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77544-68-4

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77544-68-4 Usage

Description

Ethanol, 2-[2-(2-hydroxyethoxy)ethoxy]-, 1-(4-methylbenzenesulfonate), also known as PEG3-Tos, is a PEG linker that contains a hydroxyl group and a tosyl group. The hydrophilic PEG spacer enhances solubility in aqueous media, while the hydroxyl group allows for further derivatization or replacement with other reactive functional groups. The tosyl group serves as an excellent leaving group for nucleophilic substitution reactions.

Uses

Used in Pharmaceutical Industry:
Ethanol, 2-[2-(2-hydroxyethoxy)ethoxy]-, 1-(4-methylbenzenesulfonate) is used as a building block for the synthesis of pharmaceutical compounds. The hydrophilic PEG spacer improves the solubility and bioavailability of the final product, while the hydroxyl group allows for the attachment of various functional groups or drug molecules.
Used in Chemical Synthesis:
Ethanol, 2-[2-(2-hydroxyethoxy)ethoxy]-, 1-(4-methylbenzenesulfonate) is used as an intermediate in the synthesis of various organic compounds. The tosyl group acts as a good leaving group, facilitating nucleophilic substitution reactions, which are essential in the formation of a wide range of chemical products.
Used in Bioconjugation:
Ethanol, 2-[2-(2-hydroxyethoxy)ethoxy]-, 1-(4-methylbenzenesulfonate) is used as a linker in bioconjugation processes. The hydroxyl group can be used to attach biomolecules, such as proteins, peptides, or nucleic acids, to other molecules or surfaces, enabling the development of biosensors, drug delivery systems, and other bioanalytical tools.

Check Digit Verification of cas no

The CAS Registry Mumber 77544-68-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,5,4 and 4 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 77544-68:
(7*7)+(6*7)+(5*5)+(4*4)+(3*4)+(2*6)+(1*8)=164
164 % 10 = 4
So 77544-68-4 is a valid CAS Registry Number.

77544-68-4SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-[2-(2-Hydroxyethoxy)ethoxy]ethyl 4-methylbenzenesulfonate

1.2 Other means of identification

Product number -
Other names Ethanol,2-[2-(2-hydroxyethoxy)ethoxy]-,1-(4-methylbenzenesulfonate)

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:77544-68-4 SDS

77544-68-4Relevant articles and documents

Phthalimide–Oxy Derivatives for 3′- or 5′-Conjugation of Oligonucleotides by Oxime Ligation and Circularization of DNA by “Bis- or Tris-Click” Oxime Ligation

Meyer, Albert,Vasseur, Jean-Jacques,Dumy, Pascal,Morvan, Fran?ois

, p. 6931 - 6941 (2017)

A solid support and two phosphoramidites exhibiting a phthalimide–oxy group were synthesized. First, after treatment with hydrazine, the resulting 5′- and 3′-oxyamine oligonucleotides were conjugated with aldehyde derivatives by oxime ligation. Second, ol

In Vitro Photodynamic Studies of a BODIPY-Based Photosensitizer

Kim, Bosung,Sui, Binglin,Yue, Xiling,Tang, Simon,Tichy, Michael G.,Belfield, Kevin D.

, p. 25 - 28 (2017)

A new halogenated 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) derivative was designed as a singlet-oxygen photosensitizer (PS) for use as a photodynamic therapy (PDT) agent, and its photophysical properties were characterized. The PS, having two i

The dynamic covalent reaction based on diselenide-containing crown ether irradiated by visible light

Shang, Jie,Gong, Hanlin,Zhang, Qian,Cui, Zhiliyu,Li, Shuangran,Lv, Ping,Pan, Tiezheng,Ge, Yan,Qi, Zhenhui

, p. 2005 - 2008 (2021)

A novel diselenide-containing crown ether (BC7Se2) was fabricated, which can polymerize to form cyclic oligomers through intermolecular dynamic covalent reaction by irradiation of visible light. The size and distribution of oligomers are relate

Discovery of novel potent covalent inhibitor-based EGFR degrader with excellent in vivo efficacy

Cui, Jiaqi,Du, Yu,Huang, Lei,Niu, Jing,Shi, Shi,Xu, Yungen,Zhu, Qihua

supporting information, (2022/01/26)

Although several Epidermal growth factor receptor (EGFR) inhibitors have been approved for the treatment of non-small-cell lung cancers (NSCLC), acquired drug resistance and side effects largely encumbered their application in clinic. The emerging technology Proteolysis targeting chimera (PROTAC) could be an alternative strategy to overcome these problems. Here, we reported the discovery of Dacomitinib-based EGFR degraders. Promising compound 13 can effectively induce degradation of EGFRdel19 with DC50 value of 3.57 nM in HCC-827 cells, but not to other EGFR mutant, wild-type EGFR protein and the same family receptors (HER2 and HER4). Of note, 13 is the first EGFR-PROTAC to evaluate antitumor effect in vivo, and exhibited excellent antitumor efficacy (TGI = 90%) at a dose of 30 mg/kg without causing observable toxic effects. The preliminary mechanism study demonstrated that 13 can efficiently induce EGFR protein degradation through ubiquitin proteasome pathway and inhibit phosphorylation of downstream pathways in vitro and in vivo, which indicated that 13 exerted antitumor effect by degradation of EGFR protein in tumor tissue. Overall, our study provided further evidence to validate EGFR-PROTACs as a promising strategy for lung cancer therapy.

Selenacrown Macrocycle in Aqueous Medium: Synthesis, Redox-Responsive Self-Assembly, and Enhanced Disulfide Formation Reaction

Shang, Jie,Li, Bo,Shen, Xin,Pan, Tiezheng,Cui, Zhiliyu,Wang, Yangxin,Ge, Yan,Qi, Zhenhui

, p. 1430 - 1436 (2021/01/13)

Organic selenides are famous for their coordination and catalytic functions in the organic phase, albeit challenging for aqueous medium. Herein, the combination of a hydrophilic body of crown ether and substitution of one oxygen atom with a selenium one provides a new type of design route for organic selenide entities with charming functions in aqueous solution. The selenacrown ether C9Se presented here intrinsically shows an amphiphile-like property. Its nanosphere structure in water readily expands the catalysis of organic selenide to aqueous substrates in thiol/disulfide conversion.

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