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77790-33-1

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77790-33-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77790-33-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,7,9 and 0 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 77790-33:
(7*7)+(6*7)+(5*7)+(4*9)+(3*0)+(2*3)+(1*3)=171
171 % 10 = 1
So 77790-33-1 is a valid CAS Registry Number.

77790-33-1Downstream Products

77790-33-1Relevant articles and documents

Completely β-selective glycosylation using 3,6- O-(o-xylylene)-bridged axial-rich glucosyl fluoride

Okada, Yasunori,Asakura, Noriaki,Bando, Masafumi,Ashikaga, Yoshiki,Yamada, Hidetoshi

, p. 6940 - 6943 (2012/06/15)

A completely β-selective glycosylation that does not rely on neighboring group participation is described. The novelty of this work is the design of the glycosyl donor locked into the axial-rich form by the o-xylylene bridge between the 3-O and 6-O of d-glucopyranose. The synthesized 2,4-di-O-benzyl-3,6-O-(o-xylyene)glucopyranosyl fluoride could efficiently react with various alcohols in a SnCl2-AgB(C6F 5)4 catalytic system. The mechanism composed of the glycosylation and isomerization cycles was revealed through comparative experiments using acidic and basic molecular sieves. The achieved perfect stereocontrol is attributed to the synergy of the axial-rich conformation and convergent isomerization caused by HB(C6F5)4 generated in situ.

How the arming participating moieties can broaden the scope of chemoselective oligosaccharide synthesis by allowing the inverse armed-disarmed approach

Smoot, James T.,Demchenko, Alexei V.

experimental part, p. 8838 - 8850 (2009/04/05)

(Chemical Equation Presented) A new method for stereocontrolled glycosylation and chemoselective oligosaccharide synthesis has been developed. It has been determined that complete 1,2-trans selectivity can be achieved with the use of a 2-O-picolyl moiety,

Development of an arming participating group for stereoselective glycosylation and chemoselective oligosaccharide synthesis

Smoot, James T.,Pornsuriyasak, Papapida,Demchenko, Alexei V.

, p. 7123 - 7126 (2007/10/03)

(Chemical Equation Presented) Armed and dangerous: A new armed-disarmed glycosylation strategy (see picture) allows chemoselective introduction of a 1,2-trans glycosidic linkage prior to other linkages through the use of a 2-O-picolyl moiety. This neighbo

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