20749-43-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20749-43-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,7,4 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 20749-43:
(7*2)+(6*0)+(5*7)+(4*4)+(3*9)+(2*4)+(1*3)=103
103 % 10 = 3
So 20749-43-3 is a valid CAS Registry Number.