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CAS No. : | 505-56-6 | MDL No. : | MFCD00002806 |
Formula : | C22H42O4 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | DGXRZJSPDXZJFG-UHFFFAOYSA-N |
M.W : | 370.57 | Pubchem ID : | 244872 |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
* 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.
Yield | Reaction Conditions | Operation in experiment |
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Air-dried bark was cut in strips, granulated and ground to give a powder having particles of 20 mesh, followed by extraction of said powder for 24 hours with aceton in a Soxhlet apparatus. The remaining solid material was filtered and dried. The solid material (100 g) was refluxed in basic 2-propanol (22 g/0.55 mol NaOH in 1 liter of alcohol) for 1 hour. The solid material was filtered from the solution while still hot. The solution was still refluxed for 15 min. The solution was kept in a freezer at least 24 hours. The precipitate was filtered and dried. The product containing sodium salts of carboxylic acids of suberin was a yellowish powder. EPO <DP n="19"/>Example 2Preparation of suberin acidsThe hydrolysis product of suberin (6 g) obtained in Example 1 was dissolved in water (750 ml) in a bath at about 100 C, followed by cooling the solution. 0.25 M sulphuric acid was added to the solution to adjust the pH of the solution between 2 and 3. The mixture was extracted with diethyl ether (400 + 200 + 200 ml) and dried with sodium sulphate. The solvent was removed by means of a rotary evaporator, followed by drying of the product in vacuum at room temperature. The product contained fatty acids of suberin, the yield thereof being between 84 and 90 %. The product was a yellowish powder.1H NMR (ppm): 1.0-1.6(m) CH2; 2.0 CH2; 2.2(t) CH2CO2; 2.8 CH(O)CH; 3.2 CH(OH)CH(OH); 3.4(t) CH2OH; 3.8 CH(OH); 4.0, 4.2 OH; 5.3 CH=CH; 11.8 OH 13C NMR (ppm): 24-28(5s) CH2; 29(m), 32 CH2; 34 CH2COOH; 37 CH2CH(OH); 56 CH(O)CH; 61 CH2OH; 70 CH(OH); 73 CH(OH)CH(OH); 130 CH=CH; 174 COOHContents of Fatty acid content of suberin is shown in Table 4, by NMR analysis.Table 4. Fatty acids of suberin |