21552-41-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21552-41-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,5,5 and 2 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 21552-41:
(7*2)+(6*1)+(5*5)+(4*5)+(3*2)+(2*4)+(1*1)=80
80 % 10 = 0
So 21552-41-0 is a valid CAS Registry Number.