91521-43-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91521-43-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,5,2 and 1 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 91521-43:
(7*9)+(6*1)+(5*5)+(4*2)+(3*1)+(2*4)+(1*3)=116
116 % 10 = 6
So 91521-43-6 is a valid CAS Registry Number.