1164534-31-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1164534-31-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,6,4,5,3 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1164534-31:
(9*1)+(8*1)+(7*6)+(6*4)+(5*5)+(4*3)+(3*4)+(2*3)+(1*1)=139
139 % 10 = 9
So 1164534-31-9 is a valid CAS Registry Number.