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4-Aminoacetophenone 99-92-3

CasNo：99-92-3
Molecular Formula：
Purity：
Molecular Weight：

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Product Details

99-92-3 Properties

Molecular Formula:C8H9NO
Molecular Weight:135.166
Appearance/Colour:slightly yellow to brown crystalline powder
Vapor Pressure:0.00158mmHg at 25°C
Melting Point:103-107 °C(lit.)
Refractive Index:1.571
Boiling Point:294.8 °C at 760 mmHg
PKA:2.17±0.10(Predicted)
Flash Point:132.1 °C
PSA：43.09000
Density:1.096 g/cm³
LogP:2.05260

99-92-3 Usage

Description

4-Aminoacetophenone is in the form of yellow needle-like crystals, with a melting point of 106°C, a boiling point of 293-295°C, and 195-200°C (2kPa). Soluble in hot water, soluble in alcohol, ether, dilute hydrochloric acid and dilute sulfuric acid, it is slightly soluble in benzene and cold water. Has a special pleasant fragrance. It can be used as a pharmaceutical intermediate.

Synthesis

Through a Williamson ether synthesis method and Smiles rearrangement reaction, benzamide compounds are produced, then the 4-aminoacetophenone preparation is finished after hydrolysis.

Applications

4′-Aminoacetophenone, is used in pharmaceuticals, medicines and other organic products. It is also used as a reagent for the photometric determination of Ce. As pharmaceutical intemediate or in the determination of palladium and vitaminB1.

Applications

A novel utilization of aminophenone derivative in toxicology, for treating intoxications with cyanogenic toxic substances.

Notes

Store in cool place. Keep container tightly closed in a dry and well-ventilated place. acids, Incompatible to Acid chlorides, Acid anhydrides, Chloroformates, Strong oxidizing agents, Strong reducing agents. Stable under ordinary conditions.

Chemical Properties

slightly yellow to brown crystalline powder

Uses

A novel utilization of aminophenone derivative in toxicology, for treating intoxications with cyanogenic toxic substances.

Uses

4'-Aminoacetophenone, is used in pharmaceuticals, medicines and other organic products. It is also used as a reagent for the photometric determination of Ce. As pharmaceutical intemediate or in the determination of palladium and vitaminB1.

Uses

4-Aminoacetophenone is a novel utilization of aminophenone derivative in toxicology used for treating intoxications with cyanogenic toxic substances.

Synthesis Reference(s)

Chemical and Pharmaceutical Bulletin, 34, p. 2013, 1986 DOI: 10.1248/cpb.34.2013Tetrahedron Letters, 27, p. 4687, 1986 DOI: 10.1016/S0040-4039(00)85038-8

General Description

4′-Aminoacetophenone, commonly known as Clenbuterol Impurity D, is a related compound of sympathomimetic amine drug clenbuterol. Clenbuterol belongs to a group of compounds referred to as β-2-agonists and is generally used in the treatment of asthma.Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.

Safety Profile

Poison by ingestion and intraperitoneal routes. When heated to decomposition it emits toxic fumes of NO,. See also AROMATIC AMINES

Purification Methods

It is soluble in hot H2O. UV (EtOH) has max 403nm (log 4.42) [Johnson J Am Chem Soc 75 2720 1953]. [Vandenbelt Anal Chem 26 726 1954.] The 2,4-dinitrophenylhydrazone has m 266-267o (from CHCl3 or EtOH) with 403nm (log 4.42), and the max semicarbazone has m 193-194o(dec)(from MeOH). The hydrochloride has m 98o(dec)(from H2O). [Beilstein 14 IV 100.]

Toxicity evaluation

Harmful if swallowed. Causes eye, skin, and respiratory tract irritation. May cause methemoglobinemia.

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The electrochemical behavior of a series of S-phenacyl-O-ethyl-xanthates (O-ethyl-dithiocarbonate acetophenone derivatives) in hydroalcoholic (MeOH/H2O 4:1) and anhydrous media (ACN/TBAPF6) using carbon electrodes was studied. Cyclic voltammetry showed in hydroalcoholic media only two cathodic waves, whereas in ACN one anodic and two cathodic waves were present. The first cathodic wave corresponded to the reduction of the phenylketone group, whereas the first anodic was attributed to the xanthate unit. Macroelectrolysis on graphite and vitreous carbon at anodic and cathodic potentials, let us to explore the synthetic potential of this electrochemical reactions. With some compounds in hydroalcoholic media and using carbon electrodes, polymeric material was deposited on the electrode impeding the reaction; this deposit was characterized by AFM and SEM-EDS. The electroreduction on Ti electrode overcome this problem and gave the corresponding acetophenones (>95%). On the other hand, in ACN, small quantities of the dimeric 1,4-dicarbonyl compounds X-PhCOCH2CH2COPh-X (7–15%), as well as the corresponding acetophenones (ca. 50%) were isolated. Oxidation macroelectrolysis showed a very complicated transformation without synthetic value. The reaction mechanism for the reduction and the homolytic dissociation into the phenacyl radical was supported by DFT calculations.

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