223749-72-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 223749-72-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,7,4 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 223749-72:
(8*2)+(7*2)+(6*3)+(5*7)+(4*4)+(3*9)+(2*7)+(1*2)=142
142 % 10 = 2
So 223749-72-2 is a valid CAS Registry Number.