521973-65-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 521973-65-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,2,1,9,7 and 3 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 521973-65:
(8*5)+(7*2)+(6*1)+(5*9)+(4*7)+(3*3)+(2*6)+(1*5)=159
159 % 10 = 9
So 521973-65-9 is a valid CAS Registry Number.