515121-43-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 515121-43-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,1,5,1,2 and 1 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 515121-43:
(8*5)+(7*1)+(6*5)+(5*1)+(4*2)+(3*1)+(2*4)+(1*3)=104
104 % 10 = 4
So 515121-43-4 is a valid CAS Registry Number.