CL2A

• CAT Number: I046109
• CAS Number: 2616704-22-2
• Molecular Formula: C50H79N9O16
• Molecular Weight: 1062.21
• Purity: ≥95%
• Synonyms: N-[[1-[2-[2-[2-[2-[2-[2-[2-[2-[2-[[2-[2-[[(2S)-6-amino-1-[4-(hydroxymethyl)anilino]-1-oxohexan-2-yl]amino]-2-oxoethoxy]acetyl]amino]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethyl]triazol-4-yl]methyl]-4-[(2,5-dioxopyrrol-1-yl)methyl]cyclohexane-1-carboxamide
• InChI: InChI=1S/C50H79N9O16/c51-14-2-1-3-44(50(66)54-42-10-6-40(36-60)7-11-42)55-46(62)38-75-37-45(61)52-15-17-67-19-21-69-23-25-71-27-29-73-31-32-74-30-28-72-26-24-70-22-20-68-18-16-58-35-43(56-57-58)33-53-49(65)41-8-4-39(5-9-41)34-59-47(63)12-13-48(59)64/h6-7,10-13,35,39,41,44,60H,1-5,8-9,14-34,36-38,51H2,(H,52,61)(H,53,65)(H,54,66)(H,55,62)/t39?,41?,44-/m0/s1
• InChIKey: CJDCJOXHKQMGGB-DBSIFAAZSA-N
• SMILES: C1CC(CCC1CN2C(=O)C=CC2=O)C(=O)NCC3=CN(N=N3)CCOCCOCCOCCOCCOCCOCCOCCOCCNC(=O)COCC(=O)NC(CCCCN)C(=O)NC4=CC=C(C=C4)CO

CL2A is a claevable complicated PEG8- and triazole-containing PABC-peptide-mc linker. CL2A is cleavable through pH sensitivity, giving rise to bystander effect, and binds the antibody at a cysteine residue via a disulfide bond. Labetuzumab govitecan used this linker[1].

Reference

[1]. Samantha Congreve, et al. Antibody drug conjugates (ADC). Teknisk- naturvetenskaplig fakultet