83930-55-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83930-55-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,9,3 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 83930-55:
(7*8)+(6*3)+(5*9)+(4*3)+(3*0)+(2*5)+(1*5)=146
146 % 10 = 6
So 83930-55-6 is a valid CAS Registry Number.