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1040016

USP

Antipyrine Related Compound A

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

3-Methyl-1-phenyl-2-pyrazoline-5-one, 5-Methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one

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Pack SizeSKUAvailabilityPrice
25 mg

Estimated to ship onMay 25, 2026fromMILWAUKEE

$1,390.00

About This Item

Empirical Formula (Hill Notation):
C10H10N2O
CAS Number:
89-25-8
Molecular Weight:
174.20
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
329749047
MDL number:
MFCD00003138
Beilstein/REAXYS Number:
609575

$1,390.00

Estimated to ship onMay 25, 2026Details

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grade

pharmaceutical primary standard

API family

antipyrine

manufacturer/tradename

USP

bp

287 °C/265 mmHg (lit.)

mp

126-128 °C (lit.)

application(s)

pharmaceutical (small molecule)

format

neat

storage temp.

2-8°C

SMILES string

CC1=NN(C(=O)C1)c2ccccc2

InChI

1S/C10H10N2O/c1-8-7-10(13)12(11-8)9-5-3-2-4-6-9/h2-6H,7H2,1H3

InChI key

QELUYTUMUWHWMC-UHFFFAOYSA-N

General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.
For further information and support please go to the website of the issuing Pharmacopoeia.

Application

Antipyrine Related Compound A USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia. Also, for use with USP monographs such as:
  • Antipyrine
  • Antipyrine and Benzocaine Otic Solution

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

Sales restrictions may apply.

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grade

pharmaceutical primary standard

grade

pharmaceutical primary standard

grade

pharmaceutical primary standard

grade

pharmaceutical primary standard

application(s)

pharmaceutical (small molecule)

application(s)

pharmaceutical (small molecule)

application(s)

pharmaceutical (small molecule)

application(s)

pharmaceutical (small molecule)

format

neat

format

neat

format

neat

format

neat

bp

287 °C/265 mmHg (lit.)

bp

-

bp

-

bp

-

API family

antipyrine

API family

aprepitant

API family

antipyrine

API family

paliperidone

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302,H319

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2

Storage Class

11 - Combustible Solids

wgk

WGK 1

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Global Trade Item Number

SKUGTIN
1040016-25MG04061833840016

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