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Urea, [(4-nitrophenyl)methyl]-, also known as 1-(4-Nitrophenyl)methylurea or PNMU, is an organic compound with the chemical formula C8H9N3O3. It is a derivative of urea, where one hydrogen atom is replaced by a 4-nitrophenylmethyl group. Urea, [(4-nitrophenyl)methyl]- is a white crystalline solid and is used as a chemical intermediate in the synthesis of various pharmaceuticals and agrochemicals. PNMU is known for its reactivity and can undergo various chemical transformations, making it a valuable building block in organic chemistry. It is also used as a reagent in the detection of certain enzymes, such as urease, due to its ability to form a yellow complex upon hydrolysis.

18740-35-7

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18740-35-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18740-35-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,7,4 and 0 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 18740-35:
(7*1)+(6*8)+(5*7)+(4*4)+(3*0)+(2*3)+(1*5)=117
117 % 10 = 7
So 18740-35-7 is a valid CAS Registry Number.

18740-35-7Relevant academic research and scientific papers

N-Nitrosated N-hydroxyguanidines are nitric oxide-releasing diazeniumdiolates

Southan, Garry J.,Srinivasan, Aloka,George, Clifford,Fales, Henry M.,Keefer, Larry K.

, p. 1191 - 1192 (1998)

N-Hydroxyguanidines can be nitrosatively converted to zwitterionic diazeniumdiolates of crystallographically-confirmed structure H2N+=C[NHR][N(O)NO]-, whose hydrolytic dissociation at physiological pH leads to both NO and N2O; the results appear to account for the formation of the 'potential intercellular nitric oxide carrier' produced on exposing NG- hydroxy-L-arginine (a metabolic intermediate in mammalian NO biosynthesis) to aerobic NO.

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