128816-17-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128816-17-1 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 6 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 128816-17:
(8*1)+(7*2)+(6*8)+(5*8)+(4*1)+(3*6)+(2*1)+(1*7)=141
141 % 10 = 1
So 128816-17-1 is a valid CAS Registry Number.