1240604-54-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1240604-54-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,0,6,0 and 4 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1240604-54:
(9*1)+(8*2)+(7*4)+(6*0)+(5*6)+(4*0)+(3*4)+(2*5)+(1*4)=109
109 % 10 = 9
So 1240604-54-9 is a valid CAS Registry Number.