178181-56-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 178181-56-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,1,8 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 178181-56:
(8*1)+(7*7)+(6*8)+(5*1)+(4*8)+(3*1)+(2*5)+(1*6)=161
161 % 10 = 1
So 178181-56-1 is a valid CAS Registry Number.