121288-91-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121288-91-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,2,8 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 121288-91:
(8*1)+(7*2)+(6*1)+(5*2)+(4*8)+(3*8)+(2*9)+(1*1)=113
113 % 10 = 3
So 121288-91-3 is a valid CAS Registry Number.