1164542-25-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1164542-25-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,6,4,5,4 and 2 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1164542-25:
(9*1)+(8*1)+(7*6)+(6*4)+(5*5)+(4*4)+(3*2)+(2*2)+(1*5)=139
139 % 10 = 9
So 1164542-25-9 is a valid CAS Registry Number.