717917-51-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 717917-51-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,1,7,9,1 and 7 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 717917-51:
(8*7)+(7*1)+(6*7)+(5*9)+(4*1)+(3*7)+(2*5)+(1*1)=186
186 % 10 = 6
So 717917-51-6 is a valid CAS Registry Number.