71591-38-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71591-38-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,5,9 and 1 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 71591-38:
(7*7)+(6*1)+(5*5)+(4*9)+(3*1)+(2*3)+(1*8)=133
133 % 10 = 3
So 71591-38-3 is a valid CAS Registry Number.