443-09-4 Usage
Preparation
Preparation by Fries rearrangement of p-fluorophenyl propionate (b.p.18–20 118–120°) with aluminium chloride at 150° for 1 h (80–81%) or at reflux for 30 min (57%) Also obtained by demethylation of 5-fluoro-2-methoxy-propiophenone (b.p.13 132°) with refluxing pyridinium chloride for 15 min (76%).
Check Digit Verification of cas no
The CAS Registry Mumber 443-09-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,4 and 3 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 443-09:
(5*4)+(4*4)+(3*3)+(2*0)+(1*9)=54
54 % 10 = 4
So 443-09-4 is a valid CAS Registry Number.
InChI:InChI=1/C9H9FO2/c1-2-8(11)7-5-6(10)3-4-9(7)12/h3-5,12H,2H2,1H3
443-09-4Relevant articles and documents
ANTI-INFECTIVE AGENTS
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Page/Page column 168, (2018/04/12)
The present invention relates to a novel class of chromene-2-carboxamide compounds inhibitors of general formula (I) wherein R1, R2, R3, R4, R5, R6, R7, R8 and X are as defined herein, to their use in medicine, and their use as anti-infective agents in particular, to compositions containing them, to processes for their preparation and to intermediates used in such processes.