128703-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128703-71-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,7,0 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 128703-71:
(8*1)+(7*2)+(6*8)+(5*7)+(4*0)+(3*3)+(2*7)+(1*1)=129
129 % 10 = 9
So 128703-71-9 is a valid CAS Registry Number.