181957-03-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 181957-03-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,9,5 and 7 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 181957-03:
(8*1)+(7*8)+(6*1)+(5*9)+(4*5)+(3*7)+(2*0)+(1*3)=159
159 % 10 = 9
So 181957-03-9 is a valid CAS Registry Number.