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57883-84-8

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57883-84-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57883-84-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,8,8 and 3 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 57883-84:
(7*5)+(6*7)+(5*8)+(4*8)+(3*3)+(2*8)+(1*4)=178
178 % 10 = 8
So 57883-84-8 is a valid CAS Registry Number.

57883-84-8Downstream Products

57883-84-8Relevant articles and documents

Highly efficient synthesis of ureas and carbamates from amides by iodosylbenzene-induced hofmann rearrangement

Liu, Peng,Wang, Zhiming,Hu, Xianming

experimental part, p. 1994 - 2000 (2012/05/05)

A simple and efficient method for the synthesis of 1,3-disubstituted ureas and carbamates from amides by using iodosylbenzene as the oxidant is described. Symmetric and asymmetric ureas and carbamates can be prepared by this procedure in up to 98 % yield. Ureidopeptides can also be prepared in good yield by this method. A simple and efficient method for the synthesis of 1,3-disubstituted ureas and carbamates from amides by using iodosylbenzene as the oxidant is described. By using this method, heterocyclic products can be easily obtained in excellent yield. Ureidopeptides can also be prepared in good yield by this procedure. Copyright

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