181653-78-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 181653-78-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,6,5 and 3 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 181653-78:
(8*1)+(7*8)+(6*1)+(5*6)+(4*5)+(3*3)+(2*7)+(1*8)=151
151 % 10 = 1
So 181653-78-1 is a valid CAS Registry Number.