Diazido-methyltetrazine tri-arm is a polyvalent ADC linker and can be used for synthesis of ADCs[1].
References
[1] Yamazaki CM, et al. Antibody-drug conjugates with dual payloads for combating breast tumor heterogeneity and drug resistance. Nat Commun. 2021 Jun 10;12(1):3528. DOI:10.1038/s41467-021-23793-7
