121307-20-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121307-20-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,3,0 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 121307-20:
(8*1)+(7*2)+(6*1)+(5*3)+(4*0)+(3*7)+(2*2)+(1*0)=68
68 % 10 = 8
So 121307-20-8 is a valid CAS Registry Number.