76521-00-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 76521-00-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,5,2 and 1 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 76521-00:
(7*7)+(6*6)+(5*5)+(4*2)+(3*1)+(2*0)+(1*0)=121
121 % 10 = 1
So 76521-00-1 is a valid CAS Registry Number.