<?xml version="1.0" encoding="UTF-8"?>
<compound>
  <id type="integer">4458</id>
  <title>T3D4404</title>
  <common-name>Methylmalonic acid</common-name>
  <description>Methylmalonic acid (C4H6O4) is an endogenous human metabolite with an average molecular weight of 118.09 g/mol. At room temperature, this compound exists as a solid. Methylmalonic acid belongs to the dicarboxylic acids and derivatives, a subclass of carboxylic acids and derivatives within the organic compounds.

In biological systems, the compound is detected in the liver and kidney tissues. It interacts with one recorded protein target, the methylmalonyl-CoA carboxyltransferase 12S subunit.

The compound is found in or released from 14 recorded sources. These include household cleaning and consumer products such as soap detergents, bleaching agents, perfumes within detergents and soaps, and cigar cigarettes. It is also identified in food preservation and building and construction materials, specifically ladders. Additionally, it is associated with electrical and electronic equipment, including electrodes, antennas, coils, conductors or conductive bodies characterised by the conductive materials, and electrically stimulated smoking devices.</description>
  <cas>516-05-2</cas>
  <pubchem-id>487</pubchem-id>
  <chemical-formula>C4H6O4</chemical-formula>
  <weight>118.09</weight>
  <appearance>White powder.</appearance>
  <melting-point>135°C</melting-point>
  <boiling-point></boiling-point>
  <density nil="true"/>
  <solubility>679.0 mg/mL</solubility>
  <specific-gravity nil="true"/>
  <flash-point nil="true"/>
  <vapour-pressure nil="true"/>
  <route-of-exposure nil="true"/>
  <target nil="true"/>
  <mechanism-of-toxicity>Methylmalonic acid is a vital intermediate in the metabolism of fat and protein. Abnormalities in methylmalonic acid metabolism lead to methylmalonic aciduria. This metabolic disease is attributed to a block in the enzymatic conversion of methylmalonyl CoA to succinyl CoA. Accumulation of Methylmalonic acid in the body has been shown to be toxic.</mechanism-of-toxicity>
  <metabolism nil="true"/>
  <toxicity nil="true"/>
  <lethaldose nil="true"/>
  <carcinogenicity>No indication of carcinogenicity to humans (not listed by IARC).</carcinogenicity>
  <use-source>This is an endogenously produced metabolite found in the human body. It is used in metabolic reactions, catabolic reactions or waste generation.</use-source>
  <min-risk-level nil="true"/>
  <health-effects>Chronically high levels of methylmalonic acid are associated with at least 5 inborn errors of metabolism including: Malonyl CoA decarboxylase deficiency, Malonic Aciduria, Methylmalonate Semialdehyde Dehydrogenase Deficiency, Methylmalonic Aciduria and Methylmalonic Aciduria Due to Cobalamin-Related Disorders.</health-effects>
  <symptoms nil="true"/>
  <treatment nil="true"/>
  <created-at type="dateTime">2014-08-29T06:51:02Z</created-at>
  <updated-at type="dateTime">2026-08-22T18:14:53Z</updated-at>
  <interacting-proteins nil="true"/>
  <wikipedia>Methylmalonic acid</wikipedia>
  <uniprot-id nil="true"/>
  <kegg-compound-id>C02170</kegg-compound-id>
  <omim-id nil="true"/>
  <chebi-id>30860</chebi-id>
  <biocyc-id nil="true"/>
  <ctd-id nil="true"/>
  <stitch-id nil="true"/>
  <drugbank-id>DB04183</drugbank-id>
  <pdb-id>DXX</pdb-id>
  <actor-id nil="true"/>
  <organism nil="true"/>
  <export type="boolean">true</export>
  <metabolizing-proteins nil="true"/>
  <transporting-proteins nil="true"/>
  <moldb-smiles>CC(C(O)=O)C(O)=O</moldb-smiles>
  <moldb-formula>C4H6O4</moldb-formula>
  <moldb-inchi>InChI=1S/C4H6O4/c1-2(3(5)6)4(7)8/h2H,1H3,(H,5,6)(H,7,8)</moldb-inchi>
  <moldb-inchikey>ZIYVHBGGAOATLY-UHFFFAOYSA-N</moldb-inchikey>
  <moldb-average-mass type="decimal">118.088</moldb-average-mass>
  <moldb-mono-mass type="decimal">118.02660868</moldb-mono-mass>
  <origin>Endogenous</origin>
  <state>Solid</state>
  <logp>0.21</logp>
  <hmdb-id>HMDB00202</hmdb-id>
  <chembl-id>CHEMBL1232416</chembl-id>
  <chemspider-id>473</chemspider-id>
  <structure-image-file-name nil="true"/>
  <structure-image-content-type nil="true"/>
  <structure-image-file-size type="integer" nil="true"/>
  <structure-image-updated-at type="dateTime" nil="true"/>
  <biodb-id nil="true"/>
  <synthesis-reference></synthesis-reference>
  <structure-image-caption nil="true"/>
  <chemdb-id>CHEM003364</chemdb-id>
  <dsstox-id>DTXSID00199549</dsstox-id>
  <toxcast-id nil="true"/>
  <stoff-ident-origin nil="true"/>
  <stoff-ident-id nil="true"/>
  <susdat-id>NS00015152</susdat-id>
  <iupac>2-methylpropanedioic acid</iupac>
  <moldb-polar-surface-area>74.6</moldb-polar-surface-area>
  <moldb-refractivity>23.5623</moldb-refractivity>
  <moldb-polarizability>10.057853065917067</moldb-polarizability>
  <moldb-rotatable-bond-count>2</moldb-rotatable-bond-count>
  <moldb-acceptor-count>4</moldb-acceptor-count>
  <moldb-donor-count>2</moldb-donor-count>
  <moldb-pka-strongest-acidic>2.4752703991264853</moldb-pka-strongest-acidic>
  <moldb-pka-strongest-basic nil="true"/>
  <moldb-physiological-charge>-2</moldb-physiological-charge>
  <moldb-number-of-rings>0</moldb-number-of-rings>
  <moldb-alogps-logp>0.17</moldb-alogps-logp>
  <moldb-alogps-logs>0.10</moldb-alogps-logs>
  <moldb-alogps-solubility>1.49e+02 g/l</moldb-alogps-solubility>
  <kingdom>Organic compounds</kingdom>
  <superklass>Organic acids and derivatives</superklass>
  <klass>Carboxylic acids and derivatives</klass>
  <subklass>Dicarboxylic acids and derivatives</subklass>
  <paper-count type="integer">8784</paper-count>
  <sync-id>CED0003358</sync-id>
  <structure-inchikey>ZIYVHBGGAOATLY-UHFFFAOYSA-N</structure-inchikey>
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  <structure-indexed-at type="dateTime">2026-09-19T04:01:16Z</structure-indexed-at>
</compound>
