Biotin-PEG2-Maleimide

Biotin-PEG2-maleimide is a thiol- and alkene-reactive biotinylation reagent. It has been used in the biotinylation of proteins and oligonucleotides. Formal Name: (3aS,4S,6aR)-N-[2-[2-[2-[[3-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)-1-oxopropyl]amino]ethoxy]ethoxy]ethyl]hexahydro-2-oxo-1H-thieno[3,4-d]imidazole-4-pentanamide. CAS Number: 305372-39-8. Synonyms: Biotin-PEG2-Mal. Molecular Formula: C23H35N5O7S. Formula Weight: 525.6. Purity: >95%. Formulation (Request formulation change): A solid. Solubility: DMSO: Soluble: > 10 mg/ml PBS (pH 7.2): Soluble: > 10 mg/ml. SMILES: [H][C@]12NC(N[C@@](CS[C@H]2CCCCC(NCCOCCOCCNC(CCN3C(C=CC3=O)=O)=O)=O)1[H])=O. InChi Code: InChI=1S/C23H35N5O7S/c29-18(4-2-1-3-17-22-16(15-36-17)26-23(33)27-22)24-8-11-34-13-14-35-12-9-25-19(30)7-10-28-20(31)5-6-21(28)32/h5-6,16-17,22H,1-4,7-15H2,(H,24,29)(H,25,30)(H2,26,27,33)/t16-,17-,22-/m0/s1. InChi Key: UDPCXVIKHFVPSZ-HOIFWPIMSA-N. Storage: -20°C. Stability: > 4 years.