12269-91-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 12269-91-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,2,6 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 12269-91:
(7*1)+(6*2)+(5*2)+(4*6)+(3*9)+(2*9)+(1*1)=99
99 % 10 = 9
So 12269-91-9 is a valid CAS Registry Number.