188530-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188530-89-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,5,3 and 0 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 188530-89:
(8*1)+(7*8)+(6*8)+(5*5)+(4*3)+(3*0)+(2*8)+(1*9)=174
174 % 10 = 4
So 188530-89-4 is a valid CAS Registry Number.