Table 8. Identified Cyclic Poly(tetramethylene ether) Glycol Adipamide, OC–(C11H22)NH–COC4H8COO(C4H8O)y.
| RT (Minute) | Measured Mass (M+H)+/(M+Na)+ | Repeating Unit (y) | Molecular Formula |
|---|---|---|---|
| 12.24 | 542.4056/564.3875 | 3 | C30H55O7N |
| 12.64 | 614.4630/636.4449 | 4 | C34H63O8N |
| 12.93 | 686.5203/708.5022 | 5 | C38H71O9N |
| 13.25 | 758.5783/780.5601 | 6 | C42H79O10N |
| 13.54 | 830.6357/852.6173 | 7 | C46H87O11N |
| 13.87 | 902.6932/924.6749 | 8 | C50H95O12N |
| 14.29 | 974.7504/996.7325 | 9 | C54H103O13N |
| 14.72 | 1046.8085/1068.7908 | 10 | C58H111O14N |
| 15.32 | 1118.8658/1140.8477 | 11 | C62H119O15N |
| 15.99 | 1190.9246/1212.9059 | 12 | C66H127O16N |
| 16.73 | 1262.9844/1284.9640 | 13 | C70H135O17N |