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2157-52-0 Usage

Synthesis Reference(s)

Canadian Journal of Chemistry, 35, p. 180, 1957 DOI: 10.1139/v57-027

Check Digit Verification of cas no

The CAS Registry Mumber 2157-52-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,5 and 7 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 2157-52:
70 % 10 = 0
So 2157-52-0 is a valid CAS Registry Number.

2157-52-0 Well-known Company Product Price

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  • (Code)Product description
  • CAS number
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  • Alfa Aesar

  • (L03950)  9-Fluorenone oxime, 98+%   

  • 2157-52-0

  • 5g

  • 360.0CNY

  • Detail
  • Alfa Aesar

  • (L03950)  9-Fluorenone oxime, 98+%   

  • 2157-52-0

  • 25g

  • 1445.0CNY

  • Detail



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 11, 2017

Revision Date: Aug 11, 2017


1.1 GHS Product identifier

Product name N-fluoren-9-ylidenehydroxylamine

1.2 Other means of identification

Product number -
Other names Fluorenone-9-oxime

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:2157-52-0 SDS

2157-52-0Relevant articles and documents


, p. 6749,6751 (1969)

Oxime esters of anthraquinone as photo-induced DNA-cleaving agents for single- and double-strand scissions

Hwu, Jih Ru,Tsay, Shwu-Chen,Hong, Shih Chin,Leu, Yi-Jing,Liu, Chih-Fen,Chou, Shang-Shing P.

, p. 2957 - 2960 (2003)

Anthraquinone-O-9-(4-cyanobenzoyl)oxime (13) with binding constant of 4.49×104 M-1 exhibited single-strand scission of DNA at the concentration of 10 μM and double-strand scission at 50 μM upon UV irradiation.

Nickel-Catalyzed NO Group Transfer Coupled with NOxConversion

Padmanaban, Sudakar,Choi, Jonghoon,Vazquez-Lima, Hugo,Ko, Donghwi,Yoo, Dagyum,Gwak, Jinseong,Cho, Kyung-Bin,Lee, Yunho

supporting information, p. 4585 - 4593 (2022/03/02)

Nitrogen oxide (NOx) conversion is an important process for balancing the global nitrogen cycle. Distinct from the biological NOx transformation, we have devised a synthetic approach to this issue by utilizing a bifunctional metal catalyst for producing value-added products from NOx. Here, we present a novel catalysis based on a Ni pincer system, effectively converting Ni-NOx to Ni-NO via deoxygenation with CO(g). This is followed by transfer of the in situ generated nitroso group to organic substrates, which favorably occurs at the flattened Ni(I)-NO site via its nucleophilic reaction. Successful catalytic production of oximes from benzyl halides using NaNO2 is presented with a turnover number of >200 under mild conditions. In a key step of the catalysis, a nickel(I)-?NO species effectively activates alkyl halides, which is carefully evaluated by both experimental and theoretical methods. Our nickel catalyst effectively fulfills a dual purpose, namely, deoxygenating NOx anions and catalyzing C-N coupling.

Synthesis of hydroxyethyl methyl morpholinium azide (HEM Morph)N3: A highly efficient new task specific azide-based ionic liquid and its dual application as an azide source and media for synthesis of some novel aromatic O-oxime ethers-1,2,3-triazole conjugates as a potential antihistaminic agents

Rad, Mohammad Navid Soltani,Behrouz, Somayeh,Saremi, Hossein,Mohammadtaghi-Nezhad, Javad

, (2019/12/27)

The synthesis, characterization and application of hydroxyethyl methyl morpholinium azide (HEM Morph)N3 as a new azide-based ionic liquid (ABIL) has been described. (HEM Morph)N3 is used as a source of azide and reaction media for three components ‘Click’ Huisgen cycloaddition reaction between O-propargyl oxime ether and alkyl bromide to acquire novel aromatic O-oxime ethers-1,2,3-triazole conjugates as potential antihistaminic agents in good yields. The influence of parameters like temperature, amount of IL, type of azide-based ionic liquids and its reusability is investigated. The (HEM Morph)N3 is proved to be an efficient, thermally stable, inexpensive and recyclable azide-based ionic liquid which can be easily synthesized and used as both azide's source and reaction media for ‘Click’ Huisgen cycloaddition reaction.

Access to Cyanoimines Enabled by Dual Photoredox/Copper-Catalyzed Cyanation of O-Acyl Oximes

Wei, Ziyan,Yu, Shouyun,Zhang, Ai Hua,Zhang, Hao

supporting information, p. 7315 - 7320 (2020/10/02)

An efficient strategy for the synthesis of pharmaceutically important and synthetically useful cyanoimines, as well as cyanamides, has been described. This strategy is enabled by dual photoredox/copper-catalyzed cyanation of O-acyl oximes or O-acyl hydroxamides. This state of the art protocol for cyanoimines and cyanamides features readily available starting materials, mild reaction conditions, good functional group tolerance, and operational simplicity. The resultant cyanoimines can be transformed into structurally diverse and functionally important N-containing heterocycles.

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