181715-09-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 181715-09-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,7,1 and 5 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 181715-09:
(8*1)+(7*8)+(6*1)+(5*7)+(4*1)+(3*5)+(2*0)+(1*9)=133
133 % 10 = 3
So 181715-09-3 is a valid CAS Registry Number.