128775-31-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128775-31-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,7,7 and 5 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 128775-31:
(8*1)+(7*2)+(6*8)+(5*7)+(4*7)+(3*5)+(2*3)+(1*1)=155
155 % 10 = 5
So 128775-31-5 is a valid CAS Registry Number.