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16664-08-7

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16664-08-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 16664-08-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,6,6 and 4 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 16664-08:
(7*1)+(6*6)+(5*6)+(4*6)+(3*4)+(2*0)+(1*8)=117
117 % 10 = 7
So 16664-08-7 is a valid CAS Registry Number.

16664-08-7Downstream Products

16664-08-7Relevant articles and documents

Iridium(III)-Catalyzed Selective and Mild C-H Amidation of Cyclic N-Sulfonyl Ketimines with Organic Azides

Maraswami, Manikantha,Chen, Gang,Loh, Teck-Peng

supporting information, p. 416 - 421 (2017/11/13)

A general protocol for iridium catalyzed direct C?H amidation of cyclic N-sulfonyl ketimines using sulfonyl, acyl and aryl azides as nitrogen source is reported herein. The reaction takes place at room temperature with acyl and aryl azides, while an elevated temperature needed with sulfonyl azides to furnish aminated sultams in excellent yields with complete chemo and regioselectivity, thus providing a robust and environmentally benign process to the synthesis of aminosultams. (Figure presented.).

Synthesis and biological activity of some novel N-aryl-nprime;-[5-(pyrid-4- yl)-1,3,4-thiadiazol-2-yl]ureas

Song, Xin-Jian,Tan, Xiao-Hong,Wang, Yan-Gang

, p. 1907 - 1913 (2008/02/10)

With the aim of searching for biologically active urea compounds, a series of new N-aryl-N'-[5-(pyrid-4-yl)-1,3,4-thiadiazol-2-yl]ureas have been designed and synthesized. Their structures were confirmed by IR, 1H NMR, and elemental analysis. The crystal

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