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57651-41-9

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57651-41-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57651-41-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,6,5 and 1 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 57651-41:
(7*5)+(6*7)+(5*6)+(4*5)+(3*1)+(2*4)+(1*1)=139
139 % 10 = 9
So 57651-41-9 is a valid CAS Registry Number.

57651-41-9Relevant articles and documents

Aerobic cascade oxidation of substituted cyclopentane-1,2-diones using metalloporphyrin catalysts

Maljutenko, Karolin,Borovkov, Victor,Kananovich, Dzmitry,J?rving, Ivar,Lopp, Margus

, p. 661 - 664 (2018/01/05)

A method for the aerobic cascade oxidation of cyclopentane-1,2-diones using metal porphyrins as catalysts, yielding hydroxydiacids 2, ketoacid 3 and diketoacids 4 which are the intermediates of important biologically active compounds is reported. This method is operationally simple and can be employed under ambient conditions.

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