5642-53-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5642-53-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,6,4 and 2 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 5642-53:
(6*5)+(5*6)+(4*4)+(3*2)+(2*5)+(1*3)=95
95 % 10 = 5
So 5642-53-5 is a valid CAS Registry Number.
InChI:InChI=1/C13H9BrN2O3/c14-10-4-6-11(7-5-10)15-13(17)9-2-1-3-12(8-9)16(18)19/h1-8H,(H,15,17)