Chemistry Organic Building Blocks Fluorinated Building Blocks 1,2-Difluoro-4-Nitrobenzene

1,2-Difluoro-4-Nitrobenzene

These compounds have the same murcko framework: benzene,and at least 2 kinds of functional groups( —F,—NO2).

Electrophilic Aromatic Substitution (EAS): Fluorobenzene can undergo typical electrophilic aromatic substitution reactions, similar to benzene. The fluorine atom, being electron-withdrawing, can influence the reactivity of the benzene ring. Common EAS reactions include nitration, halogenation, sulfonation, and Friedel-Crafts reactions.
Halogenation: Nitrobenzene can undergo halogenation reactions, where halogen atoms (such as chlorine or bromine) are substituted onto the benzene ring. This is usually achieved using halogenating agents in the presence of a catalyst.

Further Reading:

Framework+−

(2,3-Difluorophenyl)Boronic Acid (2,6-Difluorophenyl)Boronic Acid (2-Chloro-6-Fluorophenyl)Boronic Acid (2-Fluorobenzyl)Hydrazine (2-Fluorophenyl)(Phenyl)Methanone (2-Fluorophenyl)Boronic Acid (2-Fluorophenyl)Hydrazine (2-Fluorophenyl)Methanamine (2-Fluorophenyl)Methanol (3-Fluorophenyl)(Phenyl)Methanone (3-Fluorophenyl)Boronic Acid (3-Fluorophenyl)Methanol (4-Fluorophenyl)(Phenyl)Methanone (4-Fluorophenyl)Boronic Acid (4-Fluorophenyl)Methanamine (4-Fluorophenyl)Methanol 1,1-Difluorocyclobutane 1,1-Difluorocyclohexane 1,2,3,4,5-Pentafluorobenzene 1,2,3,4-Tetrafluorobenzene 1,2,3-Trifluorobenzene 1,2,4-Trifluorobenzene 1,2-Dibromo-3-Fluorobenzene 1,2-Dibromo-4-Fluorobenzene 1,2-Dichloro-3-Fluorobenzene 1,2-Dichloro-4-Fluorobenzene 1,2-Difluoro-3-Iodobenzene 1,2-Difluoro-3-Methoxybenzene 1,2-Difluoro-3-Methylbenzene 1,2-Difluoro-3-Nitrobenzene 1,2-Difluoro-4-Methoxybenzene 1,2-Difluoro-4-Nitrobenzene 1,2-Difluorobenzene 1,3-Dibromo-2,4-Difluorobenzene 1,3-Dibromo-2-Fluorobenzene 1,3-Dichloro-2-Fluorobenzene 1,3-Difluoro-2-Iodobenzene 1,3-Difluoro-2-Methylbenzene 1,3-Difluoro-2-Nitrobenzene 1,4-Dichloro-2-Fluorobenzene 1,4-Difluoro-2-Iodobenzene 1,4-Difluoro-2-Nitrobenzene 1,4-Difluorobenzene 1-(2-Fluorophenyl)Ethan-1-Amine 1-(2-Fluorophenyl)Ethan-1-One 1-(2-Fluorophenyl)Piperazine 1-(2-Fluorophenyl)Propan-1-Amine 1-(3-Fluorophenyl)Ethan-1-One 1-(4-Fluorophenyl)Ethan-1-One 1-(Benzyloxy)-2-Fluorobenzene 1-(Benzyloxy)-3-Fluorobenzene 1-(Bromomethyl)-2-Fluorobenzene 1-(Bromomethyl)-3-Fluorobenzene 1-(Chloromethyl)-2-Fluorobenzene 1-(Chloromethyl)-3-Fluorobenzene 1-Benzyl-4-Fluorobenzene 1-Bromo-2,3-Difluorobenzene 1-Bromo-2,4-Difluorobenzene 1-Bromo-2-Chloro-3-Fluorobenzene 1-Bromo-2-Fluoro-3-Methylbenzene 1-Bromo-3-Fluoro-2-Methoxybenzene 1-Bromo-3-Fluoro-2-Methylbenzene 1-Bromo-3-Fluoro-2-Nitrobenzene 1-Bromo-4-Fluoro-2-Methoxybenzene 1-Bromo-4-Fluoro-2-Methylbenzene 1-Chloro-2,3-Difluorobenzene 1-Chloro-2,4-Difluorobenzene 1-Chloro-3-Fluoro-2-Methoxybenzene 1-Chloro-3-Fluoro-2-Methylbenzene 1-Cyclohexyl-2-Fluorobenzene 1-Ethoxy-2,3-Difluorobenzene 1-Ethoxy-2-Fluorobenzene 1-Ethynyl-2-Fluorobenzene 1-Fluoro-2,3-Dimethylbenzene 1-Fluoro-2-(Methylsulfonyl)Benzene 1-Fluoro-2-Iodo-4-Methylbenzene 1-Fluoro-2-Iodobenzene 1-Fluoro-2-Isopropoxybenzene 1-Fluoro-2-Methylbenzene 1-Fluoro-2-Phenoxybenzene 1-Fluoro-3,5-Dimethylbenzene 1-Fluoro-3-(Methylsulfonyl)Benzene 1-Fluoro-3-Iodo-2-Methylbenzene 1-Fluoro-3-Iodobenzene 1-Fluoro-3-Methoxybenzene 1-Fluoro-3-Methylbenzene 1-Fluoro-3-Nitrobenzene 1-Fluoro-3-Phenoxybenzene 1-Fluoro-4-Iodobenzene 1-Fluoro-4-Methoxybenzene 1-Fluoro-4-Methylbenzene 1-Fluoro-4-Phenoxybenzene 1-Fluorobicyclo[1.1.1]Pentane 1-Fluoronaphthalene 2'-Fluoro-1,1':4',1''-Terphenyl 2,2',3,3',5,5',6,6'-Octafluoro-1,1'-Biphenyl 2,3-Difluoroaniline 2,3-Difluorobenzaldehyde 2,3-Difluorobenzoic Acid 2,3-Difluorobenzonitrile 2,3-Difluorophenol 2,3-Difluoropyridine 2,4-Dibromo-1-Fluorobenzene 2,4-Dichloro-1-Fluorobenzene 2,4-Difluoro-1-Iodobenzene 2,4-Difluoro-1-Methoxybenzene 2,4-Difluoro-1-Nitrobenzene 2,4-Difluoroaniline 2,4-Difluorobenzaldehyde 2,4-Difluorobenzoic Acid 2,4-Difluorobenzonitrile 2,4-Difluorophenol 2,5-Difluoroaniline 2,5-Difluorobenzoic Acid 2,5-Difluoropyridine 2,6-Difluoroaniline 2,6-Difluorobenzaldehyde 2,6-Difluorobenzoic Acid 2,6-Difluorobenzonitrile 2,6-Difluorophenol 2,6-Difluoropyridine 2-(2-Fluorophenyl)Acetic Acid 2-(2-Fluorophenyl)Acetonitrile 2-(2-Fluorophenyl)Pyrrolidine 2-(3-Fluorophenyl)Acetic Acid 2-(3-Fluorophenyl)Pyrrolidine 2-(4-Fluorophenyl)-1H-Indole 2-(4-Fluorophenyl)Acetic Acid 2-(Bromomethyl)-1,3-Difluorobenzene 2-Amino-2-(2-Fluorophenyl)Acetic Acid 2-Amino-3-(2-Fluorophenyl)Propanoic Acid 2-Amino-3-Fluorobenzoic Acid 2-Bromo-1,3,4-Trifluorobenzene 2-Bromo-1,3-Difluorobenzene 2-Bromo-1,4-Difluorobenzene 2-Bromo-1-Chloro-3-Fluorobenzene 2-Bromo-1-Chloro-4-Fluorobenzene 2-Bromo-1-Fluoro-4-Methylbenzene 2-Bromo-4-Chloro-1-Fluorobenzene 2-Bromo-4-Fluoro-1-Methoxybenzene 2-Bromo-4-Fluoro-1-Methylbenzene 2-Bromo-4-Fluoroaniline 2-Bromo-4-Fluorobenzaldehyde 2-Bromo-4-Fluorobenzonitrile 2-Bromo-4-Fluorophenol 2-Bromo-5-Fluoroaniline 2-Bromo-5-Fluorobenzaldehyde 2-Bromo-5-Fluorobenzoic Acid 2-Bromo-6-Fluoroaniline 2-Bromo-6-Fluorophenol 2-Chloro-1,3-Difluorobenzene 2-Chloro-1,4-Difluorobenzene 2-Chloro-3-Fluoropyridine 2-Chloro-4-Fluoro-1-Methoxybenzene 2-Chloro-4-Fluoroaniline 2-Chloro-4-Fluorobenzaldehyde 2-Chloro-4-Fluorobenzoic Acid 2-Chloro-4-Fluorobenzonitrile 2-Chloro-4-Fluorophenol 2-Chloro-5-Fluoropyrimidine 2-Chloro-6-Fluoroaniline 2-Chloro-6-Fluorobenzoic Acid 2-Chloro-6-Fluorobenzonitrile 2-Chloro-6-Fluorophenol 2-Fluoro-1,3-Dimethoxybenzene 2-Fluoro-1,3-Dimethylbenzene 2-Fluoro-1-Iodo-4-Methylbenzene 2-Fluoro-3-Methylbenzaldehyde 2-Fluoro-3-Methylpyridine 2-Fluoro-4-Methoxyaniline 2-Fluoro-4-Methyl-1-Nitrobenzene 2-Fluoro-4-Methylbenzoic Acid 2-Fluoro-4-Methylpyridine 2-Fluoro-5-Methylpyridine 2-Fluoro-6-Methylpyridine 2-Fluoro-N-Methylbenzamide 2-Fluoro-N-Phenylaniline 2-Fluoro-N-Phenylbenzenesulfonamide 2-Fluoroaniline 2-Fluorobenzaldehyde 2-Fluorobenzamide 2-Fluorobenzenesulfonamide 2-Fluorobenzenesulfonyl Chloride 2-Fluorobenzoic Acid 2-Fluoropyridine 2-Fluoropyrimidine 3,3-Difluoropiperidine 3,3-Difluoropyrrolidine 3,4-Difluoroaniline 3,4-Difluorophenol 3,5-Difluoropyridine 3-((Tert-Butoxycarbonyl)Amino)-4-(2-Fluorophenyl)Butanoic Acid 3-Chloro-2-Fluoroaniline 3-Fluoro-1,1'-Biphenyl 3-Fluoro-2-Iodoaniline 3-Fluoro-2-Methylaniline 3-Fluoro-2-Methylpyridine 3-Fluoro-4-Nitroaniline 3-Fluoroaniline 3-Fluorobenzaldehyde 3-Fluorobenzamide 3-Fluorobenzenesulfonyl Chloride 3-Fluorobenzoic Acid 3-Fluorophenol 3-Fluoropiperidine 3-Fluoropyridin-2-Amine 3-Fluoropyridin-4-Amine 3-Fluorothiophene 4,4-Difluoropiperidine 4-(2-Fluorophenyl)Morpholine 4-(4-Fluorophenyl)Thiazole 4-Chloro-5-Fluoro-2-Methylpyrimidine 4-Fluoro-1-Methyl-2-Nitrobenzene 4-Fluoro-1H-Indazole 4-Fluoro-1H-Indole 4-Fluoro-1H-Pyrrolo[2,3-B]Pyridine 4-Fluoro-2-Iodoaniline 4-Fluoro-2-Nitroaniline 4-Fluoroaniline 4-Fluorobenzaldehyde 4-Fluorobenzamide 4-Fluorobenzenesulfonyl Chloride 4-Fluorobenzo[D]Thiazole 4-Fluorobenzoic Acid 4-Fluorobenzonitrile 4-Fluoroisoquinoline 4-Fluorophenol 4-Fluoropyrimidine 5-Fluoro-1,2,3,4-Tetrahydroisoquinoline 5-Fluoro-1H-Benzo[D][1,2,3]Triazole 5-Fluoro-1H-Benzo[D]Imidazole 5-Fluoro-1H-Indole 5-Fluoro-1H-Pyrrolo[2,3-B]Pyridine 5-Fluoro-2,3-Dihydro-1H-Indene 5-Fluoro-2,3-Dihydrobenzofuran 5-Fluoro-2-Methylpyridine 5-Fluoro-3,4-Dihydronaphthalen-1(2H)-One 5-Fluorochromane 5-Fluoroindoline 5-Fluoroisoindolin-1-One 5-Fluoropyridin-2-Amine 5-Fluoropyrimidine 6-Fluoro-1,2,3,4-Tetrahydroisoquinoline 6-Fluoro-1,2,3,4-Tetrahydroquinoline 6-Fluoro-1H-Indazole 6-Fluoro-1H-Indole 6-Fluoro-1H-Pyrrolo[2,3-B]Pyridine 6-Fluorobenzo[D]Thiazole 6-Fluorochromane 6-Fluoropyridin-2-Amine 6-Fluoropyridin-3-Amine 7-Fluoro-1,2,3,4-Tetrahydroisoquinoline 7-Fluoro-1,2,3,4-Tetrahydroquinoline 7-Fluoro-1H-Indazole 7-Fluoro-1H-Indole 7-Fluorobenzo[D]Thiazole 7-Fluoroindoline-2,3-Dione 7-Fluoroisoquinoline 8-Fluoro-3,4-Dihydronaphthalen-1(2H)-One 8-Fluorochromane 8-Fluoroimidazo[1,2-A]Pyridine 8-Fluoroisoquinoline 8-Fluoroquinazoline Benzenesulfonyl Fluoride Ethyl 2-Fluorobenzoate Ethyl 3-Fluorobenzoate Fluorobenzene Methyl 2,6-Difluorobenzoate Methyl 2-Fluorobenzoate Methyl 3-Fluorobenzoate Methyl 4-Fluorobenzoate Methyl 6-Fluoronicotinate N-(3-Fluorophenyl)Acetamide N-(4-Fluorophenyl)Benzamide Pentafluoro(Phenyl)-L6-Sulfane Phenyl Trifluoromethanesulfonate Tert-Butyl (4-Fluorophenyl)Carbamate Trifluoro(Phenyl)Borate

By Key Group+−

1,1-Difluoroethyl 2,2-Difluoroacetic Acid 2,2-Difluoroethoxy 2,2-Difluoroethyl 2-Bromo-1,1,2,2-Tetrafluoroethoxy 2-Fluoroethyl Bromo-Fluorobenzene Carbonyl Fluoride Chloro-Fluoro-Benzene Dichlorofluorobenzene Difluoro Difluoroaniline Difluorobenzaldehyde Difluorobenzamide Difluorobenzenesulfonamide Difluorobenzoate Difluorobenzylamine Difluorocyclobutanecarboxylate Difluoroethyl Difluoroethyl Difluoromethoxy Difluoromethoxy Difluoropiperidine Difluoropropan Difluoropropan Difluoropyrimidine Difluoroquinoline Ethyl 2,2-Difluoro-Acetate Fluindamine Fluindenamine Fluoro-Benzenesulfonyl-Chloride Fluoro-Benzoimidazole Fluoro-Dihydro-Benzoxazine Fluoro-Indazol-Amine Fluoro-Indazole-Carboxylate Fluoro-Indole-Carboxylate Fluoro-Methyl Fluoro-Methyl-Indazole Fluoro-Naphthyridine Fluoro-Phenyl-Boronic Acid Fluoro-Pyrrolopyridine Fluoroacetanilide Fluoroacetophenone Fluoroaniline Fluoroanisole Fluorobenzaldehyde Fluorobenzamide Fluorobenzenesulfonamide Fluorobenzenethiol Fluorobenzimidamide Fluorobenzo Fluorobenzoate Fluorobenzoic Fluorobenzoyl Fluorobenzoyl-Chloride Fluorobenzylamine Fluorobromobenzene Fluorocarboxylic Acid Fluorochroman Fluorocinnamic Fluorocinnamic Fluorocinnamic Acid Fluorocyclopropanecarboxylic Fluoroethoxy Fluoroethyl Fluoroethyl Fluoroimidazo Fluoroindan Fluoroindan Fluoroisonicotinaldehyde Fluoroisonicotinate Fluoroisonicotinic Fluoroisonicotinic Acid Fluoromethyl Fluoromethyl Fluoromethyl-Indole Fluoronicotinaldehyde Fluoronicotinamide Fluoronicotinate Fluoronicotinic Fluoronicotinic Fluoronicotinic Acid Fluoronitrobenzene Fluorophenyl Fluorophenyl-Borate Fluorophenyl-Boronate Fluorophenylisocyanate Fluorophenylisothiocyanate Fluoropropan Fluoropropan Fluoropyrimidine Fluoroquinazoline Fluoroquinoline Fluorostyryl Fluorosulfonyl Fluorosulfonyl Fluorotoluene Heptadecafluorodecyl Heptafluoro Hexafluoro Hexafluoro Hexafluoropropan Hexafluoropropan Nonafluoro Nonafluoro Nonafluorobutane Nonafluorobutane Nonafluorohexyl Nonafluorohexyl Octafluoro Octafluoro Pentafluoro Pentafluorobenzoate Perfluorohexyl Perfluorohexyl Tetrafluoro Tetrafluoro Tetrafluoroaniline Tetrafluoroethoxy Tetrafluoroethoxy Tetrafluoropropyl Tetrafluoropropyl Tetrahydroquinoline-Fluoro Tridecafluorooctyl Tridecafluorooctyl Trifluoro Trifluoro Trifluoroacetamide Trifluoroacetyl Trifluoroaniline Trifluorobenzaldehyde Trifluorobenzoate Trifluorobenzoylchloride Trifluorobut Trifluorobut Trifluorobutane Trifluorobutane Trifluoroethan Trifluoroethan Trifluoroethanamine Trifluoroethanol Trifluoroethoxy Trifluoroethoxy Trifluoroethyl Trifluoromethanesulfonamide Trifluoromethanesulfonyl Trifluoromethoxy Trifluoromethoxy Trifluoromethylthio Trifluoromethylthio Trifluoropropane Trifluoropropanoate Trifluoropropyl

By Parent Nucleus+−

Aliphatic Heterocycles Aromatic Heterocycles Azetidines Benzimidazoles Benzisoxazoles Benzofurans Benzothiazoles Benzothiophenes Benzoxazoles Carbazoles Dioxolanes Epoxides Furans Guanidines Imidazoles Imidazolines Indazoles Indoles Indolines Isoquinolines Isoxazoles Morpholines Naphthyridines Other Aliphatic Heterocycles Other Aromatic Heterocycles Oxadiazoles Oxazoles Oxazolidines Oxetanes Phthalazines Piperazines Piperidines Purines Pyrans Pyrazines Pyrazoles Pyridazines Pyridines Pyrimidines Pyrroles Pyrrolidines Pyrrolines Quinazolines Quinolines Quinoxalines Spiroes Tetrahydrofurans Tetrahydroisoquinolines Tetrahydropyrans Tetrahydroquinolines Thiazoles Thiazolidines Thiophenols Triazines Triazoles

By Functional Group+−

Acyl Chlorides Alcohols Aldehydes Aliphatic Chain Hydrocarbons Aliphatic Cyclic Hydrocarbons Alkenyls Alkyls Alkynyls Amides Amidines Amines Anhydrides Aryls Benzyl Bromides Benzyl Chlorides Bromides Carboxylic Acid Salts Carboxylic Acids Chiral Building Blocks Chlorides Difluoromethyls Esters Ethers Hydrazides Hydrazines Iodides Isocyanides Ketones Nitriles Nitroes Oximes Phenols Phosphoruses Sulfamides Sulfides Sulfonates Sulfones Sulfonic Acids Sulfonyl Chlorides Thioesters Thiols Thiophenes Thioureas Trifluoromethyls Ureas

By Chemical Elements+−

    Bx
    Cx
    Nx
    Ox
    Fx
    Six
    Px
    Sx
    Clx
    Brx
    Ix

    Formula Weight+−

    cLogP+−

    H-Acceptors+−

    H-Donors+−

    Polar Surface Area+−

    Druglikeness+−

    NNCH/NNH+−

    sp3-Atoms+−

    Non-Aromatic Rings+−

    Aromatic Rings+−

    Rotatable Bonds+−

    By Configuration+−

    Typically In Stock
    Purity
    • Please Select
    • 99+%
    • 99%
    • 98+%
    • 98%
    • 97+%
    • 97%
    • 96+%
    • 96%
    • 95+%
    • 95%
    • 93%
    • 90+%
    • 90%
    Size
    • Please Select
    • 1mg
    • 2mg
    • 5mg
    • 10mg
    • 25mg
    • 50mg
    • 100mg
    • 250mg
    • 1g
    • 5g
    • 10g
    • 25g
    • 100g
    • 500g
    • 1000g
    • 1kg
    Clear Filters
    3-Bromo-1,2,4-trifluoro-5-nitrobenzene

    click to sign in and save

    A383412485318-76-195%

    3-Bromo-1,2,4-trifluoro-5-nitrobenzene

    $13.00/250mg

    Detail
    2,3-Difluoro-6-nitroaniline

    click to sign in and save

    A368274211693-73-197%

    2,3-Difluoro-6-nitroaniline

    $15.00/5g

    Detail
    2,3-Difluoro-6-nitrobenzonitrile

    click to sign in and save

    A252372157647-01-399%

    2,3-Difluoro-6-nitrobenzonitrile

    $385.00/1g

    Detail
    2,3,4-Trifluoro-5-nitrobenzoic acid

    click to sign in and save

    A114523197520-71-197%

    2,3,4-Trifluoro-5-nitrobenzoic acid

    $87.00/25g

    Detail
    1-Bromo-2,3,4,5-tetrafluoro-6-nitrobenzene

    click to sign in and save

    A7731505580-83-695%

    1-Bromo-2,3,4,5-tetrafluoro-6-nitrobenzene

    $678.00/25g

    Detail
    1,4-Dibromo-2,3-difluoro-5,6-dinitrobenzene

    click to sign in and save

    A4319131283598-32-298%

    1,4-Dibromo-2,3-difluoro-5,6-dinitrobenzene

    $40.00/100mg

    Detail
    3,4-Difluoronitrobenzene

    click to sign in and save

    A279035369-34-698%

    3,4-Difluoronitrobenzene

    $75.00/500g

    Detail
    Ethyl 4,5-Difluoro-2-nitrobenzoate

    click to sign in and save

    A8316701214387-06-095%

    Ethyl 4,5-Difluoro-2-nitrobenzoate

    $72.00/10g

    Detail
    Methyl 4,5-difluoro-2-nitrobenzoate

    click to sign in and save

    A1083161015433-96-197%

    Methyl 4,5-difluoro-2-nitrobenzoate

    $10.00/250mg

    Detail
    2,3,4-Trifluoro-6-nitroaniline

    click to sign in and save

    A170641148416-38-098%

    2,3,4-Trifluoro-6-nitroaniline

    $21.00/5g

    Detail
    2,3-Difluoro-6-nitrophenol

    click to sign in and save

    A14919582419-26-998%

    2,3-Difluoro-6-nitrophenol

    $13.00/5g

    Detail
    Methyl 2,3,4-trifluoro-5-nitrobenzoate

    click to sign in and save

    A741334918321-24-198%

    Methyl 2,3,4-trifluoro-5-nitrobenzoate

    $124.00/5g

    Detail
    4,5-Difluoro-2-nitrophenol

    click to sign in and save

    A36246855346-97-998%

    4,5-Difluoro-2-nitrophenol

    $49.00/5g

    Detail
    1,2,3-Trifluoro-5-methoxy-4-nitrobenzene

    click to sign in and save

    A221769925890-13-798%

    1,2,3-Trifluoro-5-methoxy-4-nitrobenzene

    $122.00/25g

    Detail
    2,3-Difluoro-6-nitrotoluene

    click to sign in and save

    A154650914348-35-995%

    2,3-Difluoro-6-nitrotoluene

    $12.00/250mg

    Detail
    2-Chloro-4,5-difluoronitrobenzene

    click to sign in and save

    A586887771-76-698%

    2-Chloro-4,5-difluoronitrobenzene

    $55.00/25g

    Detail
    1,2,4-Trifluoro-5-nitrobenzene

    click to sign in and save

    A7630362105-61-598%

    1,2,4-Trifluoro-5-nitrobenzene

    $14.00/10g

    Detail
    1,2,3,4-Tetrafluoro-5-nitrobenzene

    click to sign in and save

    A3732565580-79-099%

    1,2,3,4-Tetrafluoro-5-nitrobenzene

    $25.00/5g

    Detail
    2,3,5-Trifluoro-6-nitroaniline

    click to sign in and save

    A2213625415-62-395%

    2,3,5-Trifluoro-6-nitroaniline

    $220.00/1g

    Detail
    3-Chloro-4,5-difluoronitrobenzene

    click to sign in and save

    A29022153780-44-298%

    3-Chloro-4,5-difluoronitrobenzene

    $23.00/1g

    Detail
    1 2    page 1 of 2 Pages

    Inquiry