121838-04-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121838-04-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,8,3 and 8 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 121838-04:
(8*1)+(7*2)+(6*1)+(5*8)+(4*3)+(3*8)+(2*0)+(1*4)=108
108 % 10 = 8
So 121838-04-8 is a valid CAS Registry Number.