123102-90-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123102-90-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,1,0 and 2 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 123102-90:
(8*1)+(7*2)+(6*3)+(5*1)+(4*0)+(3*2)+(2*9)+(1*0)=69
69 % 10 = 9
So 123102-90-9 is a valid CAS Registry Number.