18520-35-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18520-35-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,5,2 and 0 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 18520-35:
(7*1)+(6*8)+(5*5)+(4*2)+(3*0)+(2*3)+(1*5)=99
99 % 10 = 9
So 18520-35-9 is a valid CAS Registry Number.