183666-43-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 183666-43-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,3,6,6 and 6 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 183666-43:
(8*1)+(7*8)+(6*3)+(5*6)+(4*6)+(3*6)+(2*4)+(1*3)=165
165 % 10 = 5
So 183666-43-5 is a valid CAS Registry Number.