104599-36-2

Basic information

• Product Name: 3,5-dibromo-4-nitro-1H-pyrazole
• Synonyms: 3,5-dibromo-4-nitro-1H-pyrazole;3,5-Dibromo-4-nitropyrazole;3,5-Dibromo-4-Nitro-1H-Pyrazole 3,5-Dibromo-4-Nitro-1H-Pyrazole
• CAS NO: 104599-36-2
• Molecular Formula: C₃HBr₂N₃O₂
• Molecular Weight: 270.88
• Mol File: 104599-36-2.mol
• Article Data: 6

Chemical Properties

• Melting Point: 168-170°
• Boiling Point: 328.451 °C at 760 mmHg
• Flash Point: 152.442 °C
• Appearance: /
• Density: 2.575g/cm³
• Vapor Pressure: 0mmHg at 25°C
• Refractive Index: 1.701
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C
• PKA: 3.39±0.50(Predicted)
• CAS DataBase Reference: 3,5-dibromo-4-nitro-1H-pyrazole(CAS DataBase Reference)
• NIST Chemistry Reference: 3,5-dibromo-4-nitro-1H-pyrazole(104599-36-2)
• EPA Substance Registry System: 3,5-dibromo-4-nitro-1H-pyrazole(104599-36-2)

Safety Data

• HazardClass: IRRITANT
• Hazardous Substances Data: 104599-36-2(Hazardous Substances Data)

Usage

General Description

3,5-dibromo-4-nitro-1H-pyrazole is a chemical compound with the molecular formula C3HBr2N3O2. It is a pyrazole derivative with two bromine atoms at the 3 and 5 positions, and a nitro group at the 4 position. 3,5-dibromo-4-nitro-1H-pyrazole is used as a building block in the synthesis of pharmaceuticals and agrochemicals. It is also used in organic synthesis as a reagent and intermediate. 3,5-dibromo-4-nitro-1H-pyrazole is known for its high reactivity and is used in various research and industrial applications.

InChI:InChI=1/C3HBr2N3O2/c4-2-1(8(9)10)3(5)7-6-2/h(H,6,7)

Upstream product

• 2075-46-9 4-nitro-1H-pyrazole 
• 104599-40-8 1-nitro-3,4,5-tribromo-1H-pyrazole 
• 71-43-2 benzene 
• 17635-44-8 3,4,5-tribromo-1H-pyrazole 

Downstream Products

• 452080-93-2 1,3-bis-(3,5-dibromo-4-nitropyrazol-1-yl-methyl)benzene 
• 452082-35-8 3,5-dibromo-1-propyl-4-nitro-1H-pyrazole 
• 155601-03-9 1-benzyl-3,5-dibromo-4-nitro-1H-pyrazole 
• 155600-99-0 3,5-di-bromo-1-methyl-4-nitropyrazole 
• 1347628-04-9 9-bromo-12-(4-methoxyphenyl)-8-nitro-12H-naphtho[1,2-e]pyrazolo[5,1-b][1,3]oxazine 

Relevant articles and documents

Effect of "anomalous" electrochemical halogenation of pyrazoles and its reasons

-

Diaminopyrazole derivatives and their use for oxidation dyeing of keratinous fibres

The invention relates to diaminopyrazole derivatives having the following structure (I), wherein R1 represents an alkyl or alkenyl radical bearing at least one substituent selected from among OR, NRR′, SR, SOR, SO2R, COOR, CONRR′, PO(OH)2, SO3X, NHCONRR, a non-cationic heterocycle, an aryl, a halogen. R2 and R3 are different from H and represent, independently of each other, an alkyl or alkenyl group; R2 and R3, together with the nitrogen atom to which they are attached, can form a heterocycle possibly comprising at least one other heteroatom selected from among N, O and S; R2 and R3 or the heterocycle that they form with the nitrogen to which they are attached can be substituted by at least one substituent defined above. The identical or different R, R′ groups are selected from a hydrogen atom, an alkyl or alkenyl group; R and R′, together with the nitrogen atom to which they are attached, can form a heterocycle having at least 4 ring members that can contain at least one additional heteroatom selected from among O, N and S. X represents a hydrogen, an alkaline-earth or alkali metal atom or an ammonium group. The invention also relates to the dyeing compositions and the dyeing methods using same.

Diaminopyrazole compounds and the use thereof in the oxidation dyeing of keratinous fibres

The invention relates to novel diaminopyrazole compounds having formula (I): wherein R1 represents a linear or branched C4-C5 alkyl or n-propyl group, or a linear or branched C3-C5 mono or polyhydroxy alkyl group, and the addition salts thereof with a physiologically acceptable acid. The invention also relates to the compositions containing such a compound for the dyeing of keratinous fibers and the method for using said compositions.