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1392224-71-3

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1392224-71-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1392224-71-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,9,2,2,2 and 4 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1392224-71:
(9*1)+(8*3)+(7*9)+(6*2)+(5*2)+(4*2)+(3*4)+(2*7)+(1*1)=153
153 % 10 = 3
So 1392224-71-3 is a valid CAS Registry Number.

1392224-71-3Relevant articles and documents

Chemical synthesis and immunological evaluation of the inner core oligosaccharide of francisella tularensis

Boltje, Thomas J.,Zhong, Wei,Park, Jin,Wolfert, Margreet A.,Chen, Wangxue,Boons, Geert-Jan

, p. 14255 - 14262 (2012/10/30)

Francisella tularensis, which is a Gram negative bacterium that causes tularemia, has been classified by the Center for Disease Control and Prevention (CDC) as a category A bioweapon. The development of vaccines, immunotherapeutics, and diagnostics for F. tularensis requires a detailed knowledge of the saccharide structures that can be recognized by protective antibodies. We have synthesized the inner core region of the lipopolysaccharide (LPS) of F. tularensis to probe antigenic responses elicited by a live and subunit vaccine. The successful preparation of the target compound relied on the use of a disaccharide which was modified by the orthogonal protecting groups diethylisopropylsilyl (DEIPS), 2-naphthylmethyl (Nap), allyl ether (All), and levulinoyl (Lev) ester. The ability to remove the protecting groups in different orders made it possible to establish the optimal glycosylations sequence to prepare a highly crowded 1,2,3-cis configured branching point. A variety of different methods were exploited to control anomeric selectivities of the glycosylations. A comparison of the 1H NMR spectra of isolated material and the synthetic derivative confirmed the reported structural assignment of the inner core oligosaccharide of F. tularensis. The observation that immunizations with LPS lead to antibody responses to the inner core saccharides provides an impetus to further explore this compound as a vaccine candidate.

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