1171922-90-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1171922-90-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,1,9,2 and 2 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1171922-90:
(9*1)+(8*1)+(7*7)+(6*1)+(5*9)+(4*2)+(3*2)+(2*9)+(1*0)=149
149 % 10 = 9
So 1171922-90-9 is a valid CAS Registry Number.