73930-45-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73930-45-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,9,3 and 0 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 73930-45:
(7*7)+(6*3)+(5*9)+(4*3)+(3*0)+(2*4)+(1*5)=137
137 % 10 = 7
So 73930-45-7 is a valid CAS Registry Number.