1171919-20-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1171919-20-2 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 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1171919-20:
(9*1)+(8*1)+(7*7)+(6*1)+(5*9)+(4*1)+(3*9)+(2*2)+(1*0)=152
152 % 10 = 2
So 1171919-20-2 is a valid CAS Registry Number.