23920-84-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23920-84-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,9,2 and 0 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 23920-84:
(7*2)+(6*3)+(5*9)+(4*2)+(3*0)+(2*8)+(1*4)=105
105 % 10 = 5
So 23920-84-5 is a valid CAS Registry Number.