217170-73-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 217170-73-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,7,1,7 and 0 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 217170-73:
(8*2)+(7*1)+(6*7)+(5*1)+(4*7)+(3*0)+(2*7)+(1*3)=115
115 % 10 = 5
So 217170-73-5 is a valid CAS Registry Number.