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56644-75-8

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56644-75-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56644-75-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,6,4 and 4 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 56644-75:
(7*5)+(6*6)+(5*6)+(4*4)+(3*4)+(2*7)+(1*5)=148
148 % 10 = 8
So 56644-75-8 is a valid CAS Registry Number.

56644-75-8Relevant articles and documents

Prednisolone succinate-glucosamine conjugate: Synthesis, characterization and in vitro cellular uptake by kidney cell lines

Lin, Yan,Sun, Xun,Gong, Tao,Zhang, Zhi Rong

, p. 25 - 28 (2012)

Prednisolone succinate-glucosamine (PSG) conjugate, a prodrug for prednisolone, was synthesized and confirmed by NMR and MS spectrum. The stabilities of the prodrug in PBS (pH 2.50, 5.00, 7.20, and 7.89) were studied. Cytotoxicity and uptake assay of the prodrug were perfomed on HK-2 and MDCK cell lines. The results showed that compared with prednisolone, the PSG not only did not increase the cytotoxicity but also improved the uptake to 2.2 times of prednisolone by the cells. Thus, it indicated that glucosamine might be a potential carrier for kidney-targeting delivery of prednisolone.

PROTECTED TETRASACCHARIDES, THEIR PROCESS OF PREPARATION AND THEIR USE AS TRANSGLUCOSYLASE ACCEPTOR SUBSTRATES IN THE CHEMO-ENZYMATIC SYNTHESIS OF SHIGELLA FLEXNERI SPECIFIC OLIGOSACCHARIDES

-

Page/Page column 38, (2019/01/21)

The present invention provides protected tetrasaccharides, their process of preparation and their use in the synthesis of oligosaccharides, in particular fragments of O-antigens from Shigella flexneri, for example of serotype la, lb, 2a, 2b, 3a, X, 4a, 4b

Total Synthesis of a Densely Functionalized Plesiomonas shigelloides Serotype 51 Aminoglycoside Trisaccharide Antigen

Qin, Chunjun,Schumann, Benjamin,Zou, Xiaopeng,Pereira, Claney L.,Tian, Guangzong,Hu, Jing,Seeberger, Peter H.,Yin, Jian

supporting information, p. 3120 - 3127 (2018/03/08)

Plesiomonas shigelloides, a pathogen responsible for frequent outbreaks of severe travelers' diarrhea, causes grave extraintestinal infections. Sepsis and meningitis due to P. shigelloides are associated with a high mortality rate as antibiotic resistance increases and vaccines are not available. Carbohydrate antigens expressed by pathogens are often structurally unique and are targets for developing vaccines and diagnostics. Here, we report a total synthesis of the highly functionalized trisaccharide repeating unit 2 from P. shigelloides serotype 51 from three monosaccharides. A judicious choice of building blocks and reaction conditions allowed for the four amino groups adorning the sugar rings to be installed with two N-acetyl (Ac) groups, rare acetamidino (Am), and d-3-hydroxybutyryl (Hb) groups. The strategy for the differentiation of amino groups in trisaccharide 2 will serve well for the syntheses of other complex glycans.

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