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57697-74-2

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57697-74-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57697-74-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,6,9 and 7 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 57697-74:
(7*5)+(6*7)+(5*6)+(4*9)+(3*7)+(2*7)+(1*4)=182
182 % 10 = 2
So 57697-74-2 is a valid CAS Registry Number.

57697-74-2Downstream Products

57697-74-2Relevant articles and documents

One-pot Van Leusen synthesis of 4,5-disubstituted oxazoles in ionic liquids

Wu, Bo,Wen, Jun,Zhang, Ji,Li, Jing,Xiang, Yong-Zhe,Yu, Xiao-Qi

experimental part, p. 500 - 504 (2009/08/07)

An efficient and mild protocol for the preparation of 4,5-disubstituted oxazoles through an improved one-pot van Leusen oxazole synthesis in ionic liquids is described. The oxazole products were prepared from tosylmethyl isocyanide (TosMIC), aliphatic hal

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