840511-45-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 840511-45-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,4,0,5,1 and 1 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 840511-45:
(8*8)+(7*4)+(6*0)+(5*5)+(4*1)+(3*1)+(2*4)+(1*5)=137
137 % 10 = 7
So 840511-45-7 is a valid CAS Registry Number.