121621-53-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121621-53-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,6,2 and 1 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 121621-53:
(8*1)+(7*2)+(6*1)+(5*6)+(4*2)+(3*1)+(2*5)+(1*3)=82
82 % 10 = 2
So 121621-53-2 is a valid CAS Registry Number.