128811-86-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128811-86-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,8,1 and 1 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 128811-86:
(8*1)+(7*2)+(6*8)+(5*8)+(4*1)+(3*1)+(2*8)+(1*6)=139
139 % 10 = 9
So 128811-86-9 is a valid CAS Registry Number.