164456-57-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 164456-57-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,4,4,5 and 6 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 164456-57:
(8*1)+(7*6)+(6*4)+(5*4)+(4*5)+(3*6)+(2*5)+(1*7)=149
149 % 10 = 9
So 164456-57-9 is a valid CAS Registry Number.