18985-23-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18985-23-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,9,8 and 5 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 18985-23:
(7*1)+(6*8)+(5*9)+(4*8)+(3*5)+(2*2)+(1*3)=154
154 % 10 = 4
So 18985-23-4 is a valid CAS Registry Number.