100120-74-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 100120-74-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,1,2 and 0 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 100120-74:
(8*1)+(7*0)+(6*0)+(5*1)+(4*2)+(3*0)+(2*7)+(1*4)=39
39 % 10 = 9
So 100120-74-9 is a valid CAS Registry Number.