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. 2021 Jan 15;60(6):3008–3015. doi: 10.1002/anie.202011593

Scheme 4.

Scheme 4

The initial Lx conjugation approach to ADCs with its two crucial steps: complexation and conjugation (left) and the advanced Lx technology, with both key steps greatly improved by use of iodide as a ligand and as a salt additive (right).