DBCO-Lys(m-PEG4)-Val-Cit-PAB(m-PEG8) Size:100mg 665 SMILES OC(=O)CCOCCOCCOCCOCCOCCOCCNC(=O)COC1=C2C(=O)N(C3CCC(=O)NC3=O)C(=O)C2=CC=C1 Purity (HPLC)

665 SMILES OC(=O)CCOCCOCCOCCOCCOCCOCCNC(=O)COC1=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

836 SMILES: [O-]C(=O)C1=CC(=CC=C1C1=C2C=C3CCC[N+]4=C3C(CCC4)=C2OC2=C3CCCN4CCCC(C=C12)=C34)C(=O)NCCOCCOCCOCC#C Purity (HPLC): ≥ 95% Shipping Conditions: room temperature Storage Conditions: Refrigerated 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

068 SMILES CC(C)(C)OC(=O)CN1CCN(CC(=O)NCCC(=O)N2CC3=C(C=CC=C3)C#CC3=C2C=CC=C3)CCN(CC(=O)OC(C)(C)C)CCN(CC(=O)OC(C)(C)C)CC1 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 665 SMILES OC(=O)CCOCCOCCOCCOCCOCCOCCNC(=O)COC1=C2C(=O)N(C3CCC(=O)NC3=O)C(=O)C2=CC=C1 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