Mal-Propionyl-PEG6-Val-Cit-PAB(m-PEG4)-Exatecan Size:25mg 613 SMILES OC(=O)CCOCCOCCOCCOCCOCCOCCOC1=C2C(=O)N(C3CCC(=O)NC3=O)C(=O)C2=CC=C1 Purity (HPLC)

613 SMILES OC(=O)CCOCCOCCOCCOCCOCCOCCOC1=C2C(=O)N(C3CCC(=O)NC3=O)C(=O)C2=CC=C1 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

57 SMILES: CN(C)C1=CC=C2C(OC3=CC(C=CC3=C2C2=CC=C(C=C2C([O-])=O)C(=O)NCCCN=[N]#N)=[N+](C)C)=C1

Product Name: 5-TAMRA Lysine Synonyms: Tetramethylrhodamine-5-carboxamide lysine CAS Number: N/A Molecular Formula: C31H34N4O6 Molecular Weight: 558

81 SMILES CC1=C(SC=N1)C1=CC=C(CNC(=O)[C@@H]2C[C@@H](O)CN2C(=O)[C@@H](NC(=O)COCCOCCOCCOCC#C)C(C)(C)C)C=C1 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

A general strategy to develop cell permeable and fluorogenic probes for multicolour nanoscopy

Mal-Propionyl-PEG6-Val-Cit-PAB(m-PEG4)-Exatecan Size:25mg 613 SMILES OC(=O)CCOCCOCCOCCOCCOCCOCCOC1=C2C(=O)N(C3CCC(=O)NC3=O)C(=O)C2=CC=C1 Purity (HPLC)SOLU KNEX cleavable linker features a Val Cit dipeptide. The conventional maleimidocaproyl (MC) unit is replaced by Mal Propionyl PEG6 moiety to enhance aqueous solubility. The Mal Propionyl group may also improve retro Michael addition stability during antibody conjugation. m PEG4 is attached to the commonly used self immolative para aminobenzyl (PAB) moiety to increase aqueous solubility. The payload is Exatecan, a highly potent topoisomerase I