(S,R,S)-AHPC-CO-PEG2-C2-azide deuterium-labeled-amine OC(=O)C1=CC=C2C(=O)OC3(C2=C1)C1=CC(Cl)=C(O)C=C1OC1=C3C=C(Cl)C(O)=C1 Purity (HPLC): ≥ 95%

OC(=O)C1=CC=C2C(=O)OC3(C2=C1)C1=CC(Cl)=C(O)C=C1OC1=C3C=C(Cl)C(O)=C1 Purity (HPLC): ≥ 95% Shipping Conditions: room temperature Storage Conditions: Refrigerated Regulatory Statement: For Research Use Only

97 SMILES ClCCOCCOCCOCCOCCC(=O)NC1=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

677 SMILES: [O-]C(=O)C1=CC=C(C=C1C1=C2C=C3CCC[N+]4=C3C(CCC4)=C2OC2=C3CCCN4CCCC(C=C12)=C34)C(=O)NCC#C Purity (HPLC): ≥ 95% Shipping Conditions: room temperature Storage Conditions: Refrigerated Regulatory Statement: For Research Use Only

Product Name: 5(6)-FAM PEG3 alkyne (protected) Synonyms: 5-(and 6)-carboxyfluorescein PEG3 alkyne protected CAS Number: N/A Molecular Formula: C40H43NO11 Molecular Weight: 713

546 SMILES O=C1N(C2CCC(=O)NC2=O)C(=O)C2=CC(OCCOCCOCCOCCOCCOCC#C)=CC=C12 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

(S,R,S)-AHPC-CO-PEG2-C2-azide deuterium-labeled-amine OC(=O)C1=CC=C2C(=O)OC3(C2=C1)C1=CC(Cl)=C(O)C=C1OC1=C3C=C(Cl)C(O)=C1 Purity (HPLC): ≥ 95%Degrader building block for targeted protein degradation. Contains an E3 ligase ligand with a linker and a function group, which can be conjugated to target protein ligands through straightforward chemical reactions. Product Name (S,R,S) AHPC CO PEG2 C2 azide Synonyms CAS Number n a Related CAS Molecular Formula C29H41N7O6S Molecular Weight 615. 75 SMILES CC1=C(SC=N1)C1=CC=C(CNC(=O)[C@@H]2C[C@@H](O)CN2C(=O)[C@@H](NC(=O)CCOCCOCCN=[N+]=[N