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1-(4-N,N-DIMETHYLAMINOPHENYL)METHYLENEIMMONIUM-3-PYRAZOLIDINE-1,2-INNER SALT is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

19948-39-1

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19948-39-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19948-39-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,9,4 and 8 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 19948-39:
(7*1)+(6*9)+(5*9)+(4*4)+(3*8)+(2*3)+(1*9)=161
161 % 10 = 1
So 19948-39-1 is a valid CAS Registry Number.

19948-39-1Downstream Products

19948-39-1Relevant academic research and scientific papers

Solvent incorporated sequential [3 + 2] annulation/substitution reaction of azomethine imines and propargyl sulfur ylide

Shen, Shoujie,Yang, Yanli,Duan, Jiangyan,Jia, Zhenhu,Liang, Jinyan

supporting information, p. 1068 - 1072 (2018/02/22)

A novel solvent incorporated sequential [3 + 2] cycloaddition/substitution reaction of azomethine imines with propargyl sulfur ylide was developed. In the actual three-component reaction, propargyl sulfur ylide acts as a dipole reagent to furnish the annu

[3 + 2]-Cycloadditions of Azomethine Imines and Ynolates

Winterton, Sarah E.,Ready, Joseph M.

supporting information, p. 2608 - 2611 (2016/06/15)

A novel [3 + 2]-cycloaddition between azomethine imines and lithium ynolates is described to synthesize bicyclic pyrazolidinones. These bicyclic pyrazolidinones are versatile intermediates to form β-amino acids and monocyclic pyrazolidinones. High diaster

Copper(I) acetate-catalyzed cycloaddition between azomethine imines and propiolates under additive-free conditions

Shao, Changwei,Zhang, Qun,Cheng, Guolin,Cheng, Chuanjie,Wang, Xinyan,Hu, Yuefei

, p. 6443 - 6448 (2013/10/21)

Because propiolates easily undergo base-catalyzed self-Michael addition, most popular catalytic systems in CuAAC cannot be used in the cycloaddition between azomethine imines and propiolates, because such reactions usually require the use of tertiary amin

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