BC-CPY Halotag 626 SMILES: CN(C)C1=CC=C2C(OC3=CC(C=CC3=C2C2=CC(=CC=C2C([O-])=O)C(=O)NCCCCCN)=[N+](C)C)=C1 Purity (HPLC):

626 SMILES: CN(C)C1=CC=C2C(OC3=CC(C=CC3=C2C2=CC(=CC=C2C([O-])=O)C(=O)NCCCCCN)=[N+](C)C)=C1 Purity (HPLC): ≥ 95% Shipping Conditions: room temperature Storage Conditions: Refrigerated Regulatory Statement: For Research Use Only

Unlike the classic copper-catalyzed azide-alkyne cycloaddition (CuAAC)

587 SMILES: CN(C)C1=CC=C2C(OC3=CC(C=CC3=C2C2=CC(=CC=C2C([O-])=O)C(=O)NCCN2C(=O)C=CC2=O)=[N+](C)C)=C1 Purity (HPLC): ≥ 95% Shipping Conditions: room temperature Storage Conditions: Refrigerated Regulatory Statement: For Research Use Only

88 SMILES CC(C)(C)OC(=O)CN1CCN(CC(=O)NCCOCCN=[N+]=[N-])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

526 SMILES O=C1N(CC2=C(NCCOCCOCCOCCOCC#C)C=CC=C12)C1CCC(=O)NC1=O 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

BC-CPY Halotag 626 SMILES: CN(C)C1=CC=C2C(OC3=CC(C=CC3=C2C2=CC(=CC=C2C([O-])=O)C(=O)NCCCCCN)=[N+](C)C)=C1 Purity (HPLC):CLIP tag is a modified version of the SNAP tag. It is also a self labeling protein derived from human O6 alkylguanine DNA alkyltransferase. Unlike the SNAP tag, which reacts with benzylguanine (BG)or chloropyrimidine (CP) derivatives, the CLIP tag is engineered to specifically interact with benzylcytosine (BC)derivatives. This modification allows for distinct labeling applications, enabling researchers to use both SNAP tag and CLIP tag in the same