73889-56-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73889-56-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,8,8 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 73889-56:
(7*7)+(6*3)+(5*8)+(4*8)+(3*9)+(2*5)+(1*6)=182
182 % 10 = 2
So 73889-56-2 is a valid CAS Registry Number.