59918-81-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 59918-81-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,9,9,1 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 59918-81:
(7*5)+(6*9)+(5*9)+(4*1)+(3*8)+(2*8)+(1*1)=179
179 % 10 = 9
So 59918-81-9 is a valid CAS Registry Number.