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Sigma-Aldrich

4-Imidazolecarboxylic acid

98%

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About This Item

Empirical Formula (Hill Notation):
C4H4N2O2
CAS Number:
Molecular Weight:
112.09
EC Number:
MDL number:
UNSPSC Code:
12352005
PubChem Substance ID:
NACRES:
NA.22

Assay

98%

mp

294-295 °C (lit.)

SMILES string

OC(=O)c1c[nH]cn1

InChI

1S/C4H4N2O2/c7-4(8)3-1-5-2-6-3/h1-2H,(H,5,6)(H,7,8)

InChI key

NKWCGTOZTHZDHB-UHFFFAOYSA-N

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General description

4-Imidazolecarboxylic acid (1H-imidazole-4-carboxylic acid, H2imc) is an imidazole derivative that contains an imidazole group and a carboxylate group. It has been widely utilized to generate different types of coordination polymers. The anion of 4-imidazolecarboxylic acid has been reported to stabilize binuclear hydroxo complexes of trivalent lanthanides in the pH range 7-10.

Application

4-Imidazolecarboxylic acid (ICA) was used in the synthesis of triphenymethyl-protected 4-imidazole carboxylic acid (trityl-ImCOOH) which is employed to functionalize poly(propylene imine) dendrimers.
It may be used in the following studies:
  • In the synthesis of lanthanide sulfate–carboxylates, [Ln(HIMC)(SO4)(H2O)] (Ln = Dy and Eu, HIMC = 4-imidazolecarboxylic acid) by in situ decarboxylation in the presence of Cu(II) ions.
  • As an internal standard to obtain calibration curve by plotting the peak area ratios of histamine (HA) and several metabolites isolated from C3H/HeNCrj mice hair relative to ICA.
  • In the synthesis of tetranuclear manganese carboxylate complexes possessing imidazole-based N/O chelating ligands.

Other Notes

For a review of imidazoles, see Science of Synthesis.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Synthesis and catalytic properties of imidazole-functionalized poly (propylene imine) dendrimers.
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Tetranuclear manganese carboxylate clusters with imidazole-carboxylate chelating ligands. X-ray crystal structure of the 4-imidazoleacetate complex.
Boskovic C, et al.
Polyhedron, 19(18), 2111-2118 (2000)
Francisco Aguilar-Pérez et al.
Inorganic chemistry, 45(23), 9502-9517 (2006-11-07)
The anion of 4-imidazolecarboxylic acid (HL) stabilizes hydroxo complexes of trivalent lanthanides of the type ML(OH)+ (M = La, Pr) and M2L(n)(OH)(6-n) (M = La, n = 2; M = Pr, n = 2, 3; M = Nd, Eu, Dy
Sci. Synth., 12, 325-325 (2002)
Diaquabis(1H-imidazole-4-carboxylato-κ2N3,O4) cobalt (II).
Chen WS.
Acta Crystallographica Section E, Structure Reports Online, 68(10), m1246-m1246 (2012)

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