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89221-21-6

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89221-21-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89221-21-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,2,2 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 89221-21:
(7*8)+(6*9)+(5*2)+(4*2)+(3*1)+(2*2)+(1*1)=136
136 % 10 = 6
So 89221-21-6 is a valid CAS Registry Number.

89221-21-6SDS

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 4-(1,2-dihydrotriazol-5-ylidene)cyclohexa-2,5-dien-1-one

1.2 Other means of identification

Product number -
Other names 4-(1H-1,2,3-triazol-5-yl)phenol

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:89221-21-6 SDS

89221-21-6Downstream Products

89221-21-6Relevant articles and documents

Silica immobilized copper N-heterocyclic carbene: An effective route to 1,2,3-triazoles via azide-alkyne cycloaddition and multicomponent click reaction

Garg, Anirban,Borah, Nobomi,Sultana, Jasmin,Kulshrestha, Akshay,Kumar, Arvind,Sarma, Diganta

, (2021/06/11)

A new silica supported copper N-heterocyclic carbene (Cu-NHC@SiO2) complex is prepared and characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and X-ray photoelectron spectroscopy (XPS) analyses. This complex is an efficient and easily retrievable catalyst for 1,2,3-triazole synthesis through direct azide-alkyne cycloaddition reaction as well as one-pot reaction using arylboronic acids. This catalytic system is also suitable for synthesis of 4-aryl-NH-1,2,3-triazoles from diverse benzaldehydes. Further, the catalyst can efficiently be recycled up to fifth cycle for all the three methods of 1,2,3-triazole synthesis through direct azide-alkyne cycloaddition and multi-component reactions.

Method of catalytically synthesizing 4-aryl-NH-1,2,3-triazole derivative under microwave radiation

-

Paragraph 0011; 0026, (2018/03/26)

The invention discloses a method of catalytically synthesizing 4-aryl-NH-1,2,3-triazole derivative under microwave radiation. The method includes the steps of: successively adding substituted 2-nitroolefin, sodium azide, TfOH, and pyridine into a reaction

Recyclable Acid–Base Bifunctional Core–Shell–Shell Nanosphere Catalyzed Synthesis of 5-Aryl-1H-1,2,3-triazoles through the “One-Pot” Cyclization of Aldehydes, Nitromethane, and Sodium Azide

Liu, Lei,Ai, Yongjian,Li, Dong,Qi, Li,Zhou, Junjie,Tang, Zhike,Shao, Zixing,Liang, Qionglin,Sun, Hong-Bin

, p. 3131 - 3137 (2017/08/29)

A magnetically separable core–shell–shell nanosphere, Fe3O4@nSiO2-SO3H@MS-NHCOCH3 (n=nonporous, MS=microporous SiO2), was fabricated as an acid–base collaborative catalyst for the three-component cyclization of aromatic aldehydes, nitroalkane, and sodium azide to afford 1H-1,2,3-triazoles. The bifunctional heterogeneous catalyst showed high activity for this transformation and good chemoselectivity, and toxic HN3 was not released during the course of the reaction. A variety of aldehydes were transformed into the corresponding 5-aryl-1H-1,2,3-triazoles in up to 98 % yield. Furthermore, the catalyst could be recovered by using an external magnetic field and reused many times without any loss in activity. In contrast, a homogeneous catalyst system comprising ammonium acetate/acetic acid also worked in this three-component cyclization to afford 1H-1,2,3-triazoles.

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