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328014

Sigma-Aldrich

3-Methylhippuric acid

98%

Synonym(s):

N-(3-Methylbenzoyl)glycine, m-Toluric acid

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About This Item

Linear Formula:
CH3C6H4CONHCH2CO2H
CAS Number:
Molecular Weight:
193.20
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Assay

98%

mp

138-140 °C (lit.)

functional group

amide
carboxylic acid

SMILES string

Cc1cccc(c1)C(=O)NCC(O)=O

InChI

1S/C10H11NO3/c1-7-3-2-4-8(5-7)10(14)11-6-9(12)13/h2-5H,6H2,1H3,(H,11,14)(H,12,13)

InChI key

YKAKNMHEIJUKEX-UHFFFAOYSA-N

General description

3-Methylhippuric acid is also referred as m-methyl-hippuric acid. It is major product of xylene biotransformation in urine.

Application

3-Methylhippuric acid was employed as biological marker in studies on occupational exposure to xylene (solvent).

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

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D de Carvalho et al.
International archives of occupational and environmental health, 63(1), 33-37 (1991-01-01)
The industrial solvents, toluene and xylene, have physicochemical properties that can be hazardous to the workers exposed. Since hippuric acid and m-methyl-hippuric acid represent the products of toluene and xylene biotransformation in urine, they are used as biological markers in
R Tardif et al.
Occupational and environmental medicine, 51(3), 187-191 (1994-03-01)
This study was undertaken to determine whether previous subacute treatment with ethanol could modify the kinetics of m-xylene in humans. A group of six volunteers was exposed twice to either 100 or 400 ppm of m-xylene during two hours (between
M J Miller et al.
International archives of occupational and environmental health, 72(2), 89-97 (1999-04-10)
Solvent exposures commonly involve mixtures of substances or mixtures of isomers of a single solvent. These may be metabolised through common pathways, resulting in the potential for metabolic interactions. These may then lead to accumulation of solvent or metabolic intermediates
Determination of methylhippuric acid in human urine by high-performance liquid chromatography and by isotachophoresis.
J Sollenberg et al.
Journal of chromatography, 343(2), 419-423 (1985-10-11)
A Astier
Journal of chromatography, 573(2), 318-322 (1992-01-17)
A high-performance liquid chromatographic method is described for the simultaneous determination of six urinary metabolites of several aromatic chemicals: phenol (from benzene), hippuric acid (from toluene), 3-methylhippuric acid (from xylene), mandelic and phenylglyoxylic acid (from styrene) and 4-nitrophenol (from nitrobenzene).

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