30320-34-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 30320-34-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,3,2 and 0 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 30320-34:
(7*3)+(6*0)+(5*3)+(4*2)+(3*0)+(2*3)+(1*4)=54
54 % 10 = 4
So 30320-34-4 is a valid CAS Registry Number.