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208523-33-5

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208523-33-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 208523-33-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,8,5,2 and 3 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 208523-33:
(8*2)+(7*0)+(6*8)+(5*5)+(4*2)+(3*3)+(2*3)+(1*3)=115
115 % 10 = 5
So 208523-33-5 is a valid CAS Registry Number.

208523-33-5Downstream Products

208523-33-5Relevant articles and documents

Zinc p-tert-butylbenzoate catalyzed glycosylation with glycopyranosyl chloride

Nishizawa,Garcia,Shin,Yamada

, p. 784 - 785 (1993)

A 0.1 eq of zinc p-tert-butylbenzoate significantly accelerates glycosylation of alcohol with glycopyranosyl chloride in the presence of 2-methyl-2-butene to give β-glycoside in high yield with fair to good β-selectivity.

Gold(III)-Catalyzed Glycosylation using Phenylpropiolate Glycosides: Phenylpropiolic Acid, An Easily Separable and Reusable Leaving Group

Shaw, Mukta,Thakur, Rima,Kumar, Amit

, p. 589 - 605 (2019/01/14)

An efficient and operationally simple gold(III)-catalyzed glycosylation protocol was developed using newly synthesized benchtop stable phenylpropiolate glycosyl (PPG) donors. Gold(III)-catalyzed activation of PPGs proceeds well with various carbohydrate a

ortho-(Methyltosylaminoethynyl)benzyl glycosides as new glycosyl donors for latent-active glycosylation

Chen, Xiaoping,Shen, Dacheng,Wang, Qiaoling,Yang, You,Yu, Biao

, p. 13957 - 13960 (2015/09/07)

A new glycosylation protocol employing ortho-(methyltosylaminoethynyl)benzyl glycosides as glycosyl donors and TMSOTf as the catalyst is disclosed. These donors can be readily prepared from the corresponding 'latent' ortho-iodobenzyl glycosides via a Sonogashira coupling, thus providing a new approach for the 'latent-active' synthesis of glycans.

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