74399-66-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74399-66-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,3,9 and 9 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 74399-66:
(7*7)+(6*4)+(5*3)+(4*9)+(3*9)+(2*6)+(1*6)=169
169 % 10 = 9
So 74399-66-9 is a valid CAS Registry Number.