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104758-89-6

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104758-89-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 104758-89-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,7,5 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 104758-89:
(8*1)+(7*0)+(6*4)+(5*7)+(4*5)+(3*8)+(2*8)+(1*9)=136
136 % 10 = 6
So 104758-89-6 is a valid CAS Registry Number.

104758-89-6Relevant articles and documents

SELECTIVE LIPASE-CATALYZED ACYLATION OF 4,6-O-BENZYLIDENE-D-GLUCOPYRANOSIDES TO SYNTHETICALLY USEFUL ESTERS

Panza, Luigi,Brasca, Sara,Riva, Sergio,Russo, Giovanni

, p. 931 - 932 (1993)

Simple and regioselective lipase-catalyzed acylation of compounds 1 and 4 with synthetically useful esters such as benzoates, chloroacetates, pivaloates and levulinates is described.

Wittig Reaction: Domino Olefination and Stereoselectivity DFT Study. Synthesis of the Miharamycins' Bicyclic Sugar Moiety

Cachatra, Vasco,Almeida, Andreia,Sardinha, Jo?o,Lucas, Susana D.,Gomes, Ana,Vaz, Pedro D.,Florêncio, M. Helena,Nunes, Rafael,Vila-Vi?osa, Diogo,Calhorda, Maria José,Rauter, Amélia P.

, p. 5622 - 5625 (2015/12/01)

2-O-Acyl protected-d-ribo-3-uloses reacted with [(ethoxycarbonyl)methylene]triphenylphosphorane in acetonitrile to afford regio- and stereoselectively 2-(Z)-alkenes in 10-60 min under microwave irradiation. This domino reaction is proposed to proceed via tautomerization of 3-ulose to enol, acyl migration, tautomerization to the 3-O-acyl-2-ulose, and Wittig reaction. Alternatively, in chloroform, regioselective 3-olefination of 2-O-pivaloyl-3-uloses gave (E)-alkenes, key precursors for the miharamycins' bicyclic sugar moiety.

Regioselective Acylation of Hexopyranosides with Pivaloyl Chloride

Jiang, Lu,Chan, Tak-Hang

, p. 6035 - 6038 (2007/10/03)

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