1340547-54-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1340547-54-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,4,0,5,4 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1340547-54:
(9*1)+(8*3)+(7*4)+(6*0)+(5*5)+(4*4)+(3*7)+(2*5)+(1*4)=137
137 % 10 = 7
So 1340547-54-7 is a valid CAS Registry Number.