Welcome to LookChem.com Sign In|Join Free

CAS

  • or

71769-38-5

Post Buying Request

71769-38-5 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

71769-38-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71769-38-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,7,6 and 9 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 71769-38:
(7*7)+(6*1)+(5*7)+(4*6)+(3*9)+(2*3)+(1*8)=155
155 % 10 = 5
So 71769-38-5 is a valid CAS Registry Number.

71769-38-5Relevant articles and documents

Phosphite-thioether/selenoether Ligands from Carbohydrates: An Easily Accessible Ligand Library for the Asymmetric Hydrogenation of Functionalized and Unfunctionalized Olefins

Margalef, Jèssica,Borràs, Carlota,Alegre, Sabina,Alberico, Elisabetta,Pàmies, Oscar,Diéguez, Montserrat

, p. 2142 - 2168 (2019/04/13)

A large family of phosphite-thioether/selenoether ligands has been easily prepared from accessible L-(+)-tartaric acid and D-(+)-mannitol and applied in the M-catalyzed (M=Ir, Rh) asymmetric hydrogenation of a broad number of substrates (46 in total). Its highly modular architecture has been crucial to maximize the catalytic performance. Improving most of the reported approaches, this ligand family presents a broad substrate scope. By selecting the ligand parameters high enantioselectivities (ee's up to 99 %) have therefore been achieved in a broad range of both, functionalized and unfunctionalized substrates. Interestingly, both enantiomers of the hydrogenation products can be usually achieved by changing the ligand parameters.

Absolute configuration of falcarinol, a potent antitumor agent commonly occurring in plants

Zheng, Guangrong,Lu, Wei,Aisa, Haji A.,Cai, Junchao

, p. 2181 - 2182 (2007/10/03)

The absolute configuration of falcarinol (1) was established by stereoselective total synthesis of the two enantiomers.

Hydrolysis of (2-deoxy-β-D-glucopyranosyl)pyridinium salts

Huang, Xicai,Surry, Clint,Hiebert, Timothy,Bennet, Andrew J.

, p. 10614 - 10621 (2007/10/03)

The hydrolysis reactions of three (2-deoxy-β-D-glucopyranosyl)pyridinium salts exhibit first-order rate constants that are independent of pH in the range of 4.4-10.1 pH units. Derived second-order rate constants for the hydrolysis reactions of (2-deoxy-β-D-glucopyranosyl)-4′-bromoisoquinolinium bromide (5b) conducted in the presence of nucleophilic monoanions (μ = 2.0) including AcO-, Cl-, Br-, and N3 exhibit a Swain-Scott parameter (s) of 0,03 ± 0.05, indicating that these reactions show no sensitivity to the nature of the anion. However, a substantial quantity of the (2-deoxyglucopyranosyl)pyridinium salt hydrolysis product is formed as a result of a post-rate-limiting reaction involving a nucleophilic anion. Analysis of the product ratios indicates that the first-formed intermediate in the hydrolytic reaction is a solvent-separated ion painmolecule encounter complex. The data allow a calculated estimate of greater than 2.5 × 10-12 s for the lifetime of the glucopyranosyloxocarbenium ion in aqueous solution.

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 71769-38-5