21486-54-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21486-54-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,4,8 and 6 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 21486-54:
(7*2)+(6*1)+(5*4)+(4*8)+(3*6)+(2*5)+(1*4)=104
104 % 10 = 4
So 21486-54-4 is a valid CAS Registry Number.