21232-53-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21232-53-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,2,3 and 2 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21232-53:
(7*2)+(6*1)+(5*2)+(4*3)+(3*2)+(2*5)+(1*3)=61
61 % 10 = 1
So 21232-53-1 is a valid CAS Registry Number.