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52443-07-9

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52443-07-9 Usage

General Description

2,3,4,6-Tetra-O-acetyl-beta-D-galactopyranosyl cyanide is a chemical compound that belongs to the family of cyanides and carbohydrates. It is a derivative of beta-D-galactopyranosyl cyanide and is commonly used in the synthesis of complex organic molecules. 2,3,4,6-TETRA-O-ACETYL-BETA-D-GALACTOPYRANOSYL CYANIDE is widely utilized in organic chemistry for the preparation of glycosides, which are important molecules in biological and medicinal research. Its acetyl groups provide protection for the hydroxyl groups of the sugar moiety, making it a versatile building block for the synthesis of various glycosides. Additionally, the presence of the cyanide group allows for further chemical modification and functionalization of the compound.

Check Digit Verification of cas no

The CAS Registry Mumber 52443-07-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,4,4 and 3 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 52443-07:
(7*5)+(6*2)+(5*4)+(4*4)+(3*3)+(2*0)+(1*7)=99
99 % 10 = 9
So 52443-07-9 is a valid CAS Registry Number.

52443-07-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name [(2R,3S,4R,5S,6S)-3,4,5-triacetyloxy-6-cyanooxan-2-yl]methyl acetate

1.2 Other means of identification

Product number -
Other names 2,3,4,6-Tetra-O-acetyl-b-D-galactopyranosyl cyanide

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:52443-07-9 SDS

52443-07-9Downstream Products

52443-07-9Relevant articles and documents

Improved preparations of some per-O-acetylated aldohexopyranosyl cyanides.

Myers,Lee

, p. 145 - 163 (1986)

3,4,6-Tri-O-acetyl-1,2-O-[1-(exo-, endo-cyano)ethylidene]-alpha-D- galacto- (1a/b), -alpha-D-gluco- (2a/b), and -beta-D-manno-pyranose (3a/b) were stereoselectively isomerized to the corresponding per-O-acetylated 1,2-trans-aldohexopyranosyl cyanides in 75, 16, and 62% yield, respectively, by treatment with boron trifluoride etherate in dry nitromethane. The corresponding per-O-acetylated 1,2-cis-aldohexopyranosyl cyanides were obtained concurrently in respective yields of 1.9, 0.9, and 4.8%. The per-O-acetylaldohexopyranosyl cyanide products were found stable to the reaction conditions and were readily isolated following completion of the rearrangement. It had previously been proved that reaction of 2,3,4,6-tetra-O-acetyl-alpha-D-manno- and -gluco-pyranosyl bromide with mercuric cyanide in nitromethane generates, in the ratio of approximately 1:1, the desired 1,2-trans-glycosyl cyanides and the corresponding 1,2-O-(1-cyanoethylidene) isomers (3a/b and 2a/b, respectively). Treatment of these reaction-mixtures with boron trifluoride etherate in nitromethane effected the rearrangement of 3a/b and 2a/b, thereby facilitating the isolation, and increasing the overall yields, of the per-O-acetylated 1,2-trans-D-manno- and -gluco-pyranosyl cyanides (58 and 30% total yield, respectively) relative to the earlier procedures. The boron trifluoride etherate-mediated reaction of per-O-acetyl-alpha- and -beta-D-galacto-, -alpha- and -beta-D-gluco-, -alpha-D-manno-, and -2-deoxy-2-phthalimido-beta-D-gluco-pyranoses with trimethylsilyl cyanide in nitromethane was also investigated. This reaction provides a "one-flask" synthesis of the corresponding per-O-acetylated 1,2-trans-aldohexopyranosyl cyanides in which 1,2-O-(1-cyanoethylidene) derivatives are isomerized in situ. Finally, improved preparations of the (not readily accessible) per-O-acetylated 1,2-cis-D-manno- and -gluco-pyranosyl cyanides are described. Thus, 2,3,4,6-tetra-O-acetyl-alpha- and -beta-D-mannopyranosyl cyanide (48 and 16% total yield, respectively) and -alpha- and -beta-D-glucopyranosyl cyanide (12 and 39% total yield, respectively) were synthesized by fusion of the corresponding alpha-D-glycosyl bromides with mercuric cyanide.

Substrate based PET imaging agents

-

Page/Page column 44; 45; 46; 49, (2020/11/13)

The present application is directed to radiolabeled imaging agents comprising a radiolabel, and a substrate, pharmaceutical compositions comprising radiolabeled imaging agents, and methods of using the radiolabeled imaging agents. The present application is further directed to methods of preparing the radiolabeled imaging agent. Such imaging agents can used in imaging studies, such as Positron Emitting Tomography (PET) or Single Photon Emission Computed Tomography (SPECT).

Solid-phase synthesis of cyclic C-glycoside/amino acid hybrids by carbamate coupling chemistry and on-support cyclization

Katajisto, Johanna,Loennberg, Harri

, p. 3518 - 3525 (2007/10/03)

A solid-supported synthesis of cyclic C-glycoside/amino acid conjugates is described. For this purpose, N-(tert-butoxycarbonyl)-[6-O-(p- nitrophenoxycarbonyl)-2,3,4-tri-O-(p-toluoyl)-β-D-glycopyranosyl] methylamines derived from galactose and glucose were

(-)-Daucic Acid: Revision of Configuration, Synthesis, and Biosynthetic Implications

Lichtenthaler, Frieder W.,Nakamura, Katsumi,Klotz, Juergen

, p. 5838 - 5843 (2007/10/03)

The synthesis of dihydropyrans with the D-xylo (1), D-ribo, L-arabino, and D-lyxo (2) configuration by one-carbon-atom homologation of D-mannose or D-galactose, terminal oxidation, and directed β elimination revealed (-)-daucic acid isolated from carrots

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