93721-73-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 93721-73-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,7,2 and 1 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 93721-73:
(7*9)+(6*3)+(5*7)+(4*2)+(3*1)+(2*7)+(1*3)=144
144 % 10 = 4
So 93721-73-4 is a valid CAS Registry Number.