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Citraconic acid

HCID 643798
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Basic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
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Basic information

CAS
498-23-7
Standard SMILES
C/C(=C/C(=O)O)C(=O)O
InChIKey
HNEGQIOMVPPMNR-IHWYPQMZSA-N
Molecular formula
C5H6O4
Average molar mass
130.1 g/mol
Monoisotopic mass
130.02660867

Overview

Citraconic acid is a dicarboxylic acid consisting of maleic acid having a methyl substituent at the 2-position. It has a role as a human metabolite. It is a dicarboxylic fatty acid and a dicarboxylic acid. It is functionally related to a maleic acid. It is a conjugate acid of a citraconate(2-).

Names & identifiers

Preferred name
Citraconic acid
IUPAC
(Z)-2-methylbut-2-enedioic acid
English name
Citraconic acid
Molecular formula
C5H6O4
Molecular weight
130.1

Names & synonyms

Citraconic acid2-methylmaleic acid498-23-7METHYLMALEIC ACIDcis-Methylbutenedioic acidCitraconsaeure(Z)-2-Methyl-2-butenedioic acid(2Z)-2-methylbut-2-enedioic acid(Z)-2-methylbut-2-enedioic acidMethyl-maleinsaeurealpha-methylmaleic acid0RQ6CXO9KD
Show more names
Citraconic2-METHYL-2-BUTENEDIOIC ACIDCitracoinc acidmethyl-maleicaciCitraconicacid,98+%kyselinacitrakonova
cis-2-methylbutenedioic acid2-methyl-2Z-butenedioic acid2-butenedioic acid, 2-methyl-, (2Z)-CHEBI:17626DTXSID601019903NSC-32949RefChem:577445DTXCID40909104

Database identifiers

CAS
498-23-7、7407-59-2
PubChem CID
643798
DTXSID
DTXSID601019903
ChEBI
CHEBI:17626
UNII
0RQ6CXO9KD
EC Number
207-858-7

Properties

Computed structural properties

XLogP
-0.1
Topological polar surface area
74.6 Ų
Hydrogen bond donors
2
Hydrogen bond acceptors
4
Rotatable bonds
2
Heavy atoms
9
Formal charge
0
Complexity
168

Experimental & physicochemical properties

DrugsPharmaceuticals -> Listed in ZINC15
LipidsFatty Acyls [FA] -> Fatty Acids and Conjugates [FA01] -> Dicarboxylic acids [FA0117]
SpringerMaterials PropertiesDiamagnetic susceptibility
Solubility783.0 mg/mL
Melting Point88 - 94 °C
Physical DescriptionSolid
Collision Cross Section · 2 items

118.2 Ų [M-H]- [CCS Type: DT; Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]

118.6 Ų [M-H]-

Physicochemical properties

Melting point
88 · 88-94 °C (lit.)
Boiling point
160.75 °C · 160.75°C (rough estimate)

Safety & regulation

Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.

GHS classification

GHS Classification · 4 items

Warning

H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]

P264, P270, P301+P317, P330, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 88 reports by companies from 2 notifications to the ECHA C&L Inventory.

Hazard information

Regulatory InformationChemical: 2-Butenedioic acid, 2-methyl-, (Z)-
Other Safety InformationEvaluation - Chemicals not considered for in depth evaluation - Not commercially active in Australia
Hazard Classes and CategoriesAcute Tox. 4 (100%)

Safety data

PPE
dust mask type N95 (US), Eyeshields, Gloves
wgk
3
rtecs
GE6650000
ridadr
2811
hs_code
29171900
Toxicity
LD50 in rats, mice (mg/kg): 1320, 2260 orally (Jenner)
risk_code
22-36/37/38
Signal word
Warning
Symbol(GHS)
GHS07,GHS06
hazard_code
Xn
safety_code
36-37/39-26
hazard_class
6.1(b)
Storage Class

Chemistry & industry

Pharmacology

MeSH Pharmacological ClassificationDrugs used to treat or prevent skin disorders or for the routine care of skin.
Cellular LocationsExtracellular

Applications

UsesCitraconic acid is used in synthetic or copolymer oils, in treating metals for adhesion of polyolefins, and in thermoplastics.

UsesCitraconic acid is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff fields.

Upstream & downstream products

Upstream raw materials

Citraconic anhydride

Downstream products

Itaconic acid
Additional notes · 1 item

DefinitionChEBI: Citraconic acid is a dicarboxylic acid consisting of maleic acid having a methyl substituent at the 2-position. It has a role as a human metabolite. It is a dicarboxylic acid and a dicarboxylic fatty acid. It is functionally related to a maleic acid. It is a conjugate acid of a citraconate(2-).

Related reactions

11 records
New reaction record
HRID 433006 reaction equation
HRID 433006As reactantuspto-grants-2003_12
HRID 480408 reaction equation
HRID 480408As reactantuspto-grants-2003_11
HRID 916526 reaction equation
HRID 916526As reactantuspto-grants-2007_09
HRID 1357316 reaction equation
HRID 1357316As productuspto-grants-2003_07
HRID 1438772 reaction equation
HRID 1438772As reactantuspto-grants-1977_11
HRID 1633822 reaction equation
HRID 1633822As reactantuspto-grants-2003_01
HRID 1658537 reaction equation
HRID 1658537As reactantuspto-grants-1976_06
HRID 1982270 reaction equation
HRID 1982270As productuspto-grants-1986_06
Page 1 of 2

Compound notes

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On this pageBasic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
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Nikkaji
J6.106I
Density
1 · 1,62 g/cm3
refractive index
1.4502 · 1.4502 (estimate)
storage temp.
-20 °C · Hygroscopic, -20°C Freezer, Under inert atmosphere
solubility
DMSO (Sparingly, Sonicated), Water (Slightly)
pka
1 · pK1:2.29(0);pK2:6.15(+1) (25°C)
form
Crystalline Powder
color
White to light beige
Water Solubility
FREELY SOLUBLE
Sensitive
Hygroscopic
Merck
14 · 14,2321
BRN
1722679 · 1722679
Henry's Law Constant
3.6 · 3.6×107 mol/(m3Pa) at 25℃, Yaws (2003)
Stability
Hygroscopic
InChI
1S/C5H6O4/c1-3(5(8)9)2-4(6)7/h2H,1H3,(H,6,7)(H,8,9)/b3-2-
InChIKey
HNEGQIOMVPPMNR-IHWYPQMZSA-N
SMILES
C\C(=C\C(O)=O)C(O)=O
CAS DataBase Reference
498 · 498-23-7(CAS DataBase Reference)
EWG's Food Scores
1 · 1
FDA UNII
0 RQ6CXO9KD · 0RQ6CXO9KD
NIST Chemistry Reference
2 · 2-Butenedioic acid, 2-methyl-, (Z)-(498-23-7)
UNSPSC Code
12352100 · 12352100
NACRES
22 · NA.22
Symbol(GHS)
7 · GHS07,GHS06
Signal word
Warning
Hazard statements
301 · H301-H302
Precautionary statements
264 · P264-P270-P301+P312+P330-P501-P301+P310a-P321-P405-P501a
PPE
95 · dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes
Xn
Risk Statements
22 · 22-36/37/38
Safety Statements
36 · 36-37/39-26
RIDADR
2811 · 2811
WGK Germany
3 · 3
RTECS
6650000 · GE6650000
HazardClass
6.1 · 6.1(b)
PackingGroup
III
HS Code
29171900 · 29171900
Storage Class
11 · 11 - Combustible Solids
Hazard Classifications
4 Oral · Acute Tox. 4 Oral
Toxicity
50 in · LD50 in rats, mice (mg/kg): 1320, 2260 orally (Jenner)
11 - Combustible Solids
packing_group
III
Hazard statements
H301-H302
Hazard Classifications
Acute Tox. 4 Oral
Precautionary statements
P264-P270-P301+P312+P330-P501-P301+P310a-P321-P405-P501a