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Xanthene, 9-(4-nitrophenyl)methylene, also known as 9-(4-nitrobenzylidene)xanthene, is an organic compound with the chemical formula C20H13NO3. It is a derivative of xanthene, a tricyclic aromatic hydrocarbon, with a 4-nitrophenyl group attached to the 9-position through a methylene bridge. xanthene, 9-(4-nitrophenyl)methylene exhibits yellow crystalline solid properties and is characterized by its distinct chemical structure, which includes a xanthene core with a nitro-substituted benzylidene group. It is primarily used in research and development, particularly in the synthesis of various organic compounds and as a building block in the preparation of complex molecules. Due to its chemical reactivity and potential applications, xanthene, 9-(4-nitrophenyl)methylene, is a compound of interest in the field of organic chemistry.

75128-87-9

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75128-87-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75128-87-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,1,2 and 8 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 75128-87:
(7*7)+(6*5)+(5*1)+(4*2)+(3*8)+(2*8)+(1*7)=139
139 % 10 = 9
So 75128-87-9 is a valid CAS Registry Number.

75128-87-9Downstream Products

75128-87-9Relevant academic research and scientific papers

Synthesis of benzannulated heterocycles by twofold Suzuki-Miyaura couplings of cyclic diarylborinic acids

Dimitrijevic, Elena,Cusimano, Madeline,Taylor, Mark S.

, p. 1391 - 1394 (2014/03/21)

Two-fold Suzuki-Miyaura cross-couplings of cyclic diarylborinic acids are described. This novel annulation method enables the synthesis of benzo-fused heterocycles from dihaloarenes or gem-dibromoolefins.

Organic Reactive Intermediates: Part XI - Preparation and Reactions of Xanthenyl Ylids

Handoo, Kishan L.,Kaul, Anju

, p. 1 - 2 (2007/10/02)

Two new xanthenyl ylids, viz. triphenylphosphoniumxanthen-9-ylid and triphenylphosphoniumthioxanthen-9-ylid have been prepared.The former undergoes normal Wittig reaction with a number of carbonyl compounds yielding olefins.

Studies on Betaine Decomposition of Arsonium Ylides

Tewari, R. S.,Suri, S. K.,Gupta, K. C.

, p. 95 - 98 (2007/10/02)

A systematic study on the nature of decomposition of betaine formed by nucleophilic attack of semistabilized arsonium ylides on thiocarbonyl substrates has been carried out.A series of substituted benzylidenetriphenylarsenanes have been generated from their corresponding salts and condensed with few cyclic thioketones to yield exocyclic olefins as exclusive products.The non-availability of thioepoxides indicates that the mode of decomposition of such type of betaines is quite analogous to the betaine formed by phosphonium ylides.The structure of the products have been assigned by IR and NMR spectral studies. - Keywords: Betaine, Arsonium Ylides

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