1521225-07-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1521225-07-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,2,1,2,2 and 5 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1521225-07:
(9*1)+(8*5)+(7*2)+(6*1)+(5*2)+(4*2)+(3*5)+(2*0)+(1*7)=109
109 % 10 = 9
So 1521225-07-9 is a valid CAS Registry Number.