121431-78-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121431-78-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,4,3 and 1 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 121431-78:
(8*1)+(7*2)+(6*1)+(5*4)+(4*3)+(3*1)+(2*7)+(1*8)=85
85 % 10 = 5
So 121431-78-5 is a valid CAS Registry Number.