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[ CAS No. 20347-71-1 ] {[proInfo.proName]}

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Chemical Structure| 20347-71-1
Chemical Structure| 20347-71-1
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Product Details of [ 20347-71-1 ]

CAS No. :20347-71-1 MDL No. :MFCD01662851
Formula : C30H26O13 Boiling Point : -
Linear Structure Formula :- InChI Key :HGVVOUNEGQIPMS-UHFFFAOYSA-N
M.W : 594.52 Pubchem ID :107876
Synonyms :
Procyanidin;condensed tannins

Safety of [ 20347-71-1 ]

Signal Word:Warning Class:N/A
Precautionary Statements:P261-P305+P351+P338 UN#:N/A
Hazard Statements:H302-H315-H319-H335 Packing Group:N/A
GHS Pictogram:

Application In Synthesis of [ 20347-71-1 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 20347-71-1 ]

[ 20347-71-1 ] Synthesis Path-Downstream   1~1

YieldReaction ConditionsOperation in experiment
REFERENCE EXAMPLE 3: Method for purifying procyanidin B-2 (epicatechin-(4beta?8)-epicatechin) from an apple juice An apple juice (21,120 kg) was passed through a column (diameter: 60 cm, length: 88.5 cm, 250 l in volume) packed with Diaion HP-20 Resin (manufactured by Mitsubishi Chemical Industries, Ltd.) which had been equilibrated with water. Then, the column was washed with 1,000 l of a desalted water and 500 l of a 15% (V/V) aqueous methanol solution. Subsequently, the aimed product was eluted with 500 l of a 45% (V/V) aqueous methanol solution. The elude was solidified by drying and thus 9,450 g of a dry solid matter was obtained. This dry solid matter (1,465 g) was dissolved in a 25% (V/V) aqueous methanol solution and the solution was passed through a column (diameter: 18 cm, length: 39.3 cm, 10 l in volume) packed with Sephadex LH-20 (manufactured by Pharmacia) which had been equilibrated with a 25% (V/V) aqueous methanol solution. Next, the column was washed successively with 20 l of a 25% (V/V) aqueous methanol solution and 20 l of a 50% (V/V) aqueous methanol solution and then the aimed product was eluted with 20 l of a 75% (V/V) aqueous methanol solution. The elude was solidified by drying to give 233 g of a dry solid matter. This dry solid matter (116 g) was dissolved in a desalted water and separated by preparative high-performance liquid chromatography (150 mmPhi x 1000 mm: ODS column, methanol/a 0.0001% aqueous acetic acid solution = 12/88). Thus, 16.5 g of procyanidin B-2 (purity: 94% or more) was obtained. The 1H-NMR and 13C-NMR spectra and mass spectrum of the procyanidin B-2 thus obtained agreed with the spectra of a specimen. The purity of procyanidin B-2 was analyzed by HPLC under the same conditions as in Test Example 2.
Reference Example 3 Method for Purifying Procyanidin B-2 (epicatechin-(4beta?8)-epicatechin) from an Apple Juice An apple juice (21,120 kg) was passed through a column (diameter: 60 cm, length: 88.5 cm, 250 1 in volume) packed with Diaion HP-20 Resin (manufactured by Mitsubishi Chemical Industries, Ltd.) which had been equilibrated with water. Then, the column was washed with 1,000 1 of a desalted water and 500 1 of a 15% (V/V) aqueous methanol solution. Subsequently, the aimed product was eluted with 500 1 of a 45% (V/V) aqueous methanol solution. The elude was solidified by drying and thus 9,450 g of a dry solid matter was obtained. This dry solid matter (1,465 g) was dissolved in a 25% (V/V) aqueous methanol solution and the solution was passed through a column (diameter: 18 cm, length: 39.3 cm, 10 1 in volume) packed with Sephadex LH-20 (manufactured by Pharmacia) which had been equilibrated with a 25% (V/V) aqueous methanol solution. Next, the column was washed successively with 20 1 of a 25% (V/V) aqueous methanol solution and 20 1 of a 50% (V/V) aqueous methanol solution and then the aimed product was eluted with 20 1 of a 75% (V/V) aqueous methanol solution. The elude was solidified by drying to give 233 g of a dry solid matter. This dry solid matter (116 g) was dissolved in a desalted water and separated by preparative high-performance liquid chromatography (150 mmPhi*1000 mm: ODS column, methanol/a 0.0001% aqueous acetic acid solution =12/88). Thus, 16.5 g of procyanidin B-2 (purity: 94% or more) was obtained. The 1H-NMR and 13C-NMR spectra and mass spectrum of the procyanidin B-2 thus obtained agreed with the spectra of a specimen. The purity of procyanidin B-2 was analyzed by HPLC under the same conditions as in Test Example 2.
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