102173-09-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 102173-09-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,2,1,7 and 3 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 102173-09:
(8*1)+(7*0)+(6*2)+(5*1)+(4*7)+(3*3)+(2*0)+(1*9)=71
71 % 10 = 1
So 102173-09-1 is a valid CAS Registry Number.