73331-42-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73331-42-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,3,3 and 1 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 73331-42:
(7*7)+(6*3)+(5*3)+(4*3)+(3*1)+(2*4)+(1*2)=107
107 % 10 = 7
So 73331-42-7 is a valid CAS Registry Number.