74304-33-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74304-33-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,3,0 and 4 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 74304-33:
(7*7)+(6*4)+(5*3)+(4*0)+(3*4)+(2*3)+(1*3)=109
109 % 10 = 9
So 74304-33-9 is a valid CAS Registry Number.