857542-11-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 857542-11-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,5,4 and 2 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 857542-11:
(8*8)+(7*5)+(6*7)+(5*5)+(4*4)+(3*2)+(2*1)+(1*1)=191
191 % 10 = 1
So 857542-11-1 is a valid CAS Registry Number.