1189311-71-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1189311-71-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,8,9,3,1 and 1 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1189311-71:
(9*1)+(8*1)+(7*8)+(6*9)+(5*3)+(4*1)+(3*1)+(2*7)+(1*1)=164
164 % 10 = 4
So 1189311-71-4 is a valid CAS Registry Number.