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57602-02-5

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57602-02-5 Usage

Description

Bromo-PEG4-bromide is a PEG linker containing two bromide groups. The bromide (Br) is a very good leaving group for nucleophilic substitution reactions. The hydrophilic PEG spacer increases solubility in aqueous media.

Chemical Properties

Clear Light Yellow Liquid

Uses

A cross-linking reagent.

Check Digit Verification of cas no

The CAS Registry Mumber 57602-02-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,6,0 and 2 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 57602-02:
(7*5)+(6*7)+(5*6)+(4*0)+(3*2)+(2*0)+(1*2)=115
115 % 10 = 5
So 57602-02-5 is a valid CAS Registry Number.
InChI:InChI=1/C10H20Br2O4/c11-1-3-13-5-7-15-9-10-16-8-6-14-4-2-12/h1-10H2

57602-02-5SDS

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 1,14-Dibromo-3,6,9,12-tetraoxatetradecane

1.2 Other means of identification

Product number -
Other names 1,2-bis[2-(2-bromoethoxy)ethoxy]ethane

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:57602-02-5 SDS

57602-02-5Relevant articles and documents

Intraannular functionalization of the 1,3-phenylene-19-crown-6 system via bromine-lithium exchange

Kostas, Ioannis D.,Akkerman, Otto S.,Bickelhaupt, Friedrich,Veldman, Nora,Spek, Anthony L.

, p. 93 - 104 (1999)

In contrast to the behavior of its lower homologue 1,3-phenylene-16-crown-5 (1), the direct lithiation of 1,3-phenylene-19-crown-6 (2) with n-BuLi at the intruannular position-2 was found to be slow and not quantitative. Therefore, (2-bromo-1,3-phenylene)-19-crown-6 (8) was synthesized by the reaction of the dicesium salt of 2-bromo-resorcinol (7) with pentaethylene glycol dibromide. The crystal structure of 8 revealed the existence of three chemically identical residues in the unit cell; in all cases, the bromine atom sticks out of the crown ether ring. The bromine-lithium exchange reaction of 8 with n-BuLi to furnish the desired (2-lithio-1,3-phenylene)-19-crown-6 (4) was quantitative after 2 h at -65°C in THF. Derivatization of 4 with deuterium oxide, dimethyl disulfide, iodine, carbon dioxide, mercuric bromide (1 or 0.5 molar equivalents), and magnesium bromide yielded (2-deuterio-1,3-phenylene)-19-crown-6 (2a), (2methylthio-1,3-phenylene)-19-crown-6 (10), (2-iodo-1,3-phenylene)-19-crown-6 (11), (2-carboxy-1,3-phenylene)-19-crown-6 (12), (2-bromomercurio-1,3-phenylene)-19-crown-6 (13), bis[(1,3-phenylene-19-crown-6)-2-yl]mercury (14), and (2-bromomagnesio-1,3-phenylene)-19-crown-6 (15), respectively. The synthesis of the Grignard reagent 15 was also carried out by the direct reaction of 8 with magnesium; contrary to the corresponding 1,3-xylylene crown ethers, cleavage of the crown ether ring during the formation of 15 was not observed. At room temperature, the solution of crude 4 (prepared from 8) gave rise to ether cleavage and to the formation of (2-n-butyl-1,3-phenylene)-19-crown 6 (16).

Crown-ether-modified cyclic dipeptides as supramolecular chiral catalysts

Bérubé, Christopher,Voyer, Normand

, p. 184 - 195 (2017/10/26)

With the objective to develop supramolecular catalysts for useful chemical transformations, we report here a rapid and efficient solid-phase synthesis of novel cyclic dipeptides (crown-CDPs) with a diversity of L-DOPA derived crown ether substituents and

Bifunctional thiosialosides inhibit influenza virus

Yang, Yang,He, Yun,Li, Xingzhe,Dinh, Hieu,Iyer, Suri S.

supporting information, p. 636 - 643 (2014/01/23)

We have synthesized a panel of bivalent S-sialoside analogues, with modifications at the 4 position, as inhibitors of influenza virus. These first generation compounds show IC50 values ranging from low micromolar to high nanomolar in enzyme inhibition and plaque reduction assays with two intact viruses, Influenza H1N1 (A/California/07/2009) and H3N2 (A/Hongkong/8/68).

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