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1616956-42-3

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1616956-42-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1616956-42-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,6,9,5 and 6 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1616956-42:
(9*1)+(8*6)+(7*1)+(6*6)+(5*9)+(4*5)+(3*6)+(2*4)+(1*2)=193
193 % 10 = 3
So 1616956-42-3 is a valid CAS Registry Number.

1616956-42-3Downstream Products

1616956-42-3Relevant articles and documents

Synthesis of Isoselenazoles and Isothiazoles from Demethoxylative Cycloaddition of Alkynyl Oxime Ethers

Zhang, Zhu-Zhu,Chen, Rong,Zhang, Xiao-Hong,Zhang, Xing-Guo

, p. 632 - 642 (2020/12/22)

A general method for the synthesis of isoselenazoles and isothiazoles has been developed by the base-promoted demethoxylative cycloaddition of alkynyl oxime ethers using the cheap and inactive Se powder and Na2S as selenium and sulfur sources. This transformation features the direct construction of N-, Se-, and S-containing heterocycles through the formation of N-Se/S and C-Se/S bonds in one-pot reactions with excellent functional group tolerance.

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