121731-28-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121731-28-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,7,3 and 1 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 121731-28:
(8*1)+(7*2)+(6*1)+(5*7)+(4*3)+(3*1)+(2*2)+(1*8)=90
90 % 10 = 0
So 121731-28-0 is a valid CAS Registry Number.