186616-23-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 186616-23-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,6,6,1 and 6 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 186616-23:
(8*1)+(7*8)+(6*6)+(5*6)+(4*1)+(3*6)+(2*2)+(1*3)=159
159 % 10 = 9
So 186616-23-9 is a valid CAS Registry Number.