Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 487Generated: October 23, 2026

Methylmalonic Acid

METHYLMALONIC ACID · 2-Methylmalonic acid · AI315327 · onic acid · NSC 25201 · AI3 15327 · AI3-15327 · Methylmalonic

https://huagongshe.com/en/chemical/487

Methylmalonic Acid molecular structure

Identifiers & Physical Properties

CAS No.1215348-94-9
Molecular formulaC4H6O4
Average molar mass118.09 g/mol
Monoisotopic mass118.02660867 g/mol
SMILESCC(C(=O)O)C(=O)O
InChIKeyZIYVHBGGAOATLY-UHFFFAOYSA-N
PubChem CID487
ChEMBLCHEMBL1232416
ChEBICHEBI:30860
EC No.208-219-5
DTXSIDDTXSID00199549

Chemical & Physical Properties

XLogP0.1
Topological polar surface area74.6
Hydrogen bond donors2
Hydrogen bond acceptors4
Rotatable bonds2
Heavy atoms8
Formal charge0
Complexity103
Solubility679000679.0 mg/mLDMSO (Slightly), Methanol (Slightly)soluble
Melting point135135 °C128-130 °C (lit.)
Physical DescriptionSolid
Dissociation Constants3.12 (at 20 °C)
Boiling point272.71°C (rough estimate)
Density1.45
Refractive index1.4304 (estimate)
Flash point2℃
Storage conditionsSealed in dry,Room Temperature
Physical stateCrystalline Powder
pKa (acidity coefficient)3.07, 5.76(at 25℃)
ColorWhite
Specific gravity1.455
pH3.23(1 mM solution)2.6(10 mM solution)2.05(100 mM solution)
BRN1756084
InChI1S/C4H6O4/c1-2(3(5)6)4(7)8/h2H,1H3,(H,5,6)(H,7,8)
InChIKeyZIYVHBGGAOATLY-UHFFFAOYSA-N
SMILESCC(C(O)=O)C(O)=O
CAS DataBase Reference516-05-2(CAS DataBase Reference)
EWG's Food Scores1
FDA UNII8LL8S712J7
NIST Chemistry ReferenceMethylmalonic acid(516-05-2)
UNSPSC Code41116107
NACRESNA.24
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH315-H319-H335
GHS precautionary statementsP302+P352-P305+P351+P338
Target organsRespiratory system
Hazard symbolsXi,Xn,F
Risk statements (R)36/37/38-36-20/21/22-11
Safety statements (S)26-36/37-16
UN transport numberUN 1648 3 / PGII
Water hazard class (WGK)3
RTECS numberOO1400000
Customs code29171900
Storage class11 - Combustible Solids
Hazard classEye Irrit. 2Skin Irrit. 2STOT SE 3

Safety & Regulations

GHS classificationThis chemical does not meet GHS hazard criteria for 5.4% (3 of 56) of reports.WarningH315 (94.6%): Causes skin irritation [Warning Skin corrosion/irritation]H319 (94.6%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]H335 (92.9%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposureRespiratory tract irritation]P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 56 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.Reported as not meeting GHS hazard criteria per 3 of 56 reports by companies.There are 5 notifications provided by 53 of 56 reports by companies with hazard statement code(s).Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
Hazard Classes and CategoriesSkin Irrit. 2 (94.6%)Eye Irrit. 2 (94.6%)STOT SE 3 (92.9%)Skin Irrit. 2 (100%)Eye Irrit. 2 (100%)STOT SE 3 (100%)
Health effectsChronically 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.
Toxicity summaryMethylmalonic 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.
Carcinogen ClassificationNo indication of carcinogenicity to humans (not listed by IARC).
Water hazard class (WGK)3
RTECS numberOO1400000
UN transport numberUN 1648 3 / PGII
Customs code29171900
Risk statements (R)36/37/38-36-20/21/22-11
Signal wordWarning
GHS pictogramGHS07
Hazard symbolsXi,Xn,F
Safety statements (S)26-36/37-16
Storage class11 - Combustible Solids
Target organsRespiratory system
GHS hazard statementsH315-H319-H335
Hazard classEye Irrit. 2Skin Irrit. 2STOT SE 3
GHS precautionary statementsP302+P352-P305+P351+P338

Applications & Uses

Uses

Methylmalonic acid can be used as a substrate in:Esterification reactions by various catalysts.Synthesis of pyrimidinium betaines with formamidine.Synthesis of malonic acid half thioester (MAHT).

Uses

2-Methylpropanedioic acid binds with coenzyme A to form methylmalonyl-CoA, also a metabolic intermediate transformed to succinic acid (SA) by a vitamin B12-dependent catalytic step, and is broadly used as a clinical biomarker of functional vitamin B12 status.

General Description

Methylmalonic acid is an indicator of vitamin B12 deficiency and methylmalonic acidemia. This Certified Spiking Solution is suitable for use in preparation of calibrators or controls in clinical and diagnostic testing using GC/MS or LC/MS.