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α-D-Galacturonic acid

$64

  • Brand : BIOFRON

  • Catalogue Number : BN-O1260

  • Specification : 98%(HPLC)

  • CAS number : 6294-16-2

  • Formula : C6H10O7

  • Molecular Weight : 194.14

  • PUBCHEM ID : 445929

  • Volume : 20mg

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Catalogue Number

BN-O1260

Analysis Method

Specification

98%(HPLC)

Storage

2-8°C

Molecular Weight

194.14

Appearance

Botanical Source

Structure Type

Category

SMILES

C1(C(C(OC(C1O)O)C(=O)O)O)O

Synonyms

D-Glucuronic acid/D-GLCA/Glycuronic acid/D-glucopyranuronic acid

IUPAC Name

(2S,3R,4S,5R,6S)-3,4,5,6-tetrahydroxyoxane-2-carboxylic acid

Density

Solubility

Flash Point

Boiling Point

Melting Point

InChl

InChl Key

AEMOLEFTQBMNLQ-BKBMJHBISA-N

WGK Germany

RID/ADR

HS Code Reference

Personal Projective Equipment

Correct Usage

For Reference Standard and R&D, Not for Human Use Directly.

Meta Tag

provides coniferyl ferulate(CAS#:6294-16-2) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of coniferyl ferulate are included as well.>> amp version: coniferyl ferulate

No Technical Documents Available For This Product.

PMID

9808293

Abstract

The molecular motions of D-alpha-galacturonic acid monohydrate (GA) and its derivative methyl-alpha-D-galacturonic acid methyl ester monohydrate (MGAM) in the solid state have been studied using 1H NMR. Both protonated and deuterium exchanged samples have been used. Spin-lattice relaxation times in the laboratory and rotating frames as well as second moments have been measured over the temperature range 90-370 K. Analysis of results has shown that in GA spin-lattice relaxation is chiefly by hydroxyl groups and water of crystallization. In MGAM, methyl groups dominate spin-lattice relaxation in the laboratory frame at the low temperature. Hydroxyl groups and water of crystallization contribute to the spin-lattice relaxation in the laboratory frame in the high temperature region. In the rotating frame motion of hydroxyl groups and water of crystallization provide the main relaxation pathway. Changes in the static second moment with temperature can be reasonably well predicted using values of correlation time and motionally averaged second moments obtained by fitting the spin-lattice relaxation data. 13C CPMAS spectra for GA and MGAM are also described.

Title

Molecular motions of D-alpha-galacturonic acid (GA) and methyl-D-alpha-galacturonic acid methyl ester (MGAM) in the solid state-A proton NMR study.

Author

Tang HR1, Belton PS.

Publish date

1998 Aug


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