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393797

Sigma-Aldrich

3-Amino-5-phenylpyrazole

98%

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About This Item

Empirical Formula (Hill Notation):
C9H9N3
CAS Number:
1572-10-7
Molecular Weight:
159.19
MDL number:
MFCD00191749
UNSPSC Code:
12352100
PubChem Substance ID:
24864542
NACRES:
NA.22

Assay

98%

mp

124-127 °C (lit.)

SMILES string

Nc1cc([nH]n1)-c2ccccc2

InChI

1S/C9H9N3/c10-9-6-8(11-12-9)7-4-2-1-3-5-7/h1-6H,(H3,10,11,12)

InChI key

PWSZRRFDVPMZGM-UHFFFAOYSA-N

General description

3-Amino-5-phenylpyrazole (3-phenyl-1H-pyrazol-5-amine), an amino pyrazole derivative, is an aza-heterocyclic amine. It has been reported to be synthesized by heating either 3-amino-4-bromo- or 3-amino-5-phenylisothiazole in the presence of anhydrous hydrazine. On reaction with ZnCl2 it affords chlorido-tris(3-amino-5-phenyl-1Hpyrazole-N2)zinc (II) chloride.

Application

3-Amino-5-phenylpyrazole ((3-phenyl-1H-pyrazol-5-amine) may be used in the synthesis of the following:
  • Urea derivatives by reaction with azido(6-(benzofuran-2-yl)-2-methylpyridin-3-yl) methanone.
  • 2-Mercaptoacetamide analogs by treating with thioglycolic acid.
  • 3-(Substituentpyrimidayl)-5,6-benzocoumarins by treating with 3-(2′-formyl-1′-chlorovinyl)-5,6-benzocoumarin.
  • Substituted 2,7-diphenylpyrazolo[1,5-a]pyrimidine-5-carboxylic esters by reacting with substituted β-diketo esters.
  • N-ethoxycarbonylthiourea derivative by reacting with ethoxycarbonyl isothiocyanate.
  • Heterobiaryl pyrazolo[3,4-b]pyridines by reacting with indole-3-carboxaldehyde.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

393797-BULK:
393797-5G:
393797-VAR:
393797-1G:

Certificates of Analysis (COA)

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Crystal structure of chlorido-tris (3-amino-5-phenyl-1H pyrazole-N2) zinc (II) chloride, [ZnCl (C9H9N3)3] Cl.
Jacimovic ZK, et al
Zeitschrift fur Kristallographie, 226(3), 397-399 (2011)
The conversion of isothiazoles into pyrazoles using hydrazine.
Ioannidou HA and Koutentis PA
Tetrahedron, 65(34), 7023-7037 (2009)
Scott T Moe et al.
Bioorganic & medicinal chemistry, 17(8), 3072-3079 (2009-03-31)
Botulinum neurotoxin elicits its paralytic activity through a zinc-dependant metalloprotease that cleaves proteins involved in neurotransmitter release. Currently, no drugs are available to reverse the effects of botulinum intoxication. Herein we report the design of a novel series of mercaptoacetamide
Recent advances in the chemistry of ethoxycarbonyl isothiocyanate and related compounds.
George B and Papadopoulos EP
Journal of Heterocyclic Chemistry, 20(5), 1127-1142 (1983)
Convenient synthesis of some new pyrazolo [5, 1-c] triazines, isoxazolo [3, 4-d] pyrimidine and pyridine derivatives containing benzofuran moiety.
Abdelhamid AO, et al
European Journal of Chemistry, 3(2), 129-137 (2012)
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