23578-98-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23578-98-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,5,7 and 8 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 23578-98:
(7*2)+(6*3)+(5*5)+(4*7)+(3*8)+(2*9)+(1*8)=135
135 % 10 = 5
So 23578-98-5 is a valid CAS Registry Number.