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29868-42-6

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29868-42-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 29868-42-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,8,6 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 29868-42:
(7*2)+(6*9)+(5*8)+(4*6)+(3*8)+(2*4)+(1*2)=166
166 % 10 = 6
So 29868-42-6 is a valid CAS Registry Number.

29868-42-6 Well-known Company Product Price

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  • Aldrich

  • (747963)  Methyl 2,3-di-O-acetyl-α-D-glucopyranoside  95%

  • 29868-42-6

  • 747963-1G

  • 2,432.43CNY

  • Detail
  • Aldrich

  • (747963)  Methyl 2,3-di-O-acetyl-α-D-glucopyranoside  95%

  • 29868-42-6

  • 747963-5G

  • 6,898.32CNY

  • Detail

29868-42-6Relevant articles and documents

Highly Regioselective Monoacylation of Unprotected Glucopyranoside Using Transient Directing-Protecting Groups

Rocheleau, Sylvain,Pottel, Joshua,Huski?, Igor,Moitessier, Nicolas

, p. 646 - 656 (2017/02/05)

The regioselective functionalization of monosaccharides is notoriously achieved using metal catalysis, lengthy synthetic strategies requiring protection/deprotection, various enzymes, or other methods that target cis-diols (and thus cannot be used with glucopyranose derivatives), In this paper, we report a new method using selected boronic acids as temporary protecting groups, and describe its application to the regioselective functionalization of methyl α-d-glucopyranoside, the most difficult monosaccharide to functionalize regioselectively. Generally, reactions of glucopyranosides may lead to a plethora of mono- and polyfunctionalized derivatives, yet our method gave the 3-O-acetylated, 2-O-benzoylated, and 2-O-pivaloylated derivatives of methyl α-d-glucopyranoside as major products. We focused on the use of recyclable and green temporary protecting groups (in a one-pot reaction) and on the modulation of the intramolecular hydrogen-bonding network using selected arylboronic acids. A complete scalable procedure leading to a single regioisomer from unprotected methyl α-d-glucopyranoside is presented.

Facile chelation-controlled reductive opening of methoxybenzylidene acetals with Bu3SnH and MgBr2. Regioselective protection strategy as MPM ethers

Zheng,Yamauchi,Dei,Kusaka,Matsui,Yonemitsu

, p. 6441 - 6445 (2007/10/03)

A mild and efficient regioselective reductive opening of methoxybenzylidene acetals using a combination of Bu3SnH and MgBr2·OEt2, mainly via five-membered chelation intermediates is described. This reaction was applied to synthetic intermediates of myriaporon and tedanolide. (C) 2000 Elsevier Science Ltd.

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