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4-methoxyphenyl 2-O-benzyl-3,4-O-isopropylidene-α-L-fucopyranosyl-(1->2)-[3-O-acetyl-4,6-O-benzylidene-2-deoxy-2-(2,2,2-trichloroethoxycarbonylamino)-β-D-galactopyranosyl-(1->6)]-3,4-O-isopropylidene-β-D-galactopyranoside is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

1256157-19-3

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1256157-19-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1256157-19-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,6,1,5 and 7 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1256157-19:
(9*1)+(8*2)+(7*5)+(6*6)+(5*1)+(4*5)+(3*7)+(2*1)+(1*9)=153
153 % 10 = 3
So 1256157-19-3 is a valid CAS Registry Number.

1256157-19-3Relevant academic research and scientific papers

Synthesis of the pentasaccharide repeating unit of Escherichia coli O128 antigen

Lv, Xun,Cheng, Shuihong,Wei, Guoha,Du, Yuguo

scheme or table, p. 2272 - 2276 (2010/12/19)

A pentasaccharide, 4-methoxyphenyl 2-acetamido-2-deoxy-β-d- galactopyranosyl-(1→4)-α-d-galactopyranosyl-(1→3) -2-acetamido-2-deoxy-β-d-galactopyranosyl-(1→6)-[α-l- fucopyranosyl-(1→2)]-β-d-galactopyranoside (1), representing the repeating unit of Escherichia coli O128 antigen, was successfully prepared in 23% overall yield via a convergent '2+3' glycosylation strategy.

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