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304668-43-7

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304668-43-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 304668-43-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,4,6,6 and 8 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 304668-43:
(8*3)+(7*0)+(6*4)+(5*6)+(4*6)+(3*8)+(2*4)+(1*3)=137
137 % 10 = 7
So 304668-43-7 is a valid CAS Registry Number.

304668-43-7Downstream Products

304668-43-7Relevant articles and documents

Copper(ii)-catalyzed coupling reaction: An efficient and regioselective approach to N′,N′-diaryl acylhydrazines

Zhang, Ji-Quan,Huang, Gong-Bin,Weng, Jiang,Lu, Gui,Chan, Albert S. C.

, p. 2055 - 2063 (2015/03/05)

Using N′-aryl acylhydrazines as aryl donors, a novel copper(ii)-catalyzed homo-coupling reaction of N′-aryl acylhydrazines has been developed for the synthesis of N′,N′-diaryl acylhydrazines. We also provided a complementary procedure for the preparation of unsymmetrical diaryl acylhydrazines via cross-coupling reaction. These protocols featured mild reaction conditions, wide functional group tolerance and highly regioselective products. Control experiments indicated that this kind of coupling reaction might undergo a transient acyl diazene intermediate. This journal is

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