Hebei Sankai Chemical Technology Co., LTD. is located in xingtai City, Hebei Province, China. It is a biotechnology enterprise engaged in the research, development, production and sales of animal and plant extracts, cosmetics, pharmaceutical raw mate
Cas:57-13-6
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inquiryUrea 46%, industrial grade, automotive grade, AdBlue Urea prill on sales Appearance White particles have no mechanical impurities. Total Nitrogen 46.2% Mass fraction of biuret 0.80% Moisture 0.33% Iron 0.00005% Alkalinity (based on NH
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Cas:57-13-6
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inquiryWith our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturin
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inquiry1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; ...... Appearance:White crystalline powder Storage:2-8°C Package:50kg/bag A
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inquiryHebei Yanxi Chemical Co., Ltd. is a professional research, development and production of lead acetate benzene acetamide enterprise backbone members by local well-known entrepreneurs and professional senior engineers in the party's "low car
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inquiryUrea CAS NO. 57-13-6;37955-36-5 Other name Carbamide; Urea solution; Urea, USP Grade Carbamide, USP Grade; Urea, MB Grade (1.12007); Urea (Medical); Urea-12C; 10-Hydroxy-2-trans-Decenoic Acid; Carbonyl di
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inquiryCH4N2OCangzhou Enke Pharma Tech Co.,ltd. is located in Cangzhou City, Hebei province ,where is a famous petroleum chemical industry city in China. Enke Pharma a high-tech enterprise ,and we are dedicated to developing and manufacturing new api, int
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inquiryProduct Name: Urea Synonyms: Analysis of pure urea;Fluorouracil EP ImpurityG;Usp grade urea crystallization;USP grade urea;Reagent grade moisturizing urea;furanyl);Reagent grade urea;Cosmetics moisturizing
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inquiryBeluga chemical professional supply High quality Urea CAS57-13-6 1. Beluga Chemical has a professional RESEARCH and development team and strong technical force to ensure technical support and research capabilities. 2. Made in China and exported t
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inquiryHello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai
Cas:57-13-6
Min.Order:1 Kilogram
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inquiryUrea CAS: 57-13-6 Specification ProName: Best package Urea CAS NO.57-13-6,high ... CasNo: 57-13-6 Molecular Formula: C2H6 Appearance: white powder Application: medical DeliveryTime: 3 days after payment
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Cas:57-13-6
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryOur Services 1. New Molecules R&D 2. Own test center HPLC NMR GC LC-MS 3. API and Intermediates from China reputed manufacturers 4. Documents support COA MOA MSDS DMF open part Our advantages 1. Government awarded company. Top 100 enter
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ammonium cyanate
urea
Conditions | Yield |
---|---|
In ethanol at 32°C; | 100% |
In ethanol at 32°C; | 100% |
In water Kinetics; izomerization; equil. react.; |
Conditions | Yield |
---|---|
With ammonia; water at 60℃; for 2h; | 100% |
carbon monoxide
ammonia
sulfur
A
hydrogen sulfide
B
urea
Conditions | Yield |
---|---|
In methanol; water molar ratio of CO:S = 1.36; 35 min; at 110°C; 60% excess of NH3; 75% CH3OH; | A n/a B 96.2% |
In methanol; water molar ratio of NH3:S:CO = 1.4 : 1 : 1.36; 35 min; at 110°C; 54% CH3OH; | A n/a B 96.2% |
In methanol; water molar ratio of NH3:S:CO = 1.4 : 1 : 1.36; 35 min; at 110°C; 54% CH3OH; | A n/a B 96.3% |
thiourea
urea
Conditions | Yield |
---|---|
With bismuth(III) nitrate In acetonitrile for 0.25h; Heating; | 96% |
With Oxone for 0.0833333h; | 96% |
With 3-carboxypyridinium chlorochromate In acetonitrile for 0.0333333h; Product distribution; Further Variations:; Reagents; Temperatures; without microwave irradiation; solvent-free; microwave irradiation; | 95% |
Conditions | Yield |
---|---|
With dmap; dicyclohexyl-carbodiimide In diethyl ether at 0 - 20℃; | A 96% B n/a |
Conditions | Yield |
---|---|
In ammonia at -33°C; | A 91% B n/a |
Conditions | Yield |
---|---|
In acetone at 20℃; for 2h; Inert atmosphere; Schlenk technique; | A 90% B 90% |
sodium methylate
4-ureidocarbonylpyrazole
A
methyl pyrazole-4-carboxylate
B
urea
Conditions | Yield |
---|---|
In methanol for 2h; Heating; | A 89% B n/a |
Conditions | Yield |
---|---|
1.5-fold molar excess of NH3; at 105°C; | A n/a B 88% |
In ethanol at a temp. near the m.p. of urea; using abs. ethanol; | A n/a B 76% |
In ammonia at a temp. near the m.p. of urea; | A n/a B 64% |
Conditions | Yield |
---|---|
With ammonium chloride In ammonia at exclusion of light, air and moisture; 20°C; 5 d; | A n/a B 85% |
In ammonia at exclusion of light, air and moisture; 20°C; 5 d; | A n/a B 77% |
In ammonia at exclusion of light, air and moisture; 20°C; 1 d; | A n/a B 31% |
In ammonia at exclusion of light, air and moisture; 20°C; 14 d; | A n/a B >99 |
Conditions | Yield |
---|---|
With [OsCl2(η6-p-cymene)(PMe2OH)]; water at 40℃; for 0.25h; Reagent/catalyst; Inert atmosphere; Sealed tube; | 80% |
With sulfuric acid |
ammonium oxythiocarbamate
A
ammonium cyanate
B
sulfur
C
urea
Conditions | Yield |
---|---|
In ethanol storing in air; elimination of the ppt.; crystn. S by HgO at low temp.; | A n/a B n/a C 80% |
In ethanol storing in air; elimination of the ppt.; crystn. S by HgO at low temp.; | A n/a B n/a C 80% |
In ethanol storing in air; elimination of the ppt.; crystn. S by HgO at low temp.; | A n/a B n/a C 80% |
Conditions | Yield |
---|---|
at molar ratio of NH3:CO2 = 8; | 77% |
High Pressure; at 175 until 180°C; at a pressure of 175 at; molar ratio of NH3:CO2 = 6; liquid phase; | 76% |
at molar ratio of NH3:CO2 = 6; | 72% |
propan-1-ol
carbon monoxide
1-amino-3-(dimethylamino)propane
A
propamocarb
B
urea
Conditions | Yield |
---|---|
With oxygen; N,N-dimethyl-formamide; sodium iodide; palladium dichloride at 125℃; under 30003 Torr; for 2h; Pressure; Reagent/catalyst; Autoclave; Inert atmosphere; | A 75.6% B 5.7% |
B
urea
Conditions | Yield |
---|---|
aluminum nickel In ethanol | A 73% B n/a |
uric Acid
A
pyrimidine-2,4,5,6(1H,3H)-tetraone
B
urea
Conditions | Yield |
---|---|
With rose bengal; sodium hydroxide In glycerol for 36h; Irradiation; | A 72.18% B n/a |
ethyl 4-(4-chlorophenyl)-1,2,3,4-tetrahydro-6-methyl-2-thioxopyrimidine-5-carboxylate
A
(4-chlorobenzylidene)hydrazine
B
thiourea
C
urea
D
5-hydroxy-3-methylpyrazole
Conditions | Yield |
---|---|
With hydrazine hydrate In neat (no solvent) for 6h; Reflux; | A 70% B n/a C n/a D 55% |
5-carboethoxy-6-methyl-4-(4-methylphenyl)-1H-pyrimidin-2-thione
A
4-methylbenzaldehyde hydrazone
B
thiourea
C
urea
D
5-hydroxy-3-methylpyrazole
Conditions | Yield |
---|---|
With hydrazine hydrate In neat (no solvent) for 6h; Reflux; | A 69% B n/a C n/a D 55% |
Conditions | Yield |
---|---|
In ethanol; water at 80℃; for 12h; Green chemistry; | A n/a B 68% |
5-ethoxycarbonyl-4-phenyl-6-methyl-3,4-dihydropyrimidine-2(1H)-thione
A
benzaldehyde, hydrazone
B
thiourea
C
urea
D
5-hydroxy-3-methylpyrazole
Conditions | Yield |
---|---|
With hydrazine hydrate In neat (no solvent) for 6h; Reflux; | A 67% B n/a C n/a D 55% |
propan-1-ol
carbon monoxide
N-butylamine
A
urea
B
n-propyl N-n-butyl carbamate
Conditions | Yield |
---|---|
With oxygen; triethylamine; sodium iodide; palladium dichloride at 165℃; Reagent/catalyst; Autoclave; Inert atmosphere; | A 66% B 8% |
5-(ethoxycarbonyl)-4-(4-methoxyphenyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-thione
A
p-anisaldehyde hydrazone
B
thiourea
C
urea
D
5-hydroxy-3-methylpyrazole
Conditions | Yield |
---|---|
With hydrazine hydrate In neat (no solvent) for 6h; Reflux; | A 66% B n/a C n/a D 55% |
4-(4-chlorophenyl)-5-(ethoxycarbonyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-one
A
(4-chlorobenzylidene)hydrazine
B
thiourea
C
urea
D
5-hydroxy-3-methylpyrazole
Conditions | Yield |
---|---|
With hydrazine hydrate In neat (no solvent) for 6h; Reflux; | A 62% B n/a C n/a D 55% |
ethyl 6-methyl-4-phenyl-3,4-dihydropyrimidin-2(1H)-one-5-carboxylate
A
benzaldehyde, hydrazone
B
thiourea
C
urea
D
5-hydroxy-3-methylpyrazole
Conditions | Yield |
---|---|
With hydrazine hydrate In neat (no solvent) for 6h; Reflux; | A 62% B n/a C n/a D 55% |
Conditions | Yield |
---|---|
at 190℃; under 112511 Torr; | 61% |
ethyl 4-(4-methoxyphenyl)-6-methyl-1,2,3,4-tetrahydropyrimidin-2-one-5-carboxylate
A
p-anisaldehyde hydrazone
B
thiourea
C
urea
D
5-hydroxy-3-methylpyrazole
Conditions | Yield |
---|---|
With hydrazine hydrate In neat (no solvent) for 6h; Reflux; | A 60% B n/a C n/a D 55% |
ethyl 6-methyl-2-oxo-4-p-tolyl-1,2,3,4-tetrahydropyrimidine-5-carboxylate
A
4-methylbenzaldehyde hydrazone
B
thiourea
C
urea
D
5-hydroxy-3-methylpyrazole
Conditions | Yield |
---|---|
With hydrazine hydrate In neat (no solvent) for 6h; Reflux; | A 58% B n/a C n/a D 55% |
Conditions | Yield |
---|---|
Kinetics; at 200°C; | A n/a B 55% |
Kinetics; at 200°C; | A n/a B 55% |
Kinetics; at 140°C; | A n/a B 43% |
Conditions | Yield |
---|---|
With rose bengal In acetic acid; glycerol for 38h; Irradiation; | A 45.11% B n/a |
Conditions | Yield |
---|---|
With acetic acid at 50℃; for 12h; | 100% |
With acetic acid | |
at 80℃; | |
at 100 - 105℃; | |
With acetic acid |
ethyl acetoacetate
4-nitrobenzaldehdye
urea
ethyl 6-methyl-4-(4-nitrophenyl)-2-oxo-1,2,3,4-tetrahydro-5-pyrimidinecarboxylate
Conditions | Yield |
---|---|
With 1-methylimidazole based ionic liquid terminated dendritic moiety prepared from 2,4,6-trichloro-1,3,5-triazine and 1,3-diaminopropane immobilized on 3-aminopropyltriethoxysilane functionalized bentonite In ethanol; water at 50℃; for 3h; Biginelli Pyrimidone Synthesis; Green chemistry; | 100% |
With guanidine In neat (no solvent) at 80℃; for 2h; Biginelli Pyrimidone Synthesis; | 99% |
With 1,4-diazaniumbicyclo[2.2.2]octane diacetate In neat (no solvent) at 80℃; for 0.0833333h; Biginelli Pyrimidone Synthesis; Green chemistry; | 99% |
ethyl acetoacetate
benzaldehyde
urea
ethyl 6-methyl-4-phenyl-3,4-dihydropyrimidin-2(1H)-one-5-carboxylate
Conditions | Yield |
---|---|
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere; | 100% |
With Cl7Fe2(1-)*C6H9N2O2(1+); C8H15N2(1+)*C4H12B(1-) at 80℃; for 2h; Reagent/catalyst; Biginelli Pyrimidone Synthesis; | 99% |
With guanidine In neat (no solvent) at 80℃; for 2h; Biginelli Pyrimidone Synthesis; | 99% |
dimethylglyoxal
urea
tetrahydro-3a,6a-dimethylimidazo<4,5-d>imidazole-2,5-(1H,3H)-dione
Conditions | Yield |
---|---|
With H3PW12O40 In methanol at 20℃; for 5.5h; | 100% |
With 1-hydroxyethylene-(1,1-diphosphonic acid) In water at 80℃; for 1h; Green chemistry; | 95% |
With hydrogenchloride In water at 20℃; for 12h; | 76% |
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide at 145 - 150℃; for 3.5h; | 100% |
at 144.85 - 149.85℃; for 4h; | 59.69% |
In N,N-dimethyl-formamide for 5h; Carbonylation; Heating; | 55% |
urea
hydroxy-phenyl-acetic acid ethyl ester
5-phenyloxazolidine-2,4-dione
Conditions | Yield |
---|---|
With sodium ethanolate; sodium hydride In ethanol at 0℃; for 2.5h; Reflux; | 100% |
With sodium ethanolate In ethanol at 0℃; for 4h; Reflux; | 17.04% |
With sodium methylate Hydrolysieren des Reaktionsprodukts; |
Conditions | Yield |
---|---|
at 200℃; for 1h; | 100% |
at 200℃; for 2h; | 85% |
With sodium hydroxide In water for 120h; Heating; | 33% |
urea
urea, monosodium salt
Conditions | Yield |
---|---|
With sodium hydride; toluene at 25 - 90℃; for 1.5h; Reagent/catalyst; | 100% |
With sodium methylate In methanol; 5,5-dimethyl-1,3-cyclohexadiene at 120℃; | 93% |
With sodium methylate In methanol; 5,5-dimethyl-1,3-cyclohexadiene at 120℃; | 93% |
With ammonia; sodium |
ethyl acetoacetate
4-methoxy-benzaldehyde
urea
ethyl 4-(4-methoxyphenyl)-6-methyl-1,2,3,4-tetrahydropyrimidin-2-one-5-carboxylate
Conditions | Yield |
---|---|
With piperidine In ethanol for 4h; Heating; | 100% |
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere; | 100% |
With CuCl2*2H2O for 0.025h; Biginelli condensation; microwave irradiation; | 99% |
Conditions | Yield |
---|---|
With sulfuric acid In ethanol for 8h; Heating; | 100% |
ethyl acetoacetate
4-chlorobenzaldehyde
urea
4-(4-chlorophenyl)-5-(ethoxycarbonyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-one
Conditions | Yield |
---|---|
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere; | 100% |
With [1-(3-sulfonic acid)]propyl-3-methylimidazolium hydrogen sulfate In ethanol at 80℃; for 3h; Time; Biginelli Pyrimidone Synthesis; | 99% |
Stage #1: ethyl acetoacetate; 4-chlorobenzaldehyde With secondary amine linked triazine and pyrene containing microporous organic polymer at 40 - 80℃; for 0.5h; Stage #2: urea for 2h; Biginelli Pyrimidone Synthesis; Reflux; | 99% |
4-methoxy-benzaldehyde
acetoacetic acid methyl ester
urea
5-methoxycarbonyl-4-(4-methoxyphenyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-one
Conditions | Yield |
---|---|
With sulfuric acid; copper(l) chloride In methanol Biginelli Pyrimidone Synthesis; Reflux; Inert atmosphere; | 100% |
With ytterbium(III) triflate at 100℃; for 0.333333h; Biginelli reaction; | 99% |
With calcium chloride In ethanol for 2h; Biginelli reaction; Heating; | 98% |
Conditions | Yield |
---|---|
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere; | 100% |
With Aliquat 336; sodium hydroxide In water at 100℃; for 0.75h; Reagent/catalyst; Solvent; Temperature; Time; | 91% |
With zinc(II) oxide In water for 0.416667h; Biginelli Pyrimidone Synthesis; | 86% |
Conditions | Yield |
---|---|
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere; | 100% |
With ytterbium(III) triflate at 100℃; for 0.666667h; Biginelli reaction; | 97% |
With 2,2,2-trifluoroethanol at 80℃; Biginelli pyrimidine synthesis; | 94% |
4-methyl-benzaldehyde
ethyl acetoacetate
urea
ethyl 6-methyl-2-oxo-4-p-tolyl-1,2,3,4-tetrahydropyrimidine-5-carboxylate
Conditions | Yield |
---|---|
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere; | 100% |
polystyrene-methylimidazolium(1+)*PF6(1-) In acetic acid at 100℃; for 2h; | 99% |
With indium(III) bromide In ethanol for 7h; Biginelli condensation; Heating; | 98% |
2-methyl-benzyl alcohol
ethyl acetoacetate
urea
ethyl 4-(2-hydroxyphenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate
Conditions | Yield |
---|---|
With piperidine In ethanol for 4h; Heating; | 100% |
With 3-ethoxycarbonylmethyl-1-methylimidazolium hydrogen sulfate at 80℃; for 0.25h; Biginelli reaction; | 92% |
With In(OSO2CF3)3 for 0.183333h; Biginelli reaction; microwave irradiation; | 91% |
ethyl acetoacetate
1-naphthaldehyde
urea
6-methyl-4-naphthalen-1-yl-2-oxo-1,2,3,4-tetrahydro-pyrimidine-5-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere; | 100% |
With copper doped mesoporous silica MCM-41 supported dual acidic ionic liquid-HSO4 In ethanol at 80℃; for 1h; Biginelli Pyrimidone Synthesis; | 97% |
Stage #1: 1-naphthaldehyde; urea With hydrogenchloride In tetrahydrofuran; water at 67℃; for 1h; Biginelli Pyrimidone Synthesis; Green chemistry; Stage #2: ethyl acetoacetate With N,N′-(cyclohexane-1,2-diyl)bis(3,6-dichloropicolinamide) In tetrahydrofuran; water at 67℃; for 5h; Biginelli Pyrimidone Synthesis; Green chemistry; | 95% |
indan-1,2,3-trione hydrate
urea
3a,8a-dihydroxy-1,3,3a,8a-tetrahydroindeno[1,2-d]imidazole-2,8-dione
Conditions | Yield |
---|---|
at 80℃; for 1h; | 100% |
In water at 20℃; for 0.833333h; Green chemistry; | 98% |
In water at 50 - 60℃; | 93% |
Conditions | Yield |
---|---|
With nitric acid for 2h; | 100% |
With nitric acid at 20℃; for 2h; Neat (no solvent); | 100% |
With nitric acid at 20℃; for 2h; | 100% |
Conditions | Yield |
---|---|
With methanesulfonic acid In ethanol for 24h; Biginelli reaction; Heating; | 100% |
Conditions | Yield |
---|---|
at 95 - 100℃; for 4h; | 100% |
methyl 3-amino-4-formylbenzoate
urea
methyl 2-hydroxy-quinazoline-7-carboxylate
Conditions | Yield |
---|---|
at 145℃; for 16h; | 100% |
1-(2-amino-4-methoxyphenyl)ethanone
urea
7-methoxy-4-methyl-quinazolin-2-ol
Conditions | Yield |
---|---|
With acetic acid at 100℃; for 16h; | 100% |
1-(2-amino-3-methoxyphenyl)ethanone
urea
8-methoxy-4-methyl-quinazolin-2-ol
Conditions | Yield |
---|---|
With acetic acid at 100℃; for 16h; | 100% |
ethyl acetoacetate
urea
4-(Methylthio)benzaldehyde
ethyl 6-methyl-4-[4-(methylsulfanyl)phenyl]-2-oxo-1,2,3,4-tetrahydro-5-pyrimidinecarboxylate
Conditions | Yield |
---|---|
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere; | 100% |
Wells-Dawson heteropolyacid catalyst at 80℃; for 1.5h; Biginelli reaction; | 92% |
With 25,26,27,28-terahydroxycalix[4]arene-5,11,7,23-tetrasulfonic acid In ethanol for 8h; Biginelli reaction; Reflux; | 92% |
Conditions | Yield |
---|---|
With ammonium molibdate; 1,8-diazabicyclo[5.4.0]undec-7-ene at 240℃; for 3h; | 100% |
(2R)-2-hydroxy-2-(3-methylphenyl)propanoic acid methyl ester
urea
(5R)-5-methyl-5-(3-methylphenyl)oxazolidine-2,4-dione
Conditions | Yield |
---|---|
With sodium ethanolate In ethanol at 95℃; | 100% |
With sodium ethanolate In ethanol Heating / reflux; | |
With sodium ethanolate In ethanol at 95℃; Heating / reflux; |
5-Amino-1-(2-phenylethyl)-1H-pyrazole-4-carboxylic acid
urea
C13H12N4O2
Conditions | Yield |
---|---|
at 180℃; | 100% |
Conditions | Yield |
---|---|
at 70 - 80℃; for 0.333333h; | 100% |
at 120℃; for 0.333333h; Neat (no solvent); | |
at 74℃; |
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