181647-78-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 181647-78-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,6,4 and 7 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 181647-78:
(8*1)+(7*8)+(6*1)+(5*6)+(4*4)+(3*7)+(2*7)+(1*8)=159
159 % 10 = 9
So 181647-78-9 is a valid CAS Registry Number.