NHS-PEG4-(m-PEG4)3-ester - CAS 1333154-70-3

NHS-PEG4-(m-PEG4)3-ester is a polyethylene glycol (PEG)-based PROTAC linker. NHS-PEG4-(m-PEG4)3-ester can be used in the synthesis of a series of PROTACs.

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Molecular Formula
C₆₀H₁₁₀N₆O₂₈
Molecular Weight
1363.54

NHS-PEG4-(m-PEG4)3-ester

    • Specification
      • 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
        (2,5-dioxopyrrolidin-1-yl) 5-[2-[2-[2-[2-[3-[[1,3-bis[3-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethylamino]-3-oxopropoxy]-2-[[3-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethylamino]-3-oxopropoxy]methyl]propan-2-yl]amino]-3-oxopropoxy]ethoxy]ethoxy]ethoxy]ethylamino]-5-oxopentanoate
    • Properties
      • InChI Key
        CPFQBAXMDMJPOZ-UHFFFAOYSA-N
        InChI
        InChI=1S/C60H110N6O28/c1-75-25-28-83-41-44-87-37-33-80-22-14-62-53(68)9-18-91-49-60(50-92-19-10-54(69)63-15-23-81-34-38-88-45-42-84-29-26-76-2,51-93-20-11-55(70)64-16-24-82-35-39-89-46-43-85-30-27-77-3)65-56(71)12-17-78-31-36-86-47-48-90-40-32-79-21-13-61-52(67)5-4-6-59(74)94-66-57(72)7-8-58(66)73/h4-51H2,1-3H3,(H,61,67)(H,62,68)(H,63,69)(H,64,70)(H,65,71)
        Canonical SMILES
        COCCOCCOCCOCCNC(=O)CCOCC(COCCC(=O)NCCOCCOCCOCCOC)(COCCC(=O)NCCOCCOCCOCCOC)NC(=O)CCOCCOCCOCCOCCNC(=O)CCCC(=O)ON1C(=O)CCC1=O
    • Reference Reading
      • 1. 4-isoxazolyl-1,4-dihydropyridines: a tale of two scaffolds
        Nicholas R Natale, Scott A Steiger Future Med Chem. 2014 May;6(8):923-43.doi: 10.4155/fmc.14.46.
        The association of the isoxazole and dihydropyridine (DHP) ring systems fused at the 4'-isoxazolyl- to the 4-position of the DHP has produced a combination scaffold, the isoxazolyl-DHPs (IDHPs) with unique conformational characteristics. The IDHPs are useful in probing biological activity, as exemplified by our efforts in the fields of voltage gated calcium channel (VGCC) antagonists and inhibitors of the multi-drug resistance (MDR) transporter. A strategically placed methyl group produced a signifcant change at the VGCC, with (R)-(+)-1-phenyl-prop-2-yl (3.7 nM) > phenethyl (22.9 nM) > (S)-(-)-1-phenyl-prop-2-yl (210 nM), a eudismic ratio of 56.7. Branching at the C-5 of the isoxazole produced a 25% increase in MDR binding, and replacing the DHP C-3 ester with a functionalized amide also gave a dramatic increase in binding affinity. Opportunities for combined scaffolds - including examples containing IDHPs - are waiting to be discovered: because new biology is driven by new chemistry.
        2. Milk lipoprotein lipases: a review
        P G Jensen, R E Pitas J Dairy Sci. 1976 Jul;59(7):1203-14.doi: 10.3168/jds.s0022-0302(76)84348-2.
        Lipoprotein lipase activity has been found in the milks from severals species where it is assumed to result from leakage from the mammary gland into milk. The function of the enzyme in the gland is apparently to assist in the transfer of blood lipoprotein triacylglycerol fatty acids into milk triacylglycerols. Bovine skim milk is one of the richest sources of lipoprotein lipase and this enzyme has been purified extensively (7000 fold) by affinity chromatography. The lipase has a molecular weight of about 62000, is inhibited by protamine sulfate, 1.0 M sodium chloride, apolipoprotein C-I (apolipoprotein-serine), and apolipoprotein C-III (apolipoprotein-alanine). The enzyme is activated by apolipoprotein C-II (apolipoprotein-glutamic acid), serum, and by heparin to which it also binds. The lipase is highly specific for the primary esters of acylglycerols and exhibits a slight stereospecificity for the sn-1 ester in preference to the sn-3-ester. Bovine milk also has separate activity toward 1-monoacylglycerols. Human milk contains a serum stimulated lipoprotein lipase with many of the characteristics of the enzyme in bovine milk, as well as an enzyme stimulated by bile salts which resembles the sterol ester hydrolase of rat pancreatic juice. The assay, function, purification, characteristics, and substrate specificities of these enzyme are discussed.
        3. Chemotherapeutic potential of phosphodiesterase inhibitors
        M J Perry, G A Higgs Curr Opin Chem Biol. 1998 Aug;2(4):472-81.doi: 10.1016/s1367-5931(98)80123-3.
        The application of molecular cloning has revealed the phenomenal diversity and complexity of the phosphodiesterase isoenzyme family. Thus, more than 30 human phosphodiesterases are now known; all are apparently necessary for the seemingly simple task of hydrolysing the 3'-ester bond of either cyclic adenosine monophosphate or cyclic guanosine monophosphate. The availability of phosphodiesterase isoenzymes as pure recombinant proteins has greatly facilitated the identification of potent, selective inhibitors. The potential of these inhibitors to therapeutically exploit the molecular diversity of the phosphodiesterases has progressed significantly. A number of drugs are in clinical trials for asthma, and Viagra has become the first selective phosphodiesterase inhibitor to be approved by the US Food and Drug Administration.
Bio Calculators
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* Our calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
It is commonly abbreviated as: C1V1 = C2V2

* Total Molecular Weight:
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Tip: Chemical formula is case sensitive. C22H30N4O c22h30n40
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