DBCO-Lys(m-PEG4)-Val-Cit-PAB(m-PEG8) Size:100mg 5 SMILES [H][C@]12CS[C@@H](CCCCC(=O)NCCOCCOCCN=[N+]=[N-])[C@@]1([H])NC(=O)N2 Purity (HPLC)

5 SMILES [H][C@]12CS[C@@H](CCCCC(=O)NCCOCCOCCN=[N+]=[N-])[C@@]1([H])NC(=O)N2 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

Product Name BG-SS-SulfoCy5 Synonyms SNAP-SS-SulfoCynine 5 CAS Number Related CAS Molecular Formula C51H61N9O8S4 Molecular Weight 1056

421 SMILES OCCCCCCCC1=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

73 Purity (HPLC) >= 95% Solubility DMSO

DBCO-Lys(m-PEG4)-Val-Cit-PAB(m-PEG8) Size:100mg 5 SMILES [H][C@]12CS[C@@H](CCCCC(=O)NCCOCCOCCN=[N+]=[N-])[C@@]1([H])NC(=O)N2 Purity (HPLC)SOLU KNEX cleavable linker features a Val Cit dipeptide. In this product, a DBCO Lys(m PEG4) moiety replaces the conventional maleimidocaproyl (MC) unit to enhance aqueous solubility. DBCO is a strained alkyne commonly used in copper free click chemistry, specifically in the strain promoted azide alkyne cycloaddition (SPAAC) reaction. Additionally, m PEG8 is attached to the commonly used self immolative para aminobenzyl (PAB) moiety to further