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77853-40-8

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77853-40-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77853-40-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,8,5 and 3 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 77853-40:
(7*7)+(6*7)+(5*8)+(4*5)+(3*3)+(2*4)+(1*0)=168
168 % 10 = 8
So 77853-40-8 is a valid CAS Registry Number.

77853-40-8Relevant articles and documents

A general and practical sulfonylation of benzylic ammonium salts with sulfonyl hydrazides for the synthesis of sulfones

Zhu, Haibo,Zhang, Yingying,Liu, Yishuai,Yang, Liu,Xie, Zongbo,Jiang, Guofang,Le, Zhang-Gao

, (2020)

A practical and efficient approach adopting transition-metal-free cross-coupling of sulfonyl hydrazides with benzyl ammonium salts has been developed to synthesize benzyl sulfones using Cs2CO3 as base under mild conditions. The protocol employs stable and easy to handle coupling partners, and is endowed with good substrate compatibility, leading to functional benzyl sulfones in good yields.

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