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439120-99-7

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439120-99-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 439120-99-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,9,1,2 and 0 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 439120-99:
(8*4)+(7*3)+(6*9)+(5*1)+(4*2)+(3*0)+(2*9)+(1*9)=147
147 % 10 = 7
So 439120-99-7 is a valid CAS Registry Number.

439120-99-7Downstream Products

439120-99-7Relevant articles and documents

Solid-phase synthesis of disubstituted 1,3-dihydro-2H-imidazol-2-ones

Patek,Weichsel,Drake,Smrcina

, p. 1322 - 1324 (2007/10/03)

An efficient and straightforward solid-phase synthesis of sulfonylimidazolones 2a-g is described. Our design was directed toward obtaining molecules for a general library development and incorporates functionalities that fulfill lead-like criteria. The synthesis was realized with the use of SPOS in fair to good yields and purity. Monitoring and quantitation of intermediates and final products were performed by the use of LCMS and NMR spectroscopy.

Generality and scope of the synthesis of 2-arylpyrrolo[3,4-b] quinoxaline-1,3-diones from 2,3-dichloro-N-arylmaleimides. II

Hanaineh-Abdelnour, Leila,Salameh, Badr A.

, p. 2931 - 2940 (2007/10/03)

Nucleophilic substitution of 2,3-dichloro-N-arylmaleimides (1) and (2) with a series of arylamines gives 2-arylamino-3-chloro-N-arylmaleimides (3) and (4), respectively. When 4 is treated with sodium azide at room temperature, it cyclizes to the 2-(p-methoxyphenyl)pyrrolo[3,4-b]quinoxaline- 1,3-diones (5). Under the same conditions, the 2-(p-nitrophenyl) analogue (3) fails to cyclize. Ring closure is also subject to the steric and electronic effects of substituents in the nucleophile.

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