1164507-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1164507-18-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,6,4,5,0 and 7 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1164507-18:
(9*1)+(8*1)+(7*6)+(6*4)+(5*5)+(4*0)+(3*7)+(2*1)+(1*8)=139
139 % 10 = 9
So 1164507-18-9 is a valid CAS Registry Number.