P-Chlorophenyl urea

Synonym Chlorfenidim, CMU, Karmex, Lirobetarex, Monurex, Monurox, Rosuran, Telvar, Urox Chemical Name N,-(4-chlorophenyl)-Ar-Ar-dimethylurea l,l-dimethyl-3-(p-chlorophenyl)urea Uses herbicide also as sugar cane flowering suppressant. 

DIMETHYL-N -(4-CHLOROPHENYL)UREA 1,1-DIMETHYL-3-(p-CHLOROPHENYL)UREA HERBICIDES, MONURON KARMEX xMONURON HERBICIDE KARMEX W. MONURON HERBICIDE LIROBETAREX MONUREX MONURON MONUROX MONURUON MONUURON NCI-C02846 TELVAR TELVAR MONURON WEEDKILLER USAF P-8 USAF XR-41... 

C8H8CIN302 1-methyl-1-nitroso-3- p-chlorophenyl)urea 25355-61-7 310.15 25.990 1,2 13425 C8H802 2-hydroxy-5-methylbenzaldehyde 613-84-3 490.65 42.986 1,2... 

Dimethyl-3-(p-chlorophenyl) urea N,N-Dimethyl-N -(4-chlorophenyl) urea. See Monuron... 

Synonyms Chlorfenidim l-(4-Chlorophenyl)-3,3-dimethylurea l-(p-Chlorophenyl)-3,3-dimethylurea 3-(4-Chloropheny 1)-1,1 -dimethylurea 3 -(p-Chloropheny 1)-1,1 -dimethy-lurea A -(4-Chlorophenyl)-A, A -dimethylurea 7V-(4-Chlorophenyl)-A 7V-dimethylurea A -(p-Chlorophenyl)-7V,7V-dimethylurea CMU A, A -Dimethyl-7V -(4-chlorophenyl)urea A, A -Dimethyl-A -(p-chlorophenyl)urea Karmex Lirobetarex Monurex Monurox Mon-uuron NCI-C02846 Rosuran Telvar Telvar Monuron Weed Killer Urox USAF P-8 USAF XR-41. 

Typical procedure. N-(o-Cyanophenyl)-N -(p-chlorophenyl)urea 1505b [1136] To a solution of o-carbamoylphenylimino-triphenylphosphorane 1503 (1.0 g, 2.5 mmol) in dry dichloromethane (25 mL) was added p-chlorophenylisocyanate (384 mg, 2.5 mmol). The reaction mixture was stirred at room temperature for 24 h. The separated solid was then collected by filtration, washed with diethyl ether (2x5 mL), dried, and recrystallized from ethanol to give N-(o-cyanophenyl)-N -(p-chloro-phenyl)urea 1505b (604 mg, 89%) mp 230-231 °C. 

Metcalf, R.L., P.Y. Lu, and S. Bowlus. 1975. Degradation and environmental fate of l-(2,6-difluorobenzoyl)-3-(4-chlorophenyl) urea. Jour. Agricul. Food Chem. 23 359-364. 

Dimethyl-3-(2-naphthyl)urea 3-(o-Chlorophenyl)-1,1-dimethy lurea 3-(m-Chlorophenyl)-l, 1-dimethy lurea 3-(p-Chlorophenyl)-l, 1 -dimethy lurea 3-(3,4-Dichlorophenyl)-... 

Sltly sol in water and hydrocarbons. SYNS 3-(4-CHLOOR-FENYL)-l,l-DIMETHYLUREUM PUTCH) CHLORFENIDIM N-(p-CHLOROPHEN-YL)-N, N -DIMETH XUREA N -(4-CHLOROPHENYL)-N,N-DIMETHYLUREA l-(p-CHLOROPHENYL)-3,3-DLMETHYLURF.A 3-(4-CHLOROPHENYL)-l,l-DIMETHYLUREA I-(4-CHLORO PHENYL)-3,3-DIMETHYLUREE (FRENCH) 3-(4-CHLOR-PHENYL)-1,1-DIMETHYL-HARNSTOFF (GERMAN) 3-(4-CLORO-FENIL)-1,1-DIMETIL-UREA (ITALIAN) CMU NJ -... 

CHLOROPHENYL)-3-(2,6-DIFLUOROBENZOYL)UREA see CJV250 1 -(p-CHLOROPHENYL)-3,3-DIMETHYLUREA see CJX750... 

The most important substances of this group are l,l-dimethyl-3-phenylurea (fenuron, 5) 3-(4-chlorophenyl)-1,1-dimethylurea, (monuron, 6) 3-(3,4-dichlorophenyl)-1,1 -dimethylurea (diuron,7) 1,1 -dimethyl-3-(a,a,a-trifluoro-m-tolyl)urea (fluometuron, 8) l,l-dimethyl-3-( ,a,a-trifluoro-p-tolyl)urea (para-fluron, 9) 3-(3-chloro-/j-tolyl)-1,1-dimethylurea (chlortoluron, 10) 3-(3-chloro-4-methoxyphenyl)-l,l-dimethylurea (metoxuron, 11) 3-[(4-chlorophenoxy)phenyl]-... 

Aresin Arezin Arezine BRN 2212523 Caswell No. 207D 3-(4-Chlorophenyl)-1-methoxy-1-methylurea 3- 4-Chlorphenyl)-1-methoxy-1-methylharnstoff N-(4-Chloro-phenyl)-N -methoxy-N-methylurea EINECS 217-129-5 EPA Pesticide Chemical Code 207500 HOE 02747 HOE 2747 HSDB 5030 Monolinuron Monorotox Premalin Urea, 3-(p-chlorophenyl)-1-methoxy-1-methyl- Urea, N -(4-chlorophenyl)-N-methoxy-N-methyl-. Selective systemic herbicide used to control broad-leaved weeds and some annual grasses in vegetable crops such as potatoes and leeks. Crystals mp = 80-83" soluble in H2O (735 mg/l), organic solvents LD50 (rat orl) = 1660 mg/kg. Hoec/isf UK Ltd. 

AI3-29054 Astonex Benzamide, N-(((4-chlorophenyl)-amino)carbonyl)-2,6-difluoro- BRN 2152461 Caswell No. 346A 1-(4-Chlorophenyl)-3-(2,6-difluorobenzoyl)-urea Dimilin ENT-29054 Micromite Difluron DU 112307 Duphacid Largon OMS-1804 PDD 6040-1 PH-60-40 TH-6040 1-(p-Chlorophenyl)-3-(2,6-... 

The determination of the vapor pressure of various compounds was reviewed by Wiedemann (49). He discussed the determination of vapor pressure by TG techniques based on the Knudsen effusion method. The sample holder that was employed is illustrated in Chapter 3 (Figure 3.6). For some measurements, a Pyrex glass cell having a diameter of about 15 mm was used. Four organic compounds were studied p-chlorophenyl-AT. Af-dimethyl urea (Monuron. a herbicide), p-phenacetin, anthracene, and benzoic acid, in the temperature range of 250-400 K. The vapor-pressure curves of these compounds, in the range from 0 10 Torr, are shown in Figure 4.49. The AHs values calculated were Monuron. 27.4 p-phenacetin 27.6 anthracene, 20.1 and benzoic acid. 20.7 kcalmole. 

The same substrate (134) with urea gave 2-(6-p-chlorophenyl-2-oxo-5-phenyl-l,2,5,6-tetrahydropyrimidin-4-yl)-4-(3,4-dichlorophenyl)-l(277)-phthalazi-none (136, X = O) (HCl, EtOH, 95°C, 8 h 70%) or with thiourea gave 2-(6-p-chlorophenyl-5-phenyl-2-thioxo-l,2,5,6-tetrahydropyrimidin-4-yl)-4-(3,4-dichlorophenyl)-l(2H)-phthalazinone (136, X = S) (KOH, H2O, EtOH, reflux, 3h 85%). ... 

This would make dicyandiamide a material of only limited utility because there is a need for materials that cure at lower temperatures such as 250 F (121 C), The need was filled a number of years ago by materials such as the dimethylamine urea of p-chlorophenyl isocyanate which act as accelerators for the dicyandiamide cure by lowering the... 

Substituted ureas can be used for promoting a synergistic effect when curing epoxy resins with dicy. Earlier, 3-(p-chlorophenyl)-l,l-dimethylurea (Monuron made by DuPont) was popular [22,23], but it has now been withdrawn due to health hazards. 

Soil/Plant. In soils and plants, monuron is demethylated at the terminal nitrogen atom coupled with ring hydroxylation forming 3-(2-hydroxy-4-chlorophenyl)urea and 3-(3-hydroxy-4-chlorophei5rl)urea (Hartley and Kidd, 1987). Wallnoefer et al. (1973) reported that the soil microorganism japonicus degraded monuron 3-(p-chlorophei5rl)-l-... 

When treated with hydrochloric acid and an aqueous solution of sodium nitrite, iV-methyl-2-picolylamine gives 2-(iV-methyl-iV-nitroso)picolylamine. l-(p-Chlorophenyl)-3-(4-picolyl)urea (IX-292) results from the action of 4-aminomethylpyridine on p-chlorophenylisocyanate. Other ureas are similarly prepared (Table IX-88). 

Dialkyl- and diaiylcarbodiimides bearing qrdohexyl, phenyl, p-chlorophenyl, and p-ethoxyphenyl residues have been synthesized from the corresponding ureas with phosphorus pentoxide in pyridine, charged with sand, under reflux [1255]. DCC has been prepared this way within 2.25 h in 76% yield (see also Section 4.5.3.5, Table 4.48). 

What other light-independent partial reactions of photosynthesis could we seek in maize etioplasts Jagendorf and Uribe demonstrated that thylakoids of spinach form ATP from ADP and inorganic phosphate when they are transferred from an acidic to an alkaline solution. The formation of ATP during acid-to-base transition (A/B) requires no light. In fact, the reaction is generally carried out in the presence of p-chlorophenyl-1,1-dimethyl urea (CMU), a powerful inhibitor of photosynthesis, to prevent photophosphoiylation. 

Undecanoic acid, 32, 104 10-Undecynoic acid, 32, 104 Unsaturation, quantitative estimation by bromate-bromide titration method, 34, 86, 89 Urea, 30, 24 31, 11 Urea, I-(T -bromophenyl)-, 31, 8 1-(o-chlorophenyl)-2-thio-, 31, 21 1,1-dimethyl-, 32, 61 I-(P-phenetyl)-, 31,11... 

Synonyms N-((4-Chlorophenyl) aminocarbonyl)-2,6-difluorobenzamide 1-(4-Chlorophenyl)-3-(2,6-difluorobenzoyl) urea Difluron Dimilin Empirical C14H9CIF2N2O2 Properties Cryst. m.w. 310.70 m.p. 230-232 C Toxicology LD50 (oral, rat) 4640 mg/kg, (skin, rabbit) 2000 g/kg mod. toxic by skin contact mildly toxic by ing. mutagen TSCA listed Hazardous Decomp. Prods. Heated to decomp., emits very toxic fumes of Cl, F, NOx Uses Insecticide interfering with chitin deposition used for forestry ornamentals, fruit, field crops, horticulture, etc. 

Urea, N-((4-chlorophenyl)methyl)-N-cyclopentyl-N -phenyl-. See Pencycuron Urea, 3-(3-chloro-p-tolyl)-1,1-dimethyl-. See Chlorotoluron... 

Other more common aromatic or cyclic chlorinated compounds were found under various trademarks are 4,4 -dichloro-3,3 -trifluoromethyl diphenylurea (Mitin LP, Ciba-Geigy) N-5-chloro-2-(2-sulfo-4-chlorophenyl-N -3, 4 -dichlorophenyl urea, (Mitin FF), polychloro-2-(chloromethylsulfonamido)-diphenyl ethers, [Pg.287]

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