71505-46-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71505-46-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,5,0 and 5 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 71505-46:
(7*7)+(6*1)+(5*5)+(4*0)+(3*5)+(2*4)+(1*6)=109
109 % 10 = 9
So 71505-46-9 is a valid CAS Registry Number.