30203-64-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 30203-64-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,2,0 and 3 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 30203-64:
(7*3)+(6*0)+(5*2)+(4*0)+(3*3)+(2*6)+(1*4)=56
56 % 10 = 6
So 30203-64-6 is a valid CAS Registry Number.