857440-54-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 857440-54-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,4,4 and 0 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 857440-54:
(8*8)+(7*5)+(6*7)+(5*4)+(4*4)+(3*0)+(2*5)+(1*4)=191
191 % 10 = 1
So 857440-54-1 is a valid CAS Registry Number.