845817-44-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 845817-44-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,4,5,8,1 and 7 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 845817-44:
(8*8)+(7*4)+(6*5)+(5*8)+(4*1)+(3*7)+(2*4)+(1*4)=199
199 % 10 = 9
So 845817-44-9 is a valid CAS Registry Number.