81225-42-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81225-42-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,2,2 and 5 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81225-42:
(7*8)+(6*1)+(5*2)+(4*2)+(3*5)+(2*4)+(1*2)=105
105 % 10 = 5
So 81225-42-5 is a valid CAS Registry Number.