Propargyl-Acetyl-Gly-Gly-Phe-Gly-PAB(m-PEG8)-PNP Size:50mg 621 SMILES [H][C@@]1(CCC(=O)NC1=O)N1CC2=C(C=CC=C2OCC2=CC=C(CN3CCN(CC3)C3=C(F)C=C(C=C3)C#N)C=C2)C1=O Purity (HPLC)

621 SMILES [H][C@@]1(CCC(=O)NC1=O)N1CC2=C(C=CC=C2OCC2=CC=C(CN3CCN(CC3)C3=C(F)C=C(C=C3)C#N)C=C2)C1=O Purity (HPLC) >= 95% Physical Appearance White solid Solubility DMSO

309 SMILES CC(C)(C)OC(=O)CCN1CCNCC1 Purity (HPLC) >= 95% Shipping Conditions Room temperature Storage Conditions Refrigerated Shelf Life 12 months after the date of delivery Regulatory Statement For Research Use Only

3 Purity (HPLC) >= 95% Solubility DMSO

Product Name Mal-Lys(m-PEG4)-Gly-Gly-Phe-Gly-PAB(m-PEG8)-Exatecan Synonyms CAS Number Related CAS Molecular Formula C85H112FN11O27 Molecular Weight 1738

Product Name DOTA-C2-amine Synonyms CAS Number 150467-20-2 Related CAS Molecular Formula C18H34N6O7 Molecular Weight 446

Propargyl-Acetyl-Gly-Gly-Phe-Gly-PAB(m-PEG8)-PNP Size:50mg 621 SMILES [H][C@@]1(CCC(=O)NC1=O)N1CC2=C(C=CC=C2OCC2=CC=C(CN3CCN(CC3)C3=C(F)C=C(C=C3)C#N)C=C2)C1=O Purity (HPLC)SOLU KNEX cleavable linker features a Gly Gly Phe Gly (GGFG) peptide. m PEG8 is attached to the commonly used self immolative para aminobenzyl (PAB) moiety to increase aqueous solubility. The PNP (para nitrophenyl) moiety serves as an activating leaving group, enabling efficient and selective conjugation of the payload to the linker. Derived from established ADC linker architectures, SOLU KNEX ADC linkers integrate solubilizing moietiessuch as PEG,