10521-22-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 10521-22-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,0,5,2 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 10521-22:
(7*1)+(6*0)+(5*5)+(4*2)+(3*1)+(2*2)+(1*2)=49
49 % 10 = 9
So 10521-22-9 is a valid CAS Registry Number.