18377-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18377-89-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,3,7 and 7 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 18377-89:
(7*1)+(6*8)+(5*3)+(4*7)+(3*7)+(2*8)+(1*9)=144
144 % 10 = 4
So 18377-89-4 is a valid CAS Registry Number.