33830-53-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33830-53-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,8,3 and 0 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 33830-53:
(7*3)+(6*3)+(5*8)+(4*3)+(3*0)+(2*5)+(1*3)=104
104 % 10 = 4
So 33830-53-4 is a valid CAS Registry Number.