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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.)

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

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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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
L Campbell et al.
British journal of industrial medicine, 45(2), 127-132 (1988-02-01)
In a series of experiments to investigate interactions between industrial solvents and common medications the interaction between m-xylene and aspirin was studied. As both these substances are metabolised and excreted as glycine conjugates there would possibly be competition for this
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).
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

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