5(6)-FAM PEG3 alkyne (protected) Size:10mg 722 SMILES: [O-]C(=O)C1=CC=C(C=C1C1=C2C=C3CCC[N+]4=C3C(CCC4)=C2OC2=C3CCCN4CCCC(C=C12)=C34)C(=O)NCCCN=[N]#N

722 SMILES: [O-]C(=O)C1=CC=C(C=C1C1=C2C=C3CCC[N+]4=C3C(CCC4)=C2OC2=C3CCCN4CCCC(C=C12)=C34)C(=O)NCCCN=[N]#N

366 SMILES OCCCCCOC1=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

391 SMILES OCCOCCOCCOC1=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

and exhibits excellent photostability

5(6)-FAM PEG3 alkyne (protected) Size:10mg 722 SMILES: [O-]C(=O)C1=CC=C(C=C1C1=C2C=C3CCC[N+]4=C3C(CCC4)=C2OC2=C3CCCN4CCCC(C=C12)=C34)C(=O)NCCCN=[N]#NThe water soluble 5(6) FAM PEG3 alkyne (protected) has a long PEG3 spacer that separates the dye carboxyfluorescein (commonly known as FAM) from the terminal acetylene group. The water soluble PEG3 spacer should minimize the interaction between the dye and the biomolecule to be labeled. 5(6) FAM PEG3 alkyne (protected) is an excellent azide reactive fluorescent reagent for labeling alkyne containing biological molecules through click chemistry.