57259-59-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57259-59-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,2,5 and 9 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 57259-59:
(7*5)+(6*7)+(5*2)+(4*5)+(3*9)+(2*5)+(1*9)=153
153 % 10 = 3
So 57259-59-3 is a valid CAS Registry Number.
57259-59-3Relevant academic research and scientific papers
Method for producing 1-unsubstituted pyrazolo[3,4-b]pyridine ketones
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, (2008/06/13)
A new process for the production of pyrazolo-[3,4-b]pyridine ketones which are unsubstituted in the 1-position comprises reacting a 1-furanylmethylpyrazolo[3,4-b]pyridine ketone with an inorganic strong mineral acid like sulfuric acid, phosphoric acid or polyphosphoric acid.