23239-53-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23239-53-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,2,3 and 9 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 23239-53:
(7*2)+(6*3)+(5*2)+(4*3)+(3*9)+(2*5)+(1*3)=94
94 % 10 = 4
So 23239-53-4 is a valid CAS Registry Number.