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4-Fluor-3-nitro-valerophenon, also known as 4-fluoro-3-nitro-α-tolualdehyde, is an organic compound characterized by its molecular formula C8H7FNO3. This chemical features a benzene ring with a fluorine atom at the 4th position, a nitro group at the 3rd position, and an aldehyde functional group attached to the methyl group at the 1st position. It is a yellow crystalline solid with a melting point of 54-56°C. 4-Fluor-3-nitro-valerophenon is primarily used as an intermediate in the synthesis of pharmaceuticals, agrochemicals, and other specialty chemicals. Due to its reactive functional groups, it is essential to handle 4-Fluor-3-nitro-valerophenon with care, as it may pose health risks and environmental concerns.

721-53-9

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721-53-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 721-53-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,2 and 1 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 721-53:
(5*7)+(4*2)+(3*1)+(2*5)+(1*3)=59
59 % 10 = 9
So 721-53-9 is a valid CAS Registry Number.

721-53-9Relevant academic research and scientific papers

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