188544-09-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188544-09-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,5,4 and 4 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 188544-09:
(8*1)+(7*8)+(6*8)+(5*5)+(4*4)+(3*4)+(2*0)+(1*9)=174
174 % 10 = 4
So 188544-09-4 is a valid CAS Registry Number.