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Urea, N'-[2-(diphenylamino)ethyl]-N,N-diphenyl-, also known as N,N-Diphenyl-N'-[2-(diphenylamino)ethyl]urea or DPA-urea, is an organic compound with the chemical formula C25H23N3O. It is a derivative of urea, featuring a diphenylaminoethyl group attached to the nitrogen atom. Urea, N'-[2-(diphenylamino)ethyl]-N,N-diphenyl- is characterized by its white crystalline appearance and is soluble in organic solvents. DPA-urea is primarily used as a photostabilizer in the plastics industry, particularly for polyolefins, to prevent degradation caused by exposure to light and heat. It functions by absorbing harmful ultraviolet radiation and dissipating the energy as heat, thereby protecting the material from damage. The compound's effectiveness in stabilizing plastics makes it a valuable additive in various applications, including automotive, construction, and packaging industries.

66385-64-6

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66385-64-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66385-64-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,3,8 and 5 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 66385-64:
(7*6)+(6*6)+(5*3)+(4*8)+(3*5)+(2*6)+(1*4)=156
156 % 10 = 6
So 66385-64-6 is a valid CAS Registry Number.

66385-64-6Downstream Products

66385-64-6Relevant academic research and scientific papers

Reactions with Azirridines, 36 Arene Hydrides 2 SN2 and SET Reactions of N-Acylaziridines with Diphenylmethanide and "Naphthalene Hydride" (Anion of Dihydronaphthalene)

Woderer, Anton,Stamm, Helmut

, p. 2050 - 2054 (2007/10/02)

Diphenylmethane is incompletely deprotonated by sodium naphthalenide in THF so that some "naphthalene hydride" 4 (anion of 1,4-dihydronaphthalene) remains present in the deprotonation equilibrium.The generated diphenylmethanide anion 3a reacts with the N-acylaziridines 6a-c to form the expected amidoethyl derivatives 7a-c in yields of less than 50percent.The formation of by-products from 6b and 6c can be rationalized on the basis of classic ionic mechanisms.However, for 6a the by-product N-ethylbenzamide clearly points to a SET mechanism with "naphthalene hydride" 4 as the electron source and with the radical 8 as a hydrogen source.

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