| Record Information |
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| Version | 2.0 |
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| Created at | 2022-03-17 21:08:33 UTC |
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| Updated at | 2022-03-17 21:08:33 UTC |
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| NP-MRD ID | NP0049191 |
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| Secondary Accession Numbers | None |
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| Natural Product Identification |
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| Common Name | S-Methyl-L-methionine |
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| Description | S-Methylmethionine, also known as vitamin u, belongs to the class of organic compounds known as methionine and derivatives. Methionine and derivatives are compounds containing methionine or a derivative thereof resulting from reaction of methionine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom. S-Methylmethionine is sometimes referred to as vitamin U, but it is not considered a true vitamin. Lightly kilned malts such as pilsner or lager malts retain much of their SMM content while higher kilned malt such as pale ale malt has substantially more of the SMM converted to DMS in the malt. S-Methylmethionine is a very strong basic compound (based on its pKa). Outside of the human body, S-Methylmethionine is found, on average, in the highest concentration within tea and garden tomato (var.). S-Methylmethionine has also been detected, but not quantified in, several different foods, such as yardlong beans, chicory leaves, daikon radish, pistachio, and spearmints. This could make S-methylmethionine a potential biomarker for the consumption of these foods. S-Methylmethionine is claimed to have protective effects in the gastrointestinal mucosa and in the liver. Darker kilned malts such as Munich malt have virtually no SMM content since most has been converted to DMS. The coproduct is S-adenosyl homocysteine. A few plants use S-methylmethionine as a precursor to the osmolyte dimethylsulfoniopropionate (DMSP). |
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| Structure | InChI=1S/C6H13NO2S/c1-10(2)4-3-5(7)6(8)9/h5H,3-4,7H2,1-2H3/p+1 |
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| Synonyms | | Value | Source |
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| (3-Amino-3-carboxypropyl)dimethylsulfonium(1+), 9ci, 8ci | HMDB | | S-Methyl-L-methionine | HMDB | | Chloride, methionine methylsulfonium | HMDB | | Methionine methylsulfonium chloride | HMDB | | Methylmethionine | HMDB | | Methylmethionine sulfonium chloride | HMDB | | Methylsulfonium chloride, methionine | HMDB | | S Methylmethionine | HMDB | | Chloride, methylmethioninesulfonium | HMDB | | Sulfonium, ((3S)-3-amino-3-carboxypropyl)dimethyl-, inner salt | HMDB | | Methylmethioninesulfonium chloride | HMDB | | Vitamin u | HMDB |
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| Chemical Formula | C6H14NO2S |
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| Average Mass | 164.2460 Da |
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| Monoisotopic Mass | 164.07452 Da |
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| IUPAC Name | (3-amino-3-carboxypropyl)dimethylsulfanium |
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| Traditional Name | S-methylmethionine |
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| CAS Registry Number | 13065-25-3 |
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| SMILES | C[S+](C)CCC(N)C(O)=O |
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| InChI Identifier | InChI=1S/C6H13NO2S/c1-10(2)4-3-5(7)6(8)9/h5H,3-4,7H2,1-2H3/p+1 |
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| InChI Key | YDBYJHTYSHBBAU-UHFFFAOYSA-O |
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| Experimental Spectra |
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| Not Available | | Predicted Spectra |
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| Not Available | | Chemical Shift Submissions |
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| Not Available | | Species |
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| Species of Origin | |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as methionine and derivatives. Methionine and derivatives are compounds containing methionine or a derivative thereof resulting from reaction of methionine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom. |
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| Kingdom | Organic compounds |
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| Super Class | Organic acids and derivatives |
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| Class | Carboxylic acids and derivatives |
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| Sub Class | Amino acids, peptides, and analogues |
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| Direct Parent | Methionine and derivatives |
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| Alternative Parents | |
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| Substituents | - Methionine or derivatives
- Alpha-amino acid
- Thia fatty acid
- Fatty acid
- Fatty acyl
- Amino acid
- Carboxylic acid
- Monocarboxylic acid or derivatives
- Organic nitrogen compound
- Amine
- Hydrocarbon derivative
- Organic oxide
- Primary amine
- Organosulfur compound
- Organooxygen compound
- Organonitrogen compound
- Organopnictogen compound
- Primary aliphatic amine
- Organic oxygen compound
- Carbonyl group
- Organic cation
- Aliphatic acyclic compound
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| Molecular Framework | Aliphatic acyclic compounds |
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| External Descriptors | Not Available |
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| Physical Properties |
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| State | Not Available |
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| Experimental 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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| Predicted Properties | |
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