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Hippuric acid

CAS No.
495-69-2
Chemical Name:
Hippuric acid
Synonyms
hippurate;BENZOYLGLYCINE;hippuric;AKOS B029712;Hippursaeure;Benzamidoacetic acid;CPD-425;NSC 9982;BZ-GLY-OH;BZO-GLY-OH
CBNumber:
CB0483177
Molecular Formula:
C9H9NO3
Molecular Weight:
179.17
MDL Number:
MFCD00002692
MOL File:
495-69-2.mol
MSDS File:
SDS
Last updated:2024-03-22 14:56:24

Hippuric acid Properties

Melting point 187-191 °C (lit.)
Boiling point 311.69°C (rough estimate)
Density 1,371 g/cm3
refractive index 1.5600 (estimate)
storage temp. Store below +30°C.
solubility 3.26g/l
pka 3.62(at 25℃)
form Crystalline Powder
color White to almost white
PH 2.5-3.5 (10g/l, H2O, 20℃)(slurry)
Water Solubility Soluble in water.
Merck 14,4716
BRN 1073987
Stability Stable. Incompatible with oxidizing agents.
InChIKey QIAFMBKCNZACKA-UHFFFAOYSA-N
LogP 0.771
CAS DataBase Reference 495-69-2(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII TE0865N2ET
EPA Substance Registry System Glycine, N-benzoyl- (495-69-2)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictograms
GHS05,GHS07
Signal word  Danger
Hazard statements  H302-H315-H318-H335-H319
Precautionary statements  P280a-P304+P340-P405-P501a-P264-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313-P261-P280-P305+P351+P338
Hazard Codes  Xn,Xi
Risk Statements  22-37/38-41-36/37/38
Safety Statements  26-39-36/37-22
WGK Germany  3
RTECS  MR8150000
3-10
TSCA  Yes
HazardClass  IRRITANT
HS Code  29242990
NFPA 704
1
3 0

Hippuric acid price More Price(36)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 8.20649 Hippuric acid for synthesis 495-69-2 100g $54.5 2024-03-01 Buy
Sigma-Aldrich 112003 Hippuric acid 98% 495-69-2 5g $49.9 2024-03-01 Buy
Sigma-Aldrich 8.20649 Hippuric acid for synthesis 495-69-2 500g $169 2024-03-01 Buy
Sigma-Aldrich 112003 Hippuric acid 98% 495-69-2 100g $52.4 2024-03-01 Buy
TCI Chemical H0143 Hippuric Acid >98.0%(T) 495-69-2 25g $18 2024-03-01 Buy
Product number Packaging Price Buy
8.20649 100g $54.5 Buy
112003 5g $49.9 Buy
8.20649 500g $169 Buy
112003 100g $52.4 Buy
H0143 25g $18 Buy

Hippuric acid Chemical Properties,Uses,Production

Physical and Chemical Properties

Hippuric acid is also known as "Benzoylaminoethanoic acid",its molecular formula is C9H9NO3. The molecular weight is 179.18. As colorless crystals. Melting point 187~188 ℃. It's soluble in cold water, chloroform, ether, cold ethanol, slightly soluble in amyl alcohol, soluble in hot water, hot ethanol, sodium phosphate solution, almost insoluble in benzene, carbon disulfide, petroleum ether. Naturally it occurs in herbivores (such as horses) of urine, it is also present in small amounts in human urine,it is easily hydrolyzed to benzoic acid and glycine. Hippuric acid can reduce urine pH within a certain range,which makes the bacteria living environment change, and then plays a synergistic bactericidal effect. Urinary hippuric acid is measured using pyridine-benzene chloride colorimetry. The principle is that hippuric acid reacts with benzene sulfonyl chloride in pyridine solution, and the product in ethanol solution is yellow compound, according to the color depth, quantitative analysis is processed by colorimetry. Normal urine hippuric acid content varies widely because of different varieties of diet and intake (from 0.3 to 2.5 grams per day), and there are individual differences. After Toluene goes into the body, through metabolic transformation, most of it becomes to hippuric acid and is excreted through urine. Determination of horse urine  hippuric acid content can be used as  exposure indicators to reflect the body's absorption of toluene, but it can not serve as indicators of the diagnosis.
Hippuric acid can be made by reaction of benzoyl chloride with glycine in sodium hydroxide solution . It can be used for biochemical reagents and organic synthesis. Hippuric acid ammonium salt is crystal, soluble in water, soluble in ethanol; potassium salt is crystal, containing single molecule of crystal water, soluble in water, soluble in ethanol.
Properties, uses, methods of synthesis of hippuric acid Information compiled by Andy of ChemicalBook (2016-11-19).

Hippuric acid excretion test

The use of the principles of sodium benzoate going into the human body and  binding  glycine  in the liver to be non-toxic hippuric acid and being excreted with the urine,can be used to exam  liver detoxification function, which is called hippuric acid excretion test. The kidneys can not only excrete hippuric acid, it can also synthesize a small amount of  hippuric acid .It is only in normal renal function that hippuric acid test can truly reflect the liver's detoxification function using hippuric acid excretion test . A little after the subjects take breakfast, oral 6g sodium benzoate is taken. 4h after taking the drug, collect the urine, measure the urine excretion, the normal amount ofhippuric acid after 4h discharge should be> 3.0g. To avoid nausea and vomiting induced often by oral sodium benzoate  , intravenous injection 1.77g sodium benzoate can be slowly done  ,urine is collected 1h after injection, discharge amount is measured  , the  normal discharge amount should be 1h> 0.7g. When there is liver parenchymal disease, such as hepatitis, cirrhosis and liver necrosis, the liver synthesis of hippuric acid dysfunctions, which decreases production of hippuric acid  . Obstructive jaundice causes small changes. Reduced renal blood flow and renal excretion dysfunction also lead to the reducing of the amount of hippuric acid discharge . Some fruits contain benzoic acid  such as apples, bananas, etc., they should be banned when testing. Hippuric acid test has many factors and sodium benzoate can cause adverse reactions in patients, and the valuation of liver detoxification function is less precise, it has been less clinical.
Reference: China Medical Encyclopedia twenty-seven DIAGNOSIS  [author:Sun Rongwu]

Uses

The product is used for medicine, dyes intermediates and it is used for the production of fluorescent yellow H8GL, disperse fluorescent FFL and so on.

production method

Benzoyl chloride reacts with the amino acid in sodium hydroxide solution, amido sodium benzene is obtained, then it is acidized with hydrochloric acid. The amino acid is dissolved in sodium hydroxide solution, at the same time drop  benzoyl chloride and sodium hydroxide solution  below 30 ℃  , the reaction solution is always alkaline. After finishing adding, stir for 30min. Then add  hydrochloric acid to pH 2, filter  crude, use water to recrystallize , hippuric acid is obtained. Consumption of raw materials fixed: amino acid (90%) 610kg/t, benzoyl chloride (60%) 1520kg/t, caustic soda (30%) 1960kg/t, hydrochloric acid (30%) 900kg/t.

Chemical Properties

White crystalline powder

Uses

Hippuric acid is used as a intermediate for the manufacturing medicine and other organic compounds. Hippuric acid can be used to study cell biology, chemical biology, bioactive small molecules, amino acid derivatives, peptide synthesis, chemical synthesis and nutrition. Hippuric acid has been used to inform the metabolism and urinary excretion of procyanidins.

Uses

N-Benzoylglycine also known as Hippuric Acid is the glycine conjugate of benzoic acid commonly found in ruminant urine. It is synthesized in the liver and its production is greatly increased following consuption of benzoic acid. In itself it does not have a direct biological function, however p-hydroxy-hippurica acid can be used as an inhibitor of Ca2+ ATPase.

Definition

ChEBI: An N-acylglycine in which the acyl group is specified as benzoyl.

Preparation

Preparation of Hippuric acid from Glycine.
Principle: The hydroxy and amino functions can be easily benzoylated using Benzoyl chloride in aqueous alkaline conditions. This reaction is known as Schotten-Baumann reaction.
Reaction:
Preparation of Hippuric acid from Glycine
Procedure: Dissolve 0.5 g of glycine in 5 ml of 10% NaOH solution in a 25 ml conical flask. Add 0.9 ml of benzoyl chloride in five portions to the solution. Stopper the flask and shake vigorously after each addition until all the benzoyl chloride is reacted. Transfer the solution to a beaker and add few grams of ice and add conc. HCl slowly with stirring until the solution is acidic to litmus paper. Filter the crystalline precipitate of the product on a Buchner funnel, wash with cold water and drain well. Place the solid in a conical flask with 10 ml CCl4 and boil gently for 10 min. Allow the mixture to cool slightly, filter under gentle suction and wash with 10-20 ml CCl4. Record the practical yield and re-crystallize it.
Re-crystallization: Dissolve the crude product from boiling water (5 ml), with addition of decolorizing charcoal if necessary, filter the hot solution and cool the filtrate. The crystals of the product separate out. Filter, dry and record the melting point and TLC [using Butanal : acetic acid: water (4 : 1 : 1) as solvent or CHCl3:methanol (9 : 1) or toluene].

Purification Methods

Crystallise the acid from boiling H2O. Dry it over P2O5. Also purify it by dissolving 135-140g in 2L of boiling H2O, filtering through a steam-heated funnel and allowing to crystallise at ~20o (yield 115-122g first crop, m 186-187o). [Ingersoll & Babcock Org Synth Coll Vol II 328 1943, Beilstein 9 225, I 100.]

98-88-4
56-40-6
495-69-2
Synthesis of Hippuric acid from Benzoyl chloride and Glycine
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Hippuric acid pictures 2024-03-28 Hippuric acid
495-69-2
US $50.00 / kg 1kg 99% 1000 hebei hongtan Biotechnology Co., Ltd
Bz-Gly-OH pictures 2024-01-22 Bz-Gly-OH
495-69-2
US $8.00-0.80 / KG 1KG 99% g-kg-tons, free sample is available Henan Fengda Chemical Co., Ltd
Hippuric acid pictures 2024-01-14 Hippuric acid
495-69-2
US $0.00 / KG 1KG 99% 50000KG/month Hebei Mojin Biotechnology Co., Ltd
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  • Hippuric acid
    495-69-2
  • US $50.00 / kg
  • 99%
  • hebei hongtan Biotechnology Co., Ltd
  • Bz-Gly-OH pictures
  • Bz-Gly-OH
    495-69-2
  • US $8.00-0.80 / KG
  • 99%
  • Henan Fengda Chemical Co., Ltd
  • Hippuric acid pictures
  • Hippuric acid
    495-69-2
  • US $0.00 / KG
  • 99%
  • Hebei Mojin Biotechnology Co., Ltd
TIMTEC-BB SBB003759 N-BENZOYLGLYCINE Acetic acid, (benzoylamino)- Acido ippurico acidoippurico Benaamidoacaticacid benzamidoaceticacid Benzenecarboxamide, N-carboxymethyl- Benzoylaminoethanoicacid Benzoylglycin Benzoylglycocoll Glycine,N-benzoyl- n-benzoyl-glycin Phenylcarbonylaminoacetic acid phenylcarbonylaminoaceticacid NSC 9982 Hippuric Acid , 98.0%(T) 2-(phenylcarbonylamino)ethanoic acid 2-[(oxo-phenylmethyl)amino]acetic acid ACETIC ACID,BENZAMIDE HIPPURIC ACID BENZAMINOACETIC ACID BENZOYLAMINOACETIC ACID BZ-GLY-OH BZO-GLY-OH HIPPURIC ACID Benzamidoessigsaeure Benzoylaminoessigsaeure CPD-425 HIPURIC ACID N-Benzoylglycine Benzoylglycine Benzoylaminoacetic acid HIPPURIC ACID FREE ACID HippuricAcid,>99% Hippuricacid,98% N-benzoylaminoacetic acid HIPPURICACID,REAGENT N-BENZOYL GLYCINE / HIPPURIC ACID HIPPURIC ACID(RG) N-Benzoylglycine Benzoylglycine Hippuric acid,N-Benzoylglycine, Benzoylaminoacetic acid N-Benzoylglycine, Benzoylaminoacetic acid GLYCINE, N-BENZOYL (HIPPURIC ACID) Hippuric acid, 98% 100GR 2-(BenzoylaMino)acetic Acid 2-benzamidoacetate HippuricAcid> HIPPURIC ACID FOR SYNTHESIS 100 G Hippuric acid USP/EP/BP HIPPURIC ACID For Synthesis AKOS B029712 Benzamidoacetic acid hippuric BENZOYLGLYCINE hippurate Hippursaeure Hippuric acid (2-Benzamidoacetic acid) 495-69-2 459-69-2 C6H5CONHCH2CO2H