179991-80-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 179991-80-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,9,9,9 and 1 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 179991-80:
(8*1)+(7*7)+(6*9)+(5*9)+(4*9)+(3*1)+(2*8)+(1*0)=211
211 % 10 = 1
So 179991-80-1 is a valid CAS Registry Number.