1017961-91-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1017961-91-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,1,7,9,6 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1017961-91:
(9*1)+(8*0)+(7*1)+(6*7)+(5*9)+(4*6)+(3*1)+(2*9)+(1*1)=149
149 % 10 = 9
So 1017961-91-9 is a valid CAS Registry Number.