1171918-77-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1171918-77-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,1,9,1 and 8 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1171918-77:
(9*1)+(8*1)+(7*7)+(6*1)+(5*9)+(4*1)+(3*8)+(2*7)+(1*7)=166
166 % 10 = 6
So 1171918-77-6 is a valid CAS Registry Number.