Table 1.
Analytical mass data of coNGR-based tracer constructs. Masses are given in Da. From top to bottom, mass of linear peptide (thioester), cyclic peptide after NCL, and the lysine wedge with four SMCC linkers are represented. Last two rows represent mass of DTPA-coNGR and DTPA-co(NGR)4, respectively.
| Compound | Monoisotopic mass | Molecular weight | Measured |
|---|---|---|---|
| CNGRG-MpaL | 705.31 | 705.81 | 705.32 |
| coNGR | 487.20 | 487.54 | 487.22 |
| Lys(Thz)-(Lys)2-(SMCC)4 | 1520.77 | 1521.84 | 1520.83 |
| DTPA-coNGR | 1170.50 | 1171.25 | 1170.49 |
| DTPA-co(NGR)4 | 4140.86 | 4143.69 | 4140.76 |