Chemistry informtion about Dymron (CAS NO.42609-52-9) is:
IUPAC Name: 1-(4-Methylphenyl)-3-(2-Phenylpropan-2-Yl)Urea
Synonyms: 1-(alpha,apha-Dimethylbenzyl)-3-(4-methylphenyl)urea ; Daimuron [ISO] ; BRN 2855249 ; Daimuron ; Dimuron ; Dymrone ; K 223 ; N-(4-Methylphenyl)-N'-(1-methyl-1-phenylethyl)urea ; N-(alpha,alpha-Dimethylbenzyl)-N(sup 1)-p-tolylurea ; SK 23 ; SK 23 (herbicide) ; Shouron ; Showrone ; Urea, N-(4-methylphenyl)-N'-(1-methyl-1-phenylethyl)- 
Molecular Weight: 268.3535 [g/mol]
Molecular Formula: C₁₇H₂₀N₂O
XLogP3-AA: 3.4
H-Bond Donor: 2
H-Bond Acceptor: 1 
Density: 1.108 g/cm³
Flash Point: 134 °C
Boiling Point: 394.4 °C at 760 mmHg
Vapour Pressure: 1.99E-06 mmHg at 25°C 
Enthalpy of Vaporization: 64.44 kJ/mol
Storage temp.: 0-6°C
Following is the molecular structure of Dymron (CAS NO.42609-52-9) is:

 Dymron (CAS NO.42609-52-9) can be used as novel substituted urea herbicides. Whether in light or secretly, the germination of sensitive plants have a strong inhibitory effect, so this product does not belong to an inhibitor of photosynthesis. The products from the plant roots can significantly inhibit the elongation of the roots and underground stems, and thus to control the growth of aerial parts, so its role is rather late in efficiency. With the effects of Cyperaceae weeds can be safely Control in rice, cotton, corn, soybeans and other crops of the profiled Koe-leria cristata, Scirpus grass, fescue to good effect.

Mildly toxic by ingestion and subcutaneous routes. When heated to decomposition it emits toxic fumes of NO_x.

P-urea method
P-urea preparation of sodium cyanate with the reaction of p-toluidine hydrochloride solution to control the reaction temperature is 30°C, a little too much sodium cyanate, urea obtained for toluene. Urea, sodium cyanate can be made with calcined sodium carbonate.
Preparation of chloro-isopropylbenzene 2 - phenyl-propene in acetonitrile solvent with hydrogen chloride addition, the introduction of chlorine atom side chain to produce chlorinated cumene.
Herbicide-long synthesis of p-cumene role of urea and chloride, synthetic herbicide lung. Join toluene urea 0.15mol, chloride, cumene 0.1mol, α-methyl styrene 48g and acetonitrile 160g, at 40 °C stirring reaction 6h, put it aside at room temperature, separation of crystals 32g, yield 80%.
α, α-dimethyl benzyl isocyanate France
Law is the α, α-2-methyl chloride in non-aqueous organic solvents and metal chloride catalysts in the presence of sodium cyanate reacted with α, α-dimethyl benzyl isocyanate, filtered to remove sodium chloride by-product , and then with the addition of p-toluidine obtained a good yield of herbicide-lung. Such as: in the reactor by adding ethyl acetate 50mL, 90% sodium cyanate 6.5g (90mmol), zinc chloride (0.5mol), pyridine (1mmol), stirring heated to 50°C, and then join the α, α-2 Methyl chloride 7.73g (50mmol) at 50 °C reaction 1h. Obtained α, α-dimethyl benzyl isocyanate. α, α-dimethyl benzyl isocyanate, and p-toluidine in toluene or chlorobenzene in addition, the almost quantitative yield of herbicide-lung.

 Dymron (CAS NO.42609-52-9) is a white needle-like crystal.