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57049-53-3

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57049-53-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57049-53-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,0,4 and 9 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 57049-53:
(7*5)+(6*7)+(5*0)+(4*4)+(3*9)+(2*5)+(1*3)=133
133 % 10 = 3
So 57049-53-3 is a valid CAS Registry Number.

57049-53-3Downstream Products

57049-53-3Relevant articles and documents

Synthesis of Sulfonylhydrazine-1,2-dicarboxylates from Thiols and Dialkyl Azodicarboxylates

Zhou, Bingnan,Yang, Xiao,Xu, Jiaxi

, p. 1632 - 1640 (2017/03/21)

1-Sulfonylhydrazine-1,2-dicarboxylates are efficiently prepared via nucleophilic addition of thiols/thiophenols to dialkyl azodicarboxylates and subsequent oxidation with MCPBA. The protocol represents the first application of sulfenylhydrazines as precur

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