188728-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188728-18-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,7,2 and 8 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 188728-18:
(8*1)+(7*8)+(6*8)+(5*7)+(4*2)+(3*8)+(2*1)+(1*8)=189
189 % 10 = 9
So 188728-18-9 is a valid CAS Registry Number.