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METHOXYPOLYETHYLENE GLYCOL 5,000 PROPIONIC ACID, also known as m-PEG24-acid, is a PEG (polyethylene glycol) linker with a terminal carboxylic acid group. This terminal carboxylic acid can react with primary amine groups in the presence of activators, such as EDC or HATU, to form a stable amide bond. The hydrophilic PEG spacer enhances solubility in aqueous media, making it a versatile molecule for various applications.

125220-94-2

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125220-94-2 Usage

Uses

Used in Pharmaceutical Industry:
METHOXYPOLYETHYLENE GLYCOL 5,000 PROPIONIC ACID is used as a molecular linker for the conjugation of therapeutic agents, such as drugs or proteins, to improve their solubility, stability, and bioavailability in aqueous environments. The formation of stable amide bonds with primary amine groups allows for the creation of drug conjugates with enhanced pharmacokinetic properties and reduced immunogenicity.
Used in Drug Delivery Systems:
In the field of drug delivery, METHOXYPOLYETHYLENE GLYCOL 5,000 PROPIONIC ACID serves as a key component in the design of targeted drug delivery systems. The hydrophilic PEG spacer can be utilized to enhance the solubility and circulation time of drug-loaded nanoparticles or liposomes, while the reactive carboxylic acid group allows for the attachment of targeting ligands or drugs to the delivery system. This enables the development of more effective and selective therapies with reduced side effects.
Used in Bioconjugation:
METHOXYPOLYETHYLENE GLYCOL 5,000 PROPIONIC ACID is used as a bioconjugation agent for the attachment of various biomolecules, such as antibodies, peptides, or enzymes, to other molecules or surfaces. The stable amide bond formation with primary amine groups enables the creation of bioconjugates with well-defined structures and improved performance in biological applications, such as immunoassays, sensors, or drug discovery.
Used in Material Science:
In the field of material science, METHOXYPOLYETHYLENE GLYCOL 5,000 PROPIONIC ACID can be employed as a functional component in the development of hydrogels, coatings, or other materials with tailored properties. The hydrophilic PEG spacer and reactive carboxylic acid group can be used to modify the surface properties of materials, enhance their biocompatibility, or introduce specific functionalities, such as drug release or cell adhesion.

Check Digit Verification of cas no

The CAS Registry Mumber 125220-94-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,5,2,2 and 0 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 125220-94:
(8*1)+(7*2)+(6*5)+(5*2)+(4*2)+(3*0)+(2*9)+(1*4)=92
92 % 10 = 2
So 125220-94-2 is a valid CAS Registry Number.

125220-94-2Relevant articles and documents

Deep cavitand vesicles - Multicompartmental hosts

Kubitschke, Jens,Javor, Sacha,Rebek, Julius

, p. 9251 - 9253 (2012)

The synthesis and characterization of vesicles assembled from deep cavitands in water is reported. These vesicles act as hosts for three different types of guests: the cavitands bind small guest molecules, the bilayer attracts larger hydrophobic guests an

Live-Cell Protein Modification by Boronate-Assisted Hydroxamic Acid Catalysis

Adamson, Christopher,Kajino, Hidetoshi,Kanai, Motomu,Kawashima, Shigehiro A.,Yamatsugu, Kenzo

, p. 14976 - 14980 (2021/09/29)

Selective methods for introducing protein post-translational modifications (PTMs) within living cells have proven valuable for interrogating their biological function. In contrast to enzymatic methods, abiotic catalysis should offer access to diverse and new-to-nature PTMs. Herein, we report the boronate-assisted hydroxamic acid (BAHA) catalyst system, which comprises a protein ligand, a hydroxamic acid Lewis base, and a diol moiety. In concert with a boronic acid-bearing acyl donor, our catalyst leverages a local molarity effect to promote acyl transfer to a target lysine residue. Our catalyst system employs micromolar reagent concentrations and affords minimal off-target protein reactivity. Critically, BAHA is resistant to glutathione, a metabolite which has hampered many efforts toward abiotic chemistry within living cells. To showcase this methodology, we installed a variety of acyl groups inE. colidihydrofolate reductase expressed within human cells. Our results further establish the well-known boronic acid-diol complexation as abona fidebio-orthogonal reaction with applications in chemical biology and in-cell catalysis.

Pyrimido-pyridone compound and application thereof

-

Paragraph 0326; 0328; 0330, (2021/05/08)

The invention provides a pyrimido-pyridone compound with a structure as shown in a formula I, pharmaceutically acceptable salts, stereoisomers, tautomers, N-oxides or prodrug molecules of the pyrimido-pyridone compound and applications thereof. The compound can be used as a protein kinase inhibitor, can effectively inhibit the activity of TTK protein kinase and can inhibit proliferation, migration and invasion of various tumor cells.

PEPTIDIC LINKERS AND CRYPTOPHYCIN CONJUGATES, USEFUL IN THERAPY, AND THEIR PREPARATION

-

, (2018/12/02)

The present disclosure relates to compounds of formula (I): RCG1-L-P (I) wherein RCG1 represents a reactive chemical group being reactive towards a chemical group present on a polypeptide such as an antibody; P represents H, OH or an activated O; and L represents a specific linker. The disclosure also relates to cryptophycin payloads, as well as to cryptophycin conjugates, to compositions containing them and to their therapeutic use, especially as anticancer agents. The disclosure also relates to the process for preparing these conjugates.

Polyethylene glycol monomethyl ether statin compound and preparation method thereof

-

Paragraph 0018, (2018/04/21)

The invention relates to a polyethylene glycol monomethyl ether statin compound and a preparation method thereof. The method mainly comprises the following steps: 1) activating an end group of polyethylene glycol monomethyl ether; and 2) connecting the activated polyethylene glycol monomethyl ether statin compound by amino acid or oligopeptide to obtain the polyethylene glycol monomethyl ether statin compound. The polyethylene glycol monomethyl ether statin compound has a structure: mPEG-(A)i-(statins)j, wherein mPEG is polyethylene glycol monomethyl ether and has a structure as shown in the specification, n is an integer ranging from 1 to 24, A is amino acid or oligopeptide, i is an integer ranging from 1 to 6, statins are statin compounds, and j is an integer ranging from 1 to 6. The load rate of a drug is increased by the statin compounds modified by polyethylene glycol. Due to the modification of polyethylene glycol, the absorption of the drum is improved, the acting time is prolonged, the curative effect is enhanced, and toxic or side effects are avoided.

Dissociative reactions of benzonorbornadienes with tetrazines: Scope of leaving groups and mechanistic insights

Xu,Galindo-Murillo,Cheatham,Franzini

supporting information, p. 9855 - 9865 (2017/12/12)

Bioorthogonal dissociative reactions boast diverse potential applications in chemical biology and drug delivery. The reaction of benzonorbornadienes with tetrazines to release amines from carbamate leaving groups was recently introduced as a bioorthogonal bond-cleavage reaction. The present study aimed at investigating the scope of leaving groups that are compatible with benzonorbornadienes. Synthesis of several benzonorbornadienes with different releasable groups is reported, and the reaction of these molecules with tetrazine was found to be rapid and afforded high release yields. The tetrazine-induced release of molecules proceeds in a cascade of steps including inverse-electron demand cycloaddition and cycloreversion reactions that form unstable isoindoles/isobenzofuran intermediates and spontaneously eliminate a leaving group of interest. In the case of oxygen-bridged BNBDs at room temperature, we observed the formation of an unproductive byproduct.

2-AMINO-1,3,4-THIADIAZINE AND 2-AMINO-1,3,4-OXADIAZINE BASED ANTIFUNGAL AGENTS

-

Page/Page column 67, (2017/02/09)

The invention provides a compound which is a diazine of formula (I) or a tautomer thereof, or a pharmaceutically acceptable salt thereof, for use as an antifungal agent: (I) wherein X, N', C', A and E are as defined herein. The invention also provides a compound of Formula (I) as defined herein.

ONIUM SALT, LIQUID COMPOSITION CONTAINING SAID ONIUM SALT AND CELLULOSE, AND CELLULOSE RECOVERY METHOD

-

Paragraph 0128; 0129; 0130, (2016/02/19)

The invention relates to an onium salt, a liquid composition containing the onium salt and cellulose, and a method for recovering cellulose. The invention makes it possible to provide an onium salt having an extremely high ability to dissolve cellulose at temperatures of 100° C. or lower. It also makes it possible to provide a liquid composition containing this onium salt and cellulose, as a composition suitable for the recovery of cellulose, and a method for recovering cellulose efficiently by using such a liquid composition containing the onium salt and cellulose.

Tumour-specific cytotoxicity and structure-activity relationships of novel 1-[3-(2-methoxyethylthio)propionyl]-3,5-bis(benzylidene)-4-piperidones

Hossain, Mohammad,Das, Umashankar,Umemura, Naoki,Sakagami, Hiroshi,Balzarini, Jan,De Clercq, Erik,Kawase, Masami,Dimmock, Jonathan R.

, p. 2206 - 2214 (2016/04/26)

A series of 1-acyl-3,5-bis(benzylidene)-4-piperidones 3-7 were designed and synthesized as novel cytotoxic agents. These compounds displayed potent cytotoxic properties towards human Molt4/C8, CEM, HSC-2, HSC-3 and HSC-4 neoplasms and also to murine L1210

Oligo(p-phenylene-ethynylene)s with backbone conformation controlled by competitive intramolecular hydrogen bonds

Hu, Wei,Yan, Qifan,Zhao, Dahui

supporting information; experimental part, p. 7087 - 7094 (2011/07/09)

A series of conjugated oligo(p-phenylene-ethynylene) (OPE) molecules with backbone conformations (that is, the relative orientations of the contained phenylene units) controlled by competitive intramolecular hydrogen bonds to be either co-planar or random

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