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81520-72-1

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81520-72-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81520-72-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,2 and 0 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81520-72:
(7*8)+(6*1)+(5*5)+(4*2)+(3*0)+(2*7)+(1*2)=111
111 % 10 = 1
So 81520-72-1 is a valid CAS Registry Number.

81520-72-1Relevant articles and documents

Glycosidase-catalysed Oligosaccharide Synthesis: Preparation of the N-Acetylchitooligosaccharides Penta-N-acetylchitopentaose and Hexa-N-acetylchitohexaose using the β-N-Acetylhexosaminidase of Aspergillus oryzae.

Singh, Suddham,Gallagher, Richard,Derrick, Peter J.,Crout, David H.G.

, p. 2803 - 2810 (1995)

Using a crude β-N-acetylhexosaminidase from Aspergillus oryzae both tri-N-acetylchitotriose (GlcNAc)3 (1,n=1) and tetra-N-acetylchitotetraose (GlcNAc4) (1,n=2) act respectively as both glycosyl donor and glycosyl acceptor to give product mixtures containing significant quantities of the corresponding penta- and hexasaccharides which are readily isolated and purified by charcoal-Celite chromatography.

Ring-opening glycosylation of a chitobiose oxazoline catalyzed by a non-chitinolytic mutant of chitinase

Sakamoto, Junji,Watanabe, Takeshi,Ariga, Yumiko,Kobayashi, Shiro

, p. 1180 - 1181 (2007/10/03)

Ring-opening glycosylation of a chitobiose oxazoline was exclusively achieved by catalysis of a mutated chitinase that is only active for the glycosylation and not for chitinolysis.

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