4-Phenylurazole
- Product Name
- 4-Phenylurazole
- CAS No.
- 15988-11-1
- Chemical Name
- 4-Phenylurazole
- Synonyms
- 4-Phenylurazol;AURORA KA-3647;4-PHENYLURAZOLE;4-phenyl urea yl;Urazole, 4-phenyl-;4-Phenylurazole>4-PHENYLURAZOLE 99.0%;4-Phenylurazole, 98+%;Calcitriol Impurity 5;Bicarbamimide, N-phenyl-
- CBNumber
- CB2720962
- Molecular Formula
- C8H7N3O2
- Formula Weight
- 177.16
- MOL File
- 15988-11-1.mol
4-Phenylurazole Property
- Melting point:
- 207-209 °C (lit.)
- Boiling point:
- 309.07°C (rough estimate)
- Density
- 1.3393 (rough estimate)
- refractive index
- 1.6500 (estimate)
- storage temp.
- Inert atmosphere,2-8°C
- pka
- 5.43±0.30(Predicted)
- form
- powder to crystal
- color
- White to Almost white
- BRN
- 163361
- InChIKey
- GOSUFRDROXZXLN-UHFFFAOYSA-N
- CAS DataBase Reference
- 15988-11-1(CAS DataBase Reference)
- NIST Chemistry Reference
- 4-Phenylurazole(15988-11-1)
- EPA Substance Registry System
- 1,2,4-Triazolidine-3,5-dione, 4-phenyl- (15988-11-1)
Safety
- Safety Statements
- 22-24/25
- WGK Germany
- 3
- TSCA
- Yes
- HS Code
- 29339990
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H332Harmful if inhaled
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- 188956
- Product name
- 4-Phenylurazole
- Purity
- 98%
- Packaging
- 25g
- Price
- $113
- Updated
- 2024/03/01
- Product number
- P1160
- Product name
- 4-Phenylurazole
- Purity
- >98.0%(T)
- Packaging
- 5g
- Price
- $35
- Updated
- 2024/03/01
- Product number
- P1160
- Product name
- 4-Phenylurazole
- Purity
- >98.0%(T)
- Packaging
- 25g
- Price
- $88
- Updated
- 2024/03/01
- Product number
- L00255
- Product name
- 4-Phenylurazole, 98+%
- Packaging
- 5g
- Price
- $27.65
- Updated
- 2024/03/01
- Product number
- L00255
- Product name
- 4-Phenylurazole, 98+%
- Packaging
- 25g
- Price
- $90.65
- Updated
- 2024/03/01
4-Phenylurazole Chemical Properties,Usage,Production
Description
4-phenylurazole is a kind of laboratory chemicals used for the manufacturing of some substances. It can be used as the precursor to the Diels-Alder trapping agent, 4-phenyl-1, 2, 4-triazoline-3, 5-Dione. Its derivative, azo dyes, has wide applications in dyes industry. In the presence of phosgene, terephthaloyl chloride and epichlorohydrin, it can be polymerized to yield insoluble polymer.
Chemical Properties
white to light beige cryst. powder or granules
Uses
Precursor to the Diels-Alder trapping agent, 4-phenyl-1,2,4-triazoline-3,5-dione.1,2,3
General Description
4-Phenylurazole undergoes oxidation in the presence of NO2-N2O4 to yield 4-phenyl-1,2,4-trizoline-3,5-dione. It undergoes acetylation reaction with excess acetyl chloride in N,N-dimethylacetamide solution. It polymerizes in the presence of phosgene, terephthaloyl chloride and epichlorohydrin to yield insoluble polymer. It is precursor to the Diels-Alder trapping agent, 4-phenyl-1,2,4-triazoline-3,5-dione. This urazole was recently demonstrated in the traceless, chemoselective labeling of peptides and proteins through electrochemical tyrosine-click (e-Y-CLICK) chemistry.
Purification Methods
Crystallise 4-phenylurazole from water or 95% EtOH. Dissolve 35g in 80mL of boiling 95% EtOH and on cooling 90-95% is recovered with m 209-210o. It has IR with 1685 and 3120cm-1. [Cookson et al. Org max Synth 51 121 1971, Beilstein 26 I 64, 26 III/IV 540.]
References
http://www.sigmaaldrich.com/catalog/product/aldrich/188956?lang=en®ion=US&gclid=EAIaIQobChMI6r7k0eu71gIV1IZoCh0nwgLjEAAYASAAEgI0tvD_BwE
http://nopr.niscair.res.in/handle/123456789/21799
4-Phenylurazole Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 4-Phenylurazole manufacturers
- Product
- 4-Phenylurazole 15988-11-1
- Price
- US $9.80/KG
- Min. Order
- 1g
- Purity
- ≥99%
- Supply Ability
- 100kg
- Release date
- 2020-01-08