172172-92-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172172-92-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,1,7 and 2 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 172172-92:
(8*1)+(7*7)+(6*2)+(5*1)+(4*7)+(3*2)+(2*9)+(1*2)=128
128 % 10 = 8
So 172172-92-8 is a valid CAS Registry Number.