N-(Azido-PEG3)-NH-PEG3-acid - CAS 2183440-72-2

N-(Azido-PEG3)-NH-PEG3-acid is a polyethylene glycol (PEG)-based PROTAC linker. N-(Azido-PEG3)-NH-PEG3-acid can be used in the synthesis of a series of PROTACs.

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Molecular Formula
C₁₇H₃₄N₄O₈
Molecular Weight
422.47

N-(Azido-PEG3)-NH-PEG3-acid

    • Specification
      • Purity
        98%
        Solubility
        Water, DMSO, DMF
        Storage
        Please store the product under the recommended conditions in the Certificate of Analysis.
        Shipping
        Room temperature in continental US; may vary elsewhere.
        IUPAC Name
        3-[2-[2-[2-[2-[2-[2-(2-azidoethoxy)ethoxy]ethoxy]ethylamino]ethoxy]ethoxy]ethoxy]propanoic acid
        Synonyms
        N-(Azido-PEG3)-NH-PEG3-acid HCl salt
    • Properties
      • InChI Key
        CDPBBXHRNSHWQA-UHFFFAOYSA-N
        InChI
        InChI=1S/C17H34N4O8/c18-21-20-4-8-27-12-16-29-15-11-26-7-3-19-2-6-25-10-14-28-13-9-24-5-1-17(22)23/h19H,1-16H2,(H,22,23)
        Canonical SMILES
        C(COCCOCCOCCNCCOCCOCCOCCN=[N+]=[N-])C(=O)O
    • Reference Reading
      • 1. NH4+-N/NO3--N ratio controlling nitrogen transformation accompanied with NO2--N accumulation in the oxic-anoxic transition zone
        Xiaoyan Liu, Yaoguo Wu, Ran Sun, Sihai Hu, Zixia Qiao, Sichang Wang, Xiaohui Mi Environ Res. 2020 Oct;189:109962.doi: 10.1016/j.envres.2020.109962.Epub 2020 Jul 23.
        Although nitrogen (N) transformations have been widely studied under oxic or anoxic condition, few studies have been carried out to analyze the transformation accompanied with NO2--N accumulation. Particularly, the control of mixed N species in N-transformation remains unclear in an oxic-anoxic transition zone (OATZ), a unique and ubiquitous redox environment. To bridge the gap, in this study, OATZ microcosms were simulated by surface water and sediments of a shallow lake. The N-transformation processes and rates at different NH4+-N/NO3--N ratios, and NO2--N accumulations in these processes were evaluated. N-transformation process exhibited a turning point. Simultaneous nitrification and denitrification occurred in its early stage (first 10 days, dissolved oxygen (DO) ≥ 2 mg/L) and then denitrification dominated (after 10 days, DO < 2 mg/L), which were not greatly affected by the NH4+-N/NO3--N ratio, on the contrary, the transformation rates of NH4+-N and NO3--N were distinctly affected. The NH4+-N transformation rates were positively correlated with the NH4+-N/NO3--N ratio. The highest NO3--N transformation rate was observed at an NH4+-N/NO3--N ratio of 1:1 with organic carbon/NO3--N of 3.09. The NO2--N accumulation, which increased with the decrease in NH4+-N/NO3--N ratio, was also controlled by organic carbon concentration and type. The peak concentration of NO2--N accumulation occurred only when the NO3--N transformation rate was particularly low. Thus, NO2--N accumulation may be reduced by adjusting the control parameters related to N and organic carbon sources, which enhances the theoretical insights for N-polluted aquatic ecosystem bioremediation.
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