3-Methylhippuric acid
Need Assistance?
  • US & Canada:
    +
  • UK: +

3-Methylhippuric acid

* Please kindly note that our products are not to be used for therapeutic purposes and cannot be sold to patients.

Α substituted hippurate analog as a substrate and inhibitor of peptidylglycine α-hydroxylating monooxygenase (PHM).

Category
Inhibitors containing Unusual Amino Acids
Catalog number
BAT-002081
CAS number
27115-49-7
Molecular Formula
C10H11NO3
Molecular Weight
193.20
3-Methylhippuric acid
IUPAC Name
2-[(3-methylbenzoyl)amino]acetic acid
Synonyms
[(3-Methylbenzoyl)amino]acetic acidm-Toluric acid; N-(3-Methylbenzoyl)glycine
Appearance
White solid
Purity
> 98.0 % (T)
Density
1.229 g/cm3
Melting Point
138-140 °C (lit.)
Boiling Point
418.5 °C at 760 mmHg
Storage
Store at 2-8 °C
InChI
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
Canonical SMILES
CC1=CC=CC(=C1)C(=O)NCC(=O)O
1. Modified method for determination of hippuric acid and methylhippuric acid in urine by gas chromatography
P Kongtip, J Vararussami, V Pruktharathikul J Chromatogr B Biomed Sci Appl. 2001 Feb 10;751(1):199-203. doi: 10.1016/s0378-4347(00)00463-1.
A modified method for the simultaneous determination of hippuric acid (HA) and o-, m- and p-methylhippuric acids (o-, m- and p-MHAs) in urine is described. These metabolites were extracted, derivatized into their methyl ester derivatives and analyzed using a gas chromatograph equipped with flame ionization detector and a DB-1 capillary column. The derivatives of HA, o-, m- and p-MHAs were well separated within 11 min. The accuracy and precision in the present method were sufficient for quantitative analysis, and the results obtained by the GC method were highly correlated with those by the HPLC method (NIOSH 8301).
2. [The simultaneous determination of hippuric acid, o-, m-, p-methylhippuric acids, mandelic acid and phenylglyoxylic acid in urine by HPLC]
C Burrini Med Lav. 1998 Sep-Oct;89(5):404-11.
A high-performance liquid chromatographic method is described for the simultaneous determination of six metabolites of aromatic hydrocarbons: hippuric acid (HA) from toluene; o-, m-, p-methylhippuric acids (o-, m-, p-MHA) from xylene; mandelic acid (MA) and phenylglyoxylic acid (PGA) from styrene and ethylbenzene. Metabolites were first extracted from urine by solid phase extraction with anion exchange resin, then isocratically separated on a C8 column with 3 microns particle size, 10 cm length and 3 mm internal diameter. Mobile phase was prepared diluting 16 mL of tetrahydrofuran, 14 mL of acetronitrile and 5 mL of methanol to 500 mL with phosphoric acid/potassium dihydrogen phosphate buffer 0.01 M (pH 2.7). The internal standard was 3-hydroxybenzoic acid. Chromatographic runs were completed in about 21 min. The accuracy and reproducibility obtained make this method useful for the biological monitoring of occupational exposure to toluene, xylene, styrene and ethylbenzene.
3. Simultaneous high-performance liquid chromatographic analysis of hippuric acid and ortho-, meta-, and para-methylhippuric acids in urine
R Tardif, J Brodeur, G L Plaa J Anal Toxicol. 1989 Nov-Dec;13(6):313-6. doi: 10.1093/jat/13.6.313.
A high-performance liquid chromatographic assay for the simultaneous analysis of hippuric and methylhippuric acids in urine is described. Compounds are first extracted from acidified urines after addition of o-methylbenzoylalanine (internal standard), using methyl-t-butyl ether. The organic phase is evaporated under nitrogen flow and the residue dissolved in the mobile phase which consisted of 91% potassium phosphate buffer (12.0mM, pH: 2.0), 4.5% methanol, and 4.5% tetrahydrofuran. The method described allows complete separation of meta- and para-methylhippuric acids in less than 20 min using a stainless steel column packed with octadecyl-dimethysilyl silica. The authors used this method to determine the urinary excretion of hippuric and methylhippuric acids in rabbits following exposure to a mixture of toluene and isomers of xylene. Data indicated that under the actual experimental conditions of exposure o-xylene is excreted to a lesser extent as a methylhippuric acid than the meta- and para-xylenes.
Online Inquiry
Verification code
Inquiry Basket