3-Nitro-1H-pyrazole

Product Name: 3-Nitro-1H-pyrazole
CAS No.: 26621-44-3
Chemical Name: 3-Nitro-1H-pyrazole
Synonyms: 5-NITRO-1H-PYRAZOLE;3-nitropyrazole;VITAS-BB TBB000666;Pyrazole, 3-nitro-;3(5)-Nitropyrazole;5-Nitro-1H-pyrazol;3-Nitro-1H-pyrazoL;3-Nitropyrazole>3-Nitro-1H-pyrazole;1H-Pyrazole, 3-nitro-
CBNumber: CB7744572
Molecular Formula: C3H3N3O2
Formula Weight: 113.07
MOL File: 26621-44-3.mol

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3-Nitro-1H-pyrazole Property

Melting point:: 173-175 °C
Boiling point:: 334.0±15.0 °C(Predicted)
Density: 1.552±0.06 g/cm3(Predicted)
storage temp.: Sealed in dry,Room Temperature
solubility: soluble in Methanol
form: powder to crystal
pka: 8.32±0.10(Predicted)
color: White to Orange to Green
InChI: InChI=1S/C3H3N3O2/c7-6(8)3-1-2-4-5-3/h1-2H,(H,4,5)
InChIKey: MZRUFMBFIKGOAL-UHFFFAOYSA-N
SMILES: N1C=CC([N+]([O-])=O)=N1
CAS DataBase Reference: 26621-44-3(CAS DataBase Reference)
NIST Chemistry Reference: 3(5)-nitropyrazole(26621-44-3)

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Safety

Hazard Codes: Xn
Risk Statements: 22-36/37/38
Safety Statements: 22-26-36/37/39
HazardClass: IRRITANT
HS Code: 2933199090

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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

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

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

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N-Bromosuccinimide Price

TCI Chemical

Product number: N0937
Product name: 3-Nitropyrazole
Purity: >98.0%(GC)
Packaging: 1g
Price: $54
Updated: 2025/07/31

TCI Chemical

Product number: N0937
Product name: 3-Nitropyrazole
Purity: >98.0%(GC)
Packaging: 5g
Price: $181
Updated: 2025/07/31

TRC

Product number: N546570
Product name: 3-Nitro-1H-pyrazole
Packaging: 5g
Price: $45
Updated: 2021/12/16

American Custom Chemicals Corporation

Product number: CHM1052622
Product name: 3-NITROPYRAZOLE
Purity: 95.00%
Packaging: 5MG
Price: $451.95
Updated: 2021/12/16

AK Scientific

Product number: X0233
Product name: 3-Nitro-1H-pyrazole
Packaging: 500g
Price: $507
Updated: 2021/12/16

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3-Nitro-1H-pyrazole Chemical Properties,Usage,Production

Chemical Properties

light brown powder

Uses

3-Nitro-1H-pyrazole is a pyrazole compound with a nitro functional group, widely used in organic synthesis. The substance can be used in reaction systems such as substitution, nitration or condensation for the preparation of other heterocyclic compounds.

Synthesis

7119-95-1

26621-44-3

The general procedure for the synthesis of 3-nitro-1H-pyrazole from 1-nitropyrazole is as follows: Step A: 1-nitropyrazole (3.45 g, 30.5 mmol) was mixed with benzonitrile (33 mL) and heated with stirring at 180 °C for 3 hours. Upon completion of the reaction, the mixture was cooled to room temperature, diluted with hexane and stirring was continued for 20 min at room temperature. The precipitated solid was collected by filtration to afford 3-nitro-1H-pyrazole as a tan solid (3.16 g, 91% yield). Product characterization data: 1H NMR (300 MHz, DMSO-d6) δ 13.94 (br s, 1H), 8.03 (d, J = 2.4 Hz, 1H), 7.03 (t, J = 2.4 Hz, 1H).

References

[1] Archiv der Pharmazie, 1995, vol. 328, # 4, p. 349 - 358
[2] Patent: WO2010/29461, 2010, A1. Location in patent: Page/Page column 63-64
[3] Patent: WO2012/30944, 2012, A2. Location in patent: Page/Page column 97
[4] Patent: US2012/53174, 2012, A1. Location in patent: Page/Page column 45
[5] Patent: WO2012/30924, 2012, A1. Location in patent: Page/Page column 124

3-Nitro-1H-pyrazole Preparation Products And Raw materials

Raw materials

Preparation Products

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3-Nitro-1H-pyrazole Suppliers

Americas 1 Belgium 1 China 202 Europe 2 Germany 1 India 14 Japan 1 Russia 1 Switzerland 1 United Kingdom 7 United States 26 Global 257

Nantong Haigine Pharma Technology Co., Ltd

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Jia Xing Isenchem Co.,Ltd

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View Lastest Price from 3-Nitro-1H-pyrazole manufacturers

Career Henan Chemical Co

Product: 3-Nitro-1H-pyrazole 26621-44-3
Price: US $8.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 10tons
Release date: 2018-12-23

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5-Nitro-1H-pyrazol

3-nitro-1H-pyrazole(SALTDATA: FREE)

1H-Pyrazole, 3-nitro-

3(5)-Nitropyrazole

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VITAS-BB TBB000666

SALOR-INT L119687-1EA

5-NITRO-1H-PYRAZOLE

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26621-44-3

26620-44-3

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