189761-54-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 189761-54-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,7,6 and 1 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 189761-54:
(8*1)+(7*8)+(6*9)+(5*7)+(4*6)+(3*1)+(2*5)+(1*4)=194
194 % 10 = 4
So 189761-54-4 is a valid CAS Registry Number.