10/16/2017  TCI NEWS

We distribute TCI NEWS every four weeks, to our valued customers using research chemicals and chromatography products. We hope that you find this helpful for your research.

[Brochure] Quaternary Ammonium Salts

This contains quaternary ammonium salts that are used for various research fields including additives and surfactants in organic chemistry and secondary battery materials.
Q6003E
- Ammonium salts are classified by type of counter anions.
- Many of the long chain quaternary ammonium salts from C1 to over C10 are listed.

Synthetic Organic Chemistry

Product Highlight

Metal-Free Construction of Oxazole Ring by Formal [2+2+1] Cycloaddition

Saito et al. have reported a metal-free synthesis of oxazole rings by a formal [2+2+1] cycloaddition. The reaction is mediated by a catalytic in situ generated iodine (III) species to cyclize an alkyne and nitrile moieties affording di or trisubistuted oxazoles with good yield and complete regioselectivity. It was experimentally determined that the hypervalent iodine moiety is formed in situ by the treatment of a catalytic amount of iodobenzene with mCPBA and bis(trifluoromethanesulfonyl)imide (= Tf2NH). This result represents the first example of a multicomponent reaction using a hypervalent iodine (III) compound.
B2541, I0050

References

New Products

Life Science

Research Article

Antitumor Phytochemical Inhibiting Cancer Stem Cells

The biologically active furanonaphthoquinone napabucasin was found originally in the stem bark of Tabebuia cassinoides.1) It has been reported that napabucasin exhibits the impressive cytotoxicity against KB cells as well as various cancer cell lines.1-4) Furthermore, napabucasin can kill cancer stem cells isolated from many types of cancer tissue through inhibition STAT3 (signal transducer and activator of transcription 3)-driven gene transcription. Since napabucasin effectively suppresses cancer relapse and metastasis in mice, napabucasin is expected to contribute to the development of cancer therapeutics.5)
A3110

References

New Products

Pentafluorophenyl column for HPLC “TCI Stella PFP”

Analysis of Position Isomers by TCI Stella PFP and ODS Column
TCI Stella PFP has the following unique interactions
 • hydrophobic interaction
 • π-π interaction
 • dipole-dipole interaction
 • Hydrogen bond

Column Size :4.6 mm I.D. × 150 mm, 3 μm
Mobile Phase :Methanol / Water
Sample : Methylacetophenones
 
 
 

Reagent Guides 8th Edition

In these Reagent Guides, TCI products have been classified according to research fields, reaction types, applications and basic structures. Please click here to contact TCI local distributors or TCI for a Free Copy!
Synthetic Organic Chemistry & Materials Chemistry

Classification examples:

Synthetic Organic Chemistry
Asymmetric Organocatalysts / Cross-coupling Reaction Using Transition Metal Catalysts / Condensation & Active Esterification

Materials Chemistry
Solar Cell Research Reagents / OLED / Photochromic Compounds
Bioscience & Analytical Science

Classification examples:

Bioscience
Nucleosides / Amino Acids / Sugars / Lipids / Terpenes / Steroids / Antibodies

Analytical Science
GC Derivatizing Reagents / HPLC Labeling Reagents / HPLC Columns / Derivatization Reagents for MS

TCI has a wide variety of catalogs and product brochures. Most of them are available in PDF format and can be downloaded from our website.

» Other Catalogs & Product Brochures

TCI Website Tips

How to Open Ampule Containers

Is your lab having trouble with ampule safety? TCI created a useful web page showing how to open ampules that reduce breakages, sharps injuries and contamination. Please be sure to review our website for more ampule safety information and share with your colleagues!

Reagent Guide - Online Version Available on TCI Website

TCI Reagent Guides, product catalogs by category, are very useful as reference for finding reagents. Do you know Reagent Guides are also available as online version on our website?
You click “Products” tab, then you can go around our product information by category easily.

Additionally, benefits of online catalogs include;
-New products that aren't included in the paper version are added every day.
-Product categories that aren’t included in the paper version are available, and new categories are uploaded timely.

Please click the following product categories, and find your chemicals!

Exhibitions/Meetings/Shows

120th KCS General Meeting & Exposition

Kimdaejung Convention Center, Gwangju, Korea
Oct 18 - 20, 2017
» TCI exhibition information      » Event details

2017 Annual Meeting of Chinese Chemical Society Located in Taipei

National Chiayi University, Taiwan
Dec 1-2, 2017
» TCI exhibition information      » Event details

Other Information

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