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Merck
CN

109428

4-Hydroxyantipyrine

99%

Synonym(s):

4-Hydroxy-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one, NSC 174055

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About This Item

Empirical Formula (Hill Notation):
C11H12N2O2
CAS Number:
1672-63-5
Molecular Weight:
204.23
NACRES:
NA.22
PubChem Substance ID:
24846917
UNSPSC Code:
12352100
MDL number:
MFCD00003143
Assay:
99%

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InChI

1S/C11H12N2O2/c1-8-10(14)11(15)13(12(8)2)9-6-4-3-5-7-9/h3-7,14H,1-2H3

SMILES string

CN1N(c2ccccc2)C(=O)C(O)=C1C

InChI key

SKVPTPMWXJSBTF-UHFFFAOYSA-N

assay

99%

mp

184-186 °C (lit.)

functional group

ketone

Quality Level

200

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General description

4-Hydroxyantipyrine is formed during oxidative deamination of aminopyrine. It is a metabolite of antipyrine.

Application

4-Hydroxyantipyrine was used to study the relationships between the metabolism of antipyrine, hexobarbitone and theophylline in man. It was used in a study on flow injection analysis system for the characterisation of pharmaceutical compounds via combination of diode array UV, 1H NMR, FT-IR spectroscopy and time-of-flight mass spectrometry.

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
0000281830
0000231851
0000219245
0000281830
0000231851

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C A Van Geel et al.
Mechanisms of ageing and development, 53(2), 169-177 (1990-04-09)
The influence of ageing on the metabolism of antipyrine by different forms of cytochrome P-450 was studied in vitro, by measuring the formation of antipyrine metabolites by microsomes isolated from untreated rats, which were grouped into 5 different ages. Km
J H Schellens et al.
British journal of clinical pharmacology, 26(4), 373-384 (1988-10-01)
1. Three model substrates for the characterization of drug oxidation activity, antipyrine (AP), hexobarbitone (HB) and theophylline (TH), were administered to 26 healthy volunteers on two different occasions: in the first experiment a combination of AP (250 mg) and HB
V L Lanchote et al.
Therapeutic drug monitoring, 19(6), 705-710 (1998-01-08)
A method has been developed for the simultaneous determination of antipyrine and its three major metabolites in plasma of patients with renal failure. Plasma samples (500 microl) were hydrolyzed with beta-glucuronidase/aryl sulphatase. The compounds, after addition of sodium chloride, were
R P Shrewsbury et al.
Research communications in chemical pathology and pharmacology, 64(3), 455-462 (1989-06-01)
Antipyrine metabolism was determined after hemodilution with 40 ml/kg of Fluosol in conscious, unrestrained female and male rats. Rats received an intravenous antipyrine dose (20 mg/kg) 24, 48, or 72 hours after hemodilution and the pharmacokinetic parameters were compared to
R P Shrewsbury et al.
Research communications in chemical pathology and pharmacology, 67(3), 411-414 (1990-03-01)
Two reports of antipyrine disposition in rats after hemodilution with 20, 40, or 80 ml/kg of Fluosol-DA are evaluated to determine if the extent of hemodilution influenced cytochrome P-450 mediated antipyrine metabolism. Alterations in antipyrine clearance (Cl) and 3-hydroxymethylantipyrine (3OHME)
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