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Urea, N-(3-methylphenyl)-N'-(4-methylphenyl)-, also known as 4,4'-dimethyl-3,3'-diphenylurea or DMDPU, is an organic compound with the chemical formula C15H16N2O. It is a white crystalline solid that is soluble in organic solvents and has a melting point of approximately 150-152°C. Urea, N-(3-methylphenyl)-N'-(4-methylphenyl)- is primarily used as a crosslinking agent in the production of polyurethane foams, providing improved mechanical properties and dimensional stability to the final product. DMDPU is also employed as a flame retardant in various polymer applications, enhancing their resistance to ignition and reducing the spread of flames. Its chemical structure features two methyl-substituted phenyl groups connected through a urea linkage, which contributes to its reactivity and utility in these applications.

13143-30-1

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13143-30-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 13143-30-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,1,4 and 3 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 13143-30:
(7*1)+(6*3)+(5*1)+(4*4)+(3*3)+(2*3)+(1*0)=61
61 % 10 = 1
So 13143-30-1 is a valid CAS Registry Number.

13143-30-1Downstream Products

13143-30-1Relevant academic research and scientific papers

An Improved Synthesis of Urea Derivatives from N -Acylbenzotriazole via Curtius Rearrangement

Agrahari, Anand K.,Singh, Anoop S.,Singh, Sumit K.,Tiwari, Vinod K.,Yadav, Mangal S.

, p. 3443 - 3450 (2019)

The good leaving tendency of the benzotriazole moiety has been exploited for the synthesis of symmetric, unsymmetric, N -acyl, and cyclic ureas in good yields from N -acylbenzotriazoles by treating the latter with various amines in the presence of TMSN 3 /Et 3 N in a sealed tube. The salient features of the devised protocol includes the high-yield, mild, metal-free, one-pot reaction conditions, and short reaction time. Furthermore, in many cases, no column chromatography is required for the purification.

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