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Formaldehyde, nitro-, phenylhydrazone, also known as 4-nitrophenylhydrazine, is an organic compound with the chemical formula C6H7N3O2. It is a derivative of phenylhydrazine, where a nitro group (-NO2) is attached to the benzene ring. This yellow crystalline solid is primarily used as a reagent in chemical analysis, particularly for the detection and determination of aldehydes and ketones. It forms a colored complex with these compounds, which can be used to identify their presence in a sample. The compound is also employed in the synthesis of various pharmaceuticals and dyes. Due to its reactivity and potential health risks, it is important to handle 4-nitrophenylhydrazine with care, as it is classified as a hazardous substance.

622-11-7

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622-11-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 622-11-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,2 and 2 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 622-11:
(5*6)+(4*2)+(3*2)+(2*1)+(1*1)=47
47 % 10 = 7
So 622-11-7 is a valid CAS Registry Number.

622-11-7Relevant academic research and scientific papers

Palladium and Copper Cocatalyzed Intermolecular Cyclization Reaction: Synthesis of 5-Aminopyrazole Derivatives

Ma, Chaowei,Wen, Ping,Li, Jihui,Han, Xu,Wu, Zhaoyang,Huang, Guosheng

, p. 1073 - 1077 (2016)

A novel and efficient palladium and copper co-catalyzed intermolecular cyclization of acetonitriles with hydrazones has been developed for the synthesis of 5-aminopyrazoles through C-C and C-N bond formation. The reaction has the advantages of easily avai

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