123491-26-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123491-26-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,4,9 and 1 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 123491-26:
(8*1)+(7*2)+(6*3)+(5*4)+(4*9)+(3*1)+(2*2)+(1*6)=109
109 % 10 = 9
So 123491-26-9 is a valid CAS Registry Number.