74591-89-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74591-89-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,5,9 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 74591-89:
(7*7)+(6*4)+(5*5)+(4*9)+(3*1)+(2*8)+(1*9)=162
162 % 10 = 2
So 74591-89-2 is a valid CAS Registry Number.