81711-62-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81711-62-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,1 and 1 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81711-62:
(7*8)+(6*1)+(5*7)+(4*1)+(3*1)+(2*6)+(1*2)=118
118 % 10 = 8
So 81711-62-8 is a valid CAS Registry Number.
81711-62-8Relevant articles and documents
Process for the preparation of pure 1-phenyl-3-carbalkoxy-5-hydroxypyrazoles
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, (2008/06/13)
Process for the preparation of pure 1-phenyl-3-carbalkoxy-5-hydroxypyrazoles of the general formula STR1 in which R denotes methyl or ethyl, by reaction of acetylsuccinic esters with phenyldiazonium chloride and a base with pKB value of 3.6 to