207128-70-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 207128-70-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,7,1,2 and 8 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 207128-70:
(8*2)+(7*0)+(6*7)+(5*1)+(4*2)+(3*8)+(2*7)+(1*0)=109
109 % 10 = 9
So 207128-70-9 is a valid CAS Registry Number.