854838-42-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 854838-42-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,4,8,3 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 854838-42:
(8*8)+(7*5)+(6*4)+(5*8)+(4*3)+(3*8)+(2*4)+(1*2)=209
209 % 10 = 9
So 854838-42-9 is a valid CAS Registry Number.