54638-64-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54638-64-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,6,3 and 8 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 54638-64:
(7*5)+(6*4)+(5*6)+(4*3)+(3*8)+(2*6)+(1*4)=141
141 % 10 = 1
So 54638-64-1 is a valid CAS Registry Number.