino)-peg12-c2-carboxylic acid | 1-(9-Fluorenylmethyloxycarbonyl)amino-3,6,9,12,15,18,21,24,27,30,33,36-dodecaoxanonatriacontan-39-oic acid | Fmoc-N-Amido-peg12-propionic acid | Fmoc-Nh-peg(12)-cooh and Fmocnh-peg12-ch2ch2cooh
