173040-47-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 173040-47-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,0,4 and 0 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 173040-47:
(8*1)+(7*7)+(6*3)+(5*0)+(4*4)+(3*0)+(2*4)+(1*7)=106
106 % 10 = 6
So 173040-47-6 is a valid CAS Registry Number.
173040-47-6Relevant articles and documents
Synthesis of a novel fluoro-tribactam utilising an N-fluorosulfonimide in the key step
Padova,Roberts,Donati,Marchioro,Perboni
, p. 263 - 270 (2007/10/02)
The electrophilic reagent N-fluorobenzenesulfonimide (NFSI) was used in the synthesis of the α-fluoro ketone 7, a key intermediate for the synthesis of the β-lactam 13. This highly reactive fluorinated tribactam 13 was rapidly hydrolysed in aqueous soluti