1017791-11-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1017791-11-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,1,7,7,9 and 1 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1017791-11:
(9*1)+(8*0)+(7*1)+(6*7)+(5*7)+(4*9)+(3*1)+(2*1)+(1*1)=135
135 % 10 = 5
So 1017791-11-5 is a valid CAS Registry Number.