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Urea, N,N'-bis([1,1'-biphenyl]-4-yl)-, also known as 4,4'-Biphenyldiylbis(urea) or BPDU, is an organic compound with the chemical formula C17H16N2O2. It is a white crystalline solid that is soluble in water and various organic solvents. BPDU is a derivative of urea, where two urea molecules are connected through a biphenyl-4-yl group, forming a rigid, planar structure. Urea, N,N'-bis([1,1'-biphenyl]-4-yl)- is of interest in materials science and chemistry due to its potential applications in the synthesis of polymers, as a ligand in coordination chemistry, and in the development of new materials with specific properties, such as liquid crystals or nonlinear optical materials. Its unique structure also makes it a subject of study for understanding the interactions between urea groups and aromatic systems.

95745-38-3

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95745-38-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 95745-38-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,5,7,4 and 5 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 95745-38:
(7*9)+(6*5)+(5*7)+(4*4)+(3*5)+(2*3)+(1*8)=173
173 % 10 = 3
So 95745-38-3 is a valid CAS Registry Number.

95745-38-3Relevant academic research and scientific papers

Concise and Additive-Free Click Reactions between Amines and CF3SO3CF3

Song, Hai-Xia,Han, Zhou-Zhou,Zhang, Cheng-Pan

supporting information, p. 10907 - 10912 (2019/08/02)

Trifluoromethyl trifluoromethanesulfonate has proved to be an excellent reservoir of difluorophosgene and a promising click ligation for amines in the preparation of urea derivatives, heterocycles, and carbamoyl fluorides under metal- and additive-free conditions. The reactions are rapid, efficient, selective, and versatile, and can be performed in benign solvents, giving products in excellent yields with minimal efforts for purification. The characteristics of the reactions meet the requirements of a click reaction. The use of trifluoromethyl trifluoromethanesulfonate as a click reagent is advantageous over other “CO” sources (e.g., TsOCF3, PhCO2CF3, CsOCF3, AgOCF3, and triphosgene) because this reagent is readily accessible; easy to scale up; and highly reactive, even under metal- and additive-free conditions. It is anticipated that CF3SO3CF3 will be increasingly as important as SO2F2 as a click agent in future drug design and development.

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