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Safety Information

859796

Sigma-Aldrich

4-Imidazoleacrylic acid

99%

Synonym(s):

3-(4-Imidazolyl)acrylic acid, Urocanic acid

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About This Item

Empirical Formula (Hill Notation):
C6H6N2O2
CAS Number:
104-98-3
Molecular Weight:
138.12
Beilstein:
81405
EC Number:
203-258-4
MDL number:
MFCD00005203
UNSPSC Code:
12352005
PubChem Substance ID:
24888491
NACRES:
NA.22

biological source

synthetic

Assay

99%

form

powder

mp

226-228 °C (lit.)

SMILES string

OC(=O)\C=C\c1c[nH]cn1

InChI

1S/C6H6N2O2/c9-6(10)2-1-5-3-7-4-8-5/h1-4H,(H,7,8)(H,9,10)/b2-1+

InChI key

LOIYMIARKYCTBW-OWOJBTEDSA-N

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General description

4-Imidazoleacrylic acid also known as urocanic acid is a natural metabolite derived from histidine. It is majorly used as a UV chromophore with a strong absorption spectrum in the UV-B region in the range of 300-280 nm.

Application

4-Imidazoleacrylic acid can be used as a precursor for the synthesis of (±)-homohistidine, urocanic acid-modified chitosan, and N1-aryl(heteroaryl)alkyl-N2-[3-(1H-imidazol-4-yl)propyl]guanidines,.

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

859796-25G:
859796-VAR:
859796-BULK:
859796-100G:
859796-5G:
859796-1G:

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Certificates of Analysis (COA)

Lot/Batch Number
WXBD4069V
WXBC4648V
WXBC3681V
MKBZ8074V
WXBC3094V

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Lisa Eisenbeiss et al.
The Analyst, 145(20), 6586-6599 (2020-08-14)
Hair analysis has become an integral part in forensic toxicological laboratories for e.g. assessment of drug or alcohol abstinence. However, hair samples can be manipulated by cosmetic treatments, altering drug concentrations which eventually leads to false negative hair test results.
A theoretical study of the low-lying excited states of trans-and cis-urocanic acid
Page CS, et al.
The Journal of Physical Chemistry A, 103(48), 9864-9871 (1999)
Efficient gene delivery by urocanic acid-modified chitosan
Kim TH, et al.
Journal of Controlled Release : Official Journal of the Controlled Release Society, 93(3), 389-402 (2003)
Acylguanidines as bioisosteres of guanidines: N G-acylated imidazolylpropylguanidines, a new class of histamine H2 receptor agonists
Ghorai P, et al.
Journal of Medicinal Chemistry, 51(22), 7193-7204 (2008)
Harm C Arentsen et al.
The Journal of urology, 187(4), 1445-1449 (2012-02-22)
We determined the effect of protodynamic therapy against bladder cancer cells in vitro and in vivo. We investigated cis-urocanic acid in rat bladder cancer cell cultures and in an orthotopic rat urothelial carcinoma model to assess its safety and antiproliferative
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