4225-90-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4225-90-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,2,2 and 5 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 4225-90:
(6*4)+(5*2)+(4*2)+(3*5)+(2*9)+(1*0)=75
75 % 10 = 5
So 4225-90-5 is a valid CAS Registry Number.