71559-26-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71559-26-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,5,5 and 9 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 71559-26:
(7*7)+(6*1)+(5*5)+(4*5)+(3*9)+(2*2)+(1*6)=137
137 % 10 = 7
So 71559-26-7 is a valid CAS Registry Number.