| Record Information |
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| Version | 5.0 |
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| Status | Expected but not Quantified |
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| Creation Date | 2021-09-22 20:59:25 UTC |
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| Update Date | 2021-09-22 20:59:27 UTC |
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| HMDB ID | HMDB0301774 |
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| Secondary Accession Numbers | None |
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| Metabolite Identification |
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| Common Name | Xylan |
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| Description | Xylan is a group of hemicelluloses, representing the third most abundant biopolymer on Earth. It is found in plants, in the secondary cell walls of dicotyledonous plants and in all cell walls of grasses (monocotyledonous). Xylans are polysaccharides made up of β-1,4-linked xylose (a pentose sugar) residues with side branches of α-arabinofuranose and α-glucuronic acids and contribute to cross-linking of cellulose microfibrils and lignin through ferulic acid residues. On the basis of the substituting groups, xylan can be categorized into three classes i) glucuronoxylan (GX) ii) neutral arabinoxylan (AX) and iii) glucuronoarabinoxylan (GAX). The quality of cereal flours and the hardness of dough are largely affected by the amount of xylan. Xylan is one of the foremost anti-nutritional factors in commonly used feedstuff raw materials. It is a major component of plant secondary cell walls which is a major source of renewable energy especially for second generation biofuels. However, since microorganisms like yeast cannot ferment pentoses naturally, xylose (the pentose backbone of xylan) results hard to ferment in biofuel production, reducing its use in renewable energy production (PMID: 18299887 , PMID: 31077637 ). |
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| Structure | [H][C@]1(O)O[C@@]([H])(O)[C@]([H])(O)C([H])(O)[C@]1([H])O InChI=1S/C5H10O6/c6-1-2(7)4(9)11-5(10)3(1)8/h1-10H/t1?,2-,3+,4-,5+ |
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| Synonyms | Not Available |
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| Chemical Formula | C5H10O6 |
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| Average Molecular Weight | 166.129 |
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| Monoisotopic Molecular Weight | 166.047738042 |
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| IUPAC Name | (2R,3R,5S,6S)-oxane-2,3,4,5,6-pentol |
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| Traditional Name | (2R,3R,5S,6S)-oxane-2,3,4,5,6-pentol |
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| CAS Registry Number | 9014-63-5 |
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| SMILES | [H][C@]1(O)O[C@@]([H])(O)[C@]([H])(O)C([H])(O)[C@]1([H])O |
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| InChI Identifier | InChI=1S/C5H10O6/c6-1-2(7)4(9)11-5(10)3(1)8/h1-10H/t1?,2-,3+,4-,5+ |
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| InChI Key | HEHIOFQJTRFOKM-ASQQECOQSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as monosaccharides. Monosaccharides are compounds containing one carbohydrate unit not glycosidically linked to another such unit, and no set of two or more glycosidically linked carbohydrate units. Monosaccharides have the general formula CnH2nOn. |
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| Kingdom | Organic compounds |
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| Super Class | Organic oxygen compounds |
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| Class | Organooxygen compounds |
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| Sub Class | Carbohydrates and carbohydrate conjugates |
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| Direct Parent | Monosaccharides |
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| Alternative Parents | |
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| Substituents | - Oxane
- Monosaccharide
- Secondary alcohol
- Hemiacetal
- Oxacycle
- Organoheterocyclic compound
- Polyol
- Hydrocarbon derivative
- Alcohol
- Aliphatic heteromonocyclic compound
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| Molecular Framework | Aliphatic heteromonocyclic compounds |
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| External Descriptors | Not Available |
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| Ontology |
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| Physiological effect | Not Available |
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| Disposition | |
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| Process | Not Available |
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| Role | Not Available |
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| Physical Properties |
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| State | Not Available |
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| Experimental Molecular Properties | | Property | Value | Reference |
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| Melting Point | Not Available | Not Available | | Boiling Point | Not Available | Not Available | | Water Solubility | Not Available | Not Available | | LogP | Not Available | Not Available |
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| Experimental Chromatographic Properties | Not Available |
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| Predicted Molecular Properties | |
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| Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Retention Times Underivatized| Chromatographic Method | Retention Time | Reference |
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| Predicted by Siyang on May 30, 2022 | 9.4586 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 3.95 minutes | 32390414 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 828.9 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 346.1 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 33.3 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 198.2 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 80.5 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 286.3 seconds | 40023050 | | BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid | 250.1 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 599.8 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 632.4 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 49.8 seconds | 40023050 | | UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid | 924.2 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 209.4 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 229.9 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 663.1 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 312.6 seconds | 40023050 | | Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water | 312.8 seconds | 40023050 |
Predicted Kovats Retention IndicesNot Available |
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| MS/MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Xylan 10V, Positive-QTOF | splash10-014i-0900000000-db3bbca86ffbe5ccb507 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Xylan 20V, Positive-QTOF | splash10-014j-1900000000-8c7369260be1e7421579 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Xylan 40V, Positive-QTOF | splash10-052b-9200000000-5510bd4bc1e402672e4e | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Xylan 10V, Negative-QTOF | splash10-014i-3900000000-6867c897fc2ef713be70 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Xylan 20V, Negative-QTOF | splash10-016r-6900000000-9607d4adc081c6a76ffc | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Xylan 40V, Negative-QTOF | splash10-0a6u-9000000000-a714e9a7f5c662ae8cf9 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Xylan 10V, Positive-QTOF | splash10-00ls-0900000000-07b3144a15c464d1dae2 | 2021-10-21 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Xylan 20V, Positive-QTOF | splash10-02mv-9300000000-3d627eb196d3246409c6 | 2021-10-21 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Xylan 40V, Positive-QTOF | splash10-0c04-9100000000-a007f91b535660d38f12 | 2021-10-21 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Xylan 10V, Negative-QTOF | splash10-014i-4900000000-711965af16c8cc42b8e0 | 2021-10-21 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Xylan 20V, Negative-QTOF | splash10-0a4l-9000000000-d5147bb994e25710f504 | 2021-10-21 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Xylan 40V, Negative-QTOF | splash10-0a4l-9000000000-b8acd7efa0721e83a8d9 | 2021-10-21 | Wishart Lab | View Spectrum |
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| General References | - Blake AW, Marcus SE, Copeland JE, Blackburn RS, Knox JP: In situ analysis of cell wall polymers associated with phloem fibre cells in stems of hemp, Cannabis sativa L. Planta. 2008 Jun;228(1):1-13. doi: 10.1007/s00425-008-0713-5. Epub 2008 Feb 26. [PubMed:18299887 ]
- Oliveira DM, Mota TR, Salatta FV, Marchiosi R, Gomez LD, McQueen-Mason SJ, Ferrarese-Filho O, Dos Santos WD: Designing xylan for improved sustainable biofuel production. Plant Biotechnol J. 2019 Dec;17(12):2225-2227. doi: 10.1111/pbi.13150. Epub 2019 Sep 30. [PubMed:31077637 ]
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