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1320232-03-8

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1320232-03-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1320232-03-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,2,0,2,3 and 2 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1320232-03:
(9*1)+(8*3)+(7*2)+(6*0)+(5*2)+(4*3)+(3*2)+(2*0)+(1*3)=78
78 % 10 = 8
So 1320232-03-8 is a valid CAS Registry Number.

1320232-03-8Relevant articles and documents

TBAI or KI-Promoted Oxidative Coupling of Enamines and N-Tosylhydrazine: An Unconventional Method toward 1,5- and 1,4,5-Substituted 1,2,3-Triazoles

Huang, Wei,Zhu, Chuanle,Li, Minke,Yu, Yue,Wu, Wanqing,Tu, Zhengchao,Jiang, Huanfeng

supporting information, p. 3117 - 3123 (2018/08/01)

A novel method for the synthesis of 1,5- and 1,4,5-substituted 1,2,3-triazoles has been reported. This approach is promoted by iodine-TBHP oxidation system using enamines and N-tosylhydrazine as materials, which avoid the dependence of traditional methods on azides and transition metals. Through this approach, various 1,5- and 1,4,5-substituted 1,2,3-triazoles were delivered in moderate to high yields. The mechanistic study indicated that an amino exchange would be involved in the reaction process. Moreover, the product methyl 1-(2-methoxyphenyl)-4-methyl-1H-1,2,3-triazole-5-carboxylate is a useful precursor to anti-influenza A agent, and further application research was conducted. (Figure presented.).

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