| Record Information |
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| Version | 5.0 |
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| Status | Expected but not Quantified |
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| Creation Date | 2005-11-16 15:48:42 UTC |
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| Update Date | 2023-02-21 17:15:42 UTC |
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| HMDB ID | HMDB0001443 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | Phosphite |
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| Description | The phosphite ion (PO3) is a polyatomic ion with a phosphorus central atom. Its geometry is tetrahedral. Many phosphite salts, such as ammonium phosphite, are highly water soluble. Also organophosphorus compounds with the formula P(OR)3. The conjugate acid of the phosphite anion is phosphorous acid (H3PO3). Other names for this acid are orthophosphorous acid and dihydroxyphosphine oxide. H3PO3 is also sometimes referred to as phosphorus trihydroxide and trihydroxyphosphine, though these names are misleading. Phosphorous acid is a diprotic acid, since the hydrogen bonded directly to the central phosphorus atom is not ionizable. Thus, a more logical chemical formula for phosphorous acid is HPO(OH)2, since three hydroxy groups are not actually present on the acid. The acid can be synthesized hy treatment of a carboxylic acid, alcohol, or most practically water, with phosphorus tribromide or more commonly phosphorus trichloride. |
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| Structure | InChI=1S/H3O3P/c1-4(2)3/h1-3H |
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| Synonyms | | Value | Source |
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| [p(OH)3] | ChEBI | | H3PO3 | ChEBI | | p(OH)3 | ChEBI | | Phosphorige saeure | ChEBI | | Phosphite | ChEBI | | Phosphorus trihydroxide | MeSH, HMDB | | Phosphonic acid | MeSH, HMDB | | Dihydroxyphosphine oxide | MeSH, HMDB |
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| Chemical Formula | H3O3P |
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| Average Molecular Weight | 81.995 |
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| Monoisotopic Molecular Weight | 81.981980955 |
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| IUPAC Name | phosphorous acid |
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| Traditional Name | phosphorous acid |
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| CAS Registry Number | 14901-63-4 |
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| SMILES | OP(O)O |
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| InChI Identifier | InChI=1S/H3O3P/c1-4(2)3/h1-3H |
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| InChI Key | OJMIONKXNSYLSR-UHFFFAOYSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of inorganic compounds known as non-metal phosphites. These are inorganic non-metallic compounds containing a phosphite as its largest oxoanion. |
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| Kingdom | Inorganic compounds |
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| Super Class | Homogeneous non-metal compounds |
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| Class | Non-metal oxoanionic compounds |
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| Sub Class | Non-metal phosphites |
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| Direct Parent | Non-metal phosphites |
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| Alternative Parents | Not Available |
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| Substituents | |
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| Molecular Framework | Not Available |
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| External Descriptors | |
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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 | Solid |
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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 | 9.2509 minutes | 33406817 | | AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid | 339.5 seconds | 40023050 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 549.3 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 370.3 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 105.6 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 285.5 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 150.2 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 248.2 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 | 255.1 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 726.4 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 564.8 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 49.2 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 | 624.4 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 229.1 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 346.7 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 657.6 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 391.8 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 | 375.2 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatizedDerivatized| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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| Phosphite,1TMS,isomer #1 | C[Si](C)(C)OP(O)O | 955.1 | Semi standard non polar | 33892256 | | Phosphite,1TMS,isomer #1 | C[Si](C)(C)OP(O)O | 858.7 | Standard non polar | 33892256 | | Phosphite,1TMS,isomer #1 | C[Si](C)(C)OP(O)O | 1340.4 | Standard polar | 33892256 | | Phosphite,2TMS,isomer #1 | C[Si](C)(C)OP(O)O[Si](C)(C)C | 1100.8 | Semi standard non polar | 33892256 | | Phosphite,2TMS,isomer #1 | C[Si](C)(C)OP(O)O[Si](C)(C)C | 993.4 | Standard non polar | 33892256 | | Phosphite,2TMS,isomer #1 | C[Si](C)(C)OP(O)O[Si](C)(C)C | 1117.2 | Standard polar | 33892256 | | Phosphite,3TMS,isomer #1 | C[Si](C)(C)OP(O[Si](C)(C)C)O[Si](C)(C)C | 1254.7 | Semi standard non polar | 33892256 | | Phosphite,3TMS,isomer #1 | C[Si](C)(C)OP(O[Si](C)(C)C)O[Si](C)(C)C | 1116.5 | Standard non polar | 33892256 | | Phosphite,3TMS,isomer #1 | C[Si](C)(C)OP(O[Si](C)(C)C)O[Si](C)(C)C | 958.8 | Standard polar | 33892256 | | Phosphite,1TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OP(O)O | 1240.1 | Semi standard non polar | 33892256 | | Phosphite,1TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OP(O)O | 1049.2 | Standard non polar | 33892256 | | Phosphite,1TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OP(O)O | 1478.0 | Standard polar | 33892256 | | Phosphite,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OP(O)O[Si](C)(C)C(C)(C)C | 1564.9 | Semi standard non polar | 33892256 | | Phosphite,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OP(O)O[Si](C)(C)C(C)(C)C | 1393.0 | Standard non polar | 33892256 | | Phosphite,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OP(O)O[Si](C)(C)C(C)(C)C | 1414.7 | Standard polar | 33892256 | | Phosphite,3TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OP(O[Si](C)(C)C(C)(C)C)O[Si](C)(C)C(C)(C)C | 1856.6 | Semi standard non polar | 33892256 | | Phosphite,3TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OP(O[Si](C)(C)C(C)(C)C)O[Si](C)(C)C(C)(C)C | 1751.1 | Standard non polar | 33892256 | | Phosphite,3TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OP(O[Si](C)(C)C(C)(C)C)O[Si](C)(C)C(C)(C)C | 1464.8 | Standard polar | 33892256 |
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| GC-MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Predicted GC-MS | Predicted GC-MS Spectrum - Phosphite GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum |
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 - Phosphite 10V, Positive-QTOF | splash10-001i-9000000000-d63cea791c91f32cd399 | 2016-08-02 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phosphite 20V, Positive-QTOF | splash10-001i-9000000000-10e005a1ac676bbe26fd | 2016-08-02 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phosphite 40V, Positive-QTOF | splash10-01q9-9000000000-728f07a03885884d3470 | 2016-08-02 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phosphite 10V, Negative-QTOF | splash10-001i-9000000000-c9ef4bd03969478fa7c4 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phosphite 20V, Negative-QTOF | splash10-03di-9000000000-659b5df2b4d0d05034d4 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phosphite 40V, Negative-QTOF | splash10-03di-9000000000-e0b8d6780f606f7862bc | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phosphite 10V, Positive-QTOF | splash10-001i-9000000000-2217559fc003c12425d5 | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phosphite 20V, Positive-QTOF | splash10-01q9-9000000000-cc5b88e673bf4ebe057e | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phosphite 40V, Positive-QTOF | splash10-03di-9000000000-9e391185195582f0b2c1 | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phosphite 10V, Negative-QTOF | splash10-001i-9000000000-f4e2d26d69c87164f445 | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phosphite 20V, Negative-QTOF | splash10-01q9-9000000000-f159e5e2dcf623faef98 | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phosphite 40V, Negative-QTOF | splash10-03di-9000000000-3d002249aad3025573b5 | 2021-09-25 | Wishart Lab | View Spectrum |
IR Spectra| Spectrum Type | Description | Deposition Date | Source | View |
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| Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M-H]-) | 2023-02-03 | FELIX lab | View Spectrum | | Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+Na]+) | 2023-02-03 | FELIX lab | View Spectrum |
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