1164553-99-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1164553-99-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,6,4,5,5 and 3 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1164553-99:
(9*1)+(8*1)+(7*6)+(6*4)+(5*5)+(4*5)+(3*3)+(2*9)+(1*9)=164
164 % 10 = 4
So 1164553-99-4 is a valid CAS Registry Number.