54643-62-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54643-62-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,6,4 and 3 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 54643-62:
(7*5)+(6*4)+(5*6)+(4*4)+(3*3)+(2*6)+(1*2)=128
128 % 10 = 8
So 54643-62-8 is a valid CAS Registry Number.