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2,3-dimethyl-4-nitroso-1-phenyl-3-pyrazolin-5-one

Product Name
2,3-dimethyl-4-nitroso-1-phenyl-3-pyrazolin-5-one
CAS No.
885-11-0
Chemical Name
2,3-dimethyl-4-nitroso-1-phenyl-3-pyrazolin-5-one
Synonyms
Nitrosoantipyrine;4-nitrosoantipyrine;Antipyrine Impurity 3;1,5-dimethyl-4-nitroso-2-phenylpyrazol-3-one;1,5-dimethyl-4-nitroso-2-phenyl-pyrazol-3-one;2,3-dimethyl-4-nitroso-1-phenyl-3-pyrazolin-5-one;1,5-dimethyl-4-nitroso-2-phenyl-1H-pyrazol-3(2H)-one;1,2-Dihydro-1,5-dimethyl-4-nitroso-2-phenyl-3H-pyrazol-3-one;1,2-Dihydro-1,5-dimethyl-4-nitroso-2-phenyl-3H-pyrazole-3-one;3H-Pyrazol-3-one, 1,2-dihydro-1,5-dimethyl-4-nitroso-2-phenyl-
CBNumber
CB0919294
Molecular Formula
C11H11N3O2
Formula Weight
217.22
MOL File
885-11-0.mol
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2,3-dimethyl-4-nitroso-1-phenyl-3-pyrazolin-5-one Property

Melting point:
>168°C (dec.)
storage temp. 
Amber Vial, -20°C Freezer, Under inert atmosphere
solubility 
Chloroform (Slightly), Methanol (Slightly)
form 
Solid
color 
Blue Green to Emerald Green
Stability:
Light Sensitive
InChI
InChI=1S/C11H11N3O2/c1-8-10(12-16)11(15)14(13(8)2)9-6-4-3-5-7-9/h3-7H,1-2H3
InChIKey
IEODZSWSXNQPQL-UHFFFAOYSA-N
SMILES
N1(C)C(C)=C(N=O)C(=O)N1C1=CC=CC=C1
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

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N-Bromosuccinimide Price

TRC
Product number
TRC-N491955-50MG
Product name
Nitrosoantipyrine
Packaging
50mg
Price
$188
Updated
2026/06/03
TRC
Product number
TRC-N491955-500MG
Product name
Nitrosoantipyrine
Packaging
500mg
Price
$1340
Updated
2026/06/03
Biosynth
Product number
AAA88511
Product name
Nitrosoantipyrine
Packaging
500mg
Price
$1050
Updated
2026/06/04
aablocks
Product number
AA008A58
Product name
1,2-Dihydro-1,5-dimethyl-4-nitroso-2-phenyl-3H-pyrazol-3-one
Purity
95%
Packaging
100mg
Price
$992
Updated
2026/05/28
TRC
Product number
N491955
Product name
Nitrosoantipyrine
Packaging
50mg
Price
$130
Updated
2021/12/16
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2,3-dimethyl-4-nitroso-1-phenyl-3-pyrazolin-5-one Chemical Properties,Usage,Production

Uses

Nitrosoantipyrine is a derivative of antipyrine (A697500), an analgesic agent.

2,3-dimethyl-4-nitroso-1-phenyl-3-pyrazolin-5-one Preparation Products And Raw materials

Raw materials

Preparation Products

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2,3-dimethyl-4-nitroso-1-phenyl-3-pyrazolin-5-one Suppliers

China 26 India 4 United States 2 Global 32
Guangzhou Langou Biotech Co., Ltd.
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15876533741
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2201851245@qq.com
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China
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J & K SCIENTIFIC LTD.
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18210857532; 18210857532
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86-10-82849933
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jkinfo@jkchemical.com
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China
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Chemsky（shanghai）International Co.,Ltd.
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021-50135380
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shchemsky@sina.com
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China
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Shanghai TaoSu Biochemical Technology Co., Ltd.
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021-33632979
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021-34692979
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China
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Shanghai Kewel Chemical Co., Ltd.
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021-64609169 18901607656
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021-64609160
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China
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MQ (shanghai) Pharmaceuticals Co., Ltd.
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13761635123
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sales@linyuepharm.com
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Shenzhen Polymeri Biochemical Technology Co., Ltd.
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+86-400-002-6226 +86-13028896684;
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sales@rrkchem.com
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China
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Shenzhen Botel Biotechnology Co. Ltd.
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13316949107 13316968096
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1979313431@qq.com
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China
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TOSUN PHARM
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020-66392521-118 18922260391
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3004261881@qq.com
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Energy Chemical
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021-58432009 400-005-6266
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021-58436166
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marketing@energy-chemical.com
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885-11-0, 2,3-dimethyl-4-nitroso-1-phenyl-3-pyrazolin-5-oneRelated Search:


  • 4-nitrosoantipyrine
  • 1,2-Dihydro-1,5-dimethyl-4-nitroso-2-phenyl-3H-pyrazol-3-one
  • 2,3-dimethyl-4-nitroso-1-phenyl-3-pyrazolin-5-one
  • 1,2-Dihydro-1,5-dimethyl-4-nitroso-2-phenyl-3H-pyrazole-3-one
  • 1,5-dimethyl-4-nitroso-2-phenyl-pyrazol-3-one
  • 1,5-dimethyl-4-nitroso-2-phenylpyrazol-3-one
  • Nitrosoantipyrine
  • 3H-Pyrazol-3-one, 1,2-dihydro-1,5-dimethyl-4-nitroso-2-phenyl-
  • Antipyrine Impurity 3
  • 1,5-dimethyl-4-nitroso-2-phenyl-1H-pyrazol-3(2H)-one
  • 885-11-0
  • Aromatics, Heterocycles, Isotope Labelled Compounds, Pharmaceuticals, Intermediates & Fine Chemicals