665000-43-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 665000-43-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,5,0,0 and 0 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 665000-43:
(8*6)+(7*6)+(6*5)+(5*0)+(4*0)+(3*0)+(2*4)+(1*3)=131
131 % 10 = 1
So 665000-43-1 is a valid CAS Registry Number.