84557-23-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 84557-23-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,5,5 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 84557-23:
(7*8)+(6*4)+(5*5)+(4*5)+(3*7)+(2*2)+(1*3)=153
153 % 10 = 3
So 84557-23-3 is a valid CAS Registry Number.