164717-31-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 164717-31-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,4,7,1 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 164717-31:
(8*1)+(7*6)+(6*4)+(5*7)+(4*1)+(3*7)+(2*3)+(1*1)=141
141 % 10 = 1
So 164717-31-1 is a valid CAS Registry Number.