30221-53-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 30221-53-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,2,2 and 1 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 30221-53:
(7*3)+(6*0)+(5*2)+(4*2)+(3*1)+(2*5)+(1*3)=55
55 % 10 = 5
So 30221-53-5 is a valid CAS Registry Number.