77164-53-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77164-53-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,1,6 and 4 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 77164-53:
(7*7)+(6*7)+(5*1)+(4*6)+(3*4)+(2*5)+(1*3)=145
145 % 10 = 5
So 77164-53-5 is a valid CAS Registry Number.