128971-82-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128971-82-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,9,7 and 1 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 128971-82:
(8*1)+(7*2)+(6*8)+(5*9)+(4*7)+(3*1)+(2*8)+(1*2)=164
164 % 10 = 4
So 128971-82-4 is a valid CAS Registry Number.