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1228755-40-5

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1228755-40-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1228755-40-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,8,7,5 and 5 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1228755-40:
(9*1)+(8*2)+(7*2)+(6*8)+(5*7)+(4*5)+(3*5)+(2*4)+(1*0)=165
165 % 10 = 5
So 1228755-40-5 is a valid CAS Registry Number.

1228755-40-5Relevant articles and documents

Regiospecific anomerisation of acylated glycosyl azides and benzoylated disaccharides by using TiCl4

Farrell, Mark,Zhou, Jian,Murphy, Paul V.

, p. 14836 - 14851 (2013)

Chelation induced anomerisation is promoted when Lewis acids, such as TiCl4 or SnCl4, coordinate to the pyranose ring oxygen atom and another site, giving rise to endocyclic cleavage and isomerisation to the more stable anomer. In this research regiospecific site-directed anomerisation is demonstrated. TiCl4 (2.5equiv) was employed to induce anomerisation of 15 glycosyl azide and disaccharide substrates of low reactivity, and high yields (>75 %) and stereoselectivies (α/β>9:1) were achieved. The examples included glucopyranuronate, galactopyranuronate and mannopyranuronate as well as N-acetylated glucopyranuronate and galactopyranuronate derivatives. A disaccharide with the α1→4 linkage found in polygalacturonan was included. The use of benzoylated saccharides was found to be important in disaccharide anomerisation as attempts to isomerise related acetyl protected and 2,3-carbonate protected derivatives were not successful. Copyright

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