2645-43-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2645-43-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,6,4 and 5 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 2645-43:
(6*2)+(5*6)+(4*4)+(3*5)+(2*4)+(1*3)=84
84 % 10 = 4
So 2645-43-4 is a valid CAS Registry Number.