2-[4-(2-{[(tert-butoxy)carbonyl]amino}ethyl)piperazin-1-yl]acetic acid thalidomide [O-]C(=O)C1=CC(=CC=C1C1=C2C=C3CCC[N+]4=C3C(CCC4)=C2OC2=C3CCCN4CCCC(C=C12)=C34)C(=O)NCCCN=[N]#N Purity (HPLC): ≥ 95%

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

NCCOCCNC1=CC=C2C(=O)N(C3CCC(=O)NC3=O)C(=O)C2=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

34 SMILES OCCCCC1=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

Product Name Phthalimidinoglutarimide-C4-amine HCl Synonyms Phthalimidinoglutarimide-4'-C4-amine HCl CAS Number 2093388-69-1 Related CAS Molecular Formula C17H22ClN3O3 Molecular Weight 351

Product Name Lenalidomide-PEG2-OH Synonyms Lenalidomide-4'-PEG2-OH CAS Number n/a Related CAS Molecular Formula C17H21N3O5 Molecular Weight 347

2-[4-(2-{[(tert-butoxy)carbonyl]amino}ethyl)piperazin-1-yl]acetic acid thalidomide [O-]C(=O)C1=CC(=CC=C1C1=C2C=C3CCC[N+]4=C3C(CCC4)=C2OC2=C3CCCN4CCCC(C=C12)=C34)C(=O)NCCCN=[N]#N Purity (HPLC): ≥ 95%Nitrogen Heterocycle Based Linker (NHBL). Binfunctional amine carboxylic acid linker. Product Name 2 [4 (2 {[(tert butoxy)carbonyl]amino}ethyl)piperazin 1 yl]acetic acid Synonyms CAS Number n a Related CAS Molecular Formula C13H25N3O4 Molecular Weight 287. 36 SMILES CC(C)(C)OC(=O)NCCN1CCN(CC(O)=O)CC1 Purity (HPLC) >= 95% Shipping Conditions Room temperature Storage Conditions Refrigerated Shelf Life 12 months after the date of delivery Regulatory