Product Index

3-(1H,1H,7H-Dodecafluoroheptyloxy)-1,2-epoxypropane

Catalog No.: AA00G3ZU

CAS No.:799-34-8 MDL No.: MFCD00054696

MF: C10H8F12O2 MW: 388.1502

Pricing and Availability

7-Fluoro-3-methyl-1-benzofuran-2-carboxylic acid

Catalog No.: AA00G41K

CAS No.:852388-66-0 MDL No.: MFCD06655338

MF: C10H7FO3 MW: 194.1592

Pricing and Availability

(Perfluoro-n-octyl)ethane

Catalog No.: AA00G42H

CAS No.:77117-48-7 MDL No.: MFCD00236711

MF: C10H5F17 MW: 448.1196

Pricing and Availability

(1,1,2,3,3,3-HEXAFLUOROPROPOXY)-PERFLUOROBENZENE

Catalog No.: AA00G42D

CAS No.:845523-35-5 MDL No.: MFCD06249826

MF: C9HF11O MW: 334.0861

Pricing and Availability

1-(Difluoromethyl)-2,4-difluorobenzene

Catalog No.: AA00G430

CAS No.:845866-84-4 MDL No.: MFCD06657968

MF: C7H4F4 MW: 164.1003

Pricing and Availability

1,1,1,3,3,3-Hexafluoro-2-(4-hydroxyphenyl)propan-2-ol

Catalog No.: AA00G42B

CAS No.:836-79-3 MDL No.: MFCD01050148

MF: C9H6F6O2 MW: 260.1332

Pricing and Availability

3-(3,5-BIS(TRIFLUOROMETHYL)-BENZYLOXY)BROMOBENZENE

Catalog No.: AA00G43J

CAS No.:845866-55-9 MDL No.: MFCD06411662

MF: C15H9BrF6O MW: 399.1258

Pricing and Availability

2-Bromo-6-iodo-4-(trifluoromethoxy)aniline

Catalog No.: AA00G43R

CAS No.:845866-77-5 MDL No.: MFCD06657951

MF: C7H4BrF3INO MW: 381.9164

Pricing and Availability

5-Methyl-4-nitro-3-(perfluoropropyl)-1H-pyrazole

Catalog No.: AA00G43K

CAS No.:82633-69-0 MDL No.: MFCD00155841

MF: C7H4F7N3O2 MW: 295.1144

Pricing and Availability

2-((4-Bromobenzyl)oxy)-1,4-difluorobenzene

Catalog No.: AA00G44E

CAS No.:845866-76-4 MDL No.: MFCD06657948

MF: C13H9BrF2O MW: 299.1108

Pricing and Availability

1-Bromo-3-iodo-5-(trifluoromethoxy)benzene

Catalog No.: AA00G449

CAS No.:845866-78-6 MDL No.: MFCD06657955

MF: C7H3BrF3IO MW: 366.9018

Pricing and Availability

BENZYL-[1-(4-FLUORO-PHENYL)-ETHYL]-AMINE HYDROCHLORIDE

Catalog No.: AA00G43W

CAS No.:820245-52-1 MDL No.: MFCD01860875

MF: C15H17ClFN MW: 265.7536

Pricing and Availability

Methyl 6-chloro-5-fluoropyridine-3-carboxylate

Catalog No.: AA00G44O

CAS No.:78686-78-9 MDL No.: MFCD14698136

MF: C7H5ClFNO2 MW: 189.5715

Pricing and Availability

1,2-DICHLORO-2,2-DIFLUORO-1-IODOETHANE

Catalog No.: AA00G42Z

CAS No.:812-06-6 MDL No.: MFCD02181181

MF: C2HCl2F2I MW: 260.8366

Pricing and Availability

Borate(1-), trifluoro-(1E)-1-propenyl-, potassium, (T-4)-

Catalog No.: AA00G44X

CAS No.:804565-39-7 MDL No.: MFCD09992882

MF: C3H5BF3K MW: 147.9763

Pricing and Availability

3-Bromo-4-(trifluoromethoxy)benzaldehyde

Catalog No.: AA00G44Z

CAS No.:85366-66-1 MDL No.: MFCD08458004

MF: C8H4BrF3O2 MW: 269.0154

Pricing and Availability

4-(Benzyloxy)-3-fluorophenol

Catalog No.: AA00G45Q

CAS No.:81228-25-3 MDL No.: MFCD01814875

MF: C13H11FO2 MW: 218.2236

Pricing and Availability

2,4,5-TRIFLUORO-BENZAMIDINE

Catalog No.: AA00G45Z

CAS No.:764648-43-3 MDL No.: MFCD05663405

MF: C7H5F3N2 MW: 174.1232

Pricing and Availability

POTASSIUM HEXAFLUOROGERMANATE

Catalog No.: AA00G46J

CAS No.:7783-73-5 MDL No.: MFCD00058801

MF: F6GeK2 MW: 264.8270

Pricing and Availability

VINYL(3,3,3-TRIFLUOROPROPYL)DIMETHYLSILANE

Catalog No.: AA00G46R

CAS No.:84442-77-3 MDL No.: MFCD00156507

MF: C7H13F3Si MW: 182.2588

Pricing and Availability

Pentafluorobenzenesulfonamide

Catalog No.: AA00G46U

CAS No.:778-36-9 MDL No.: MFCD02090183

MF: C6H2F5NO2S MW: 247.1426

Pricing and Availability

Bis(6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedionate)copper(II)

Catalog No.: AA00G46Q

CAS No.:80289-21-0 MDL No.: MFCD00156516

MF: C20H20Cu2F14O4++ MW: 717.4400

Pricing and Availability

N2-Isobutyryl-2'-fluoro-2'-deoxyguanosine

Catalog No.: AA00G4AP

CAS No.:80681-25-0 MDL No.: MFCD15145246

MF: C14H18FN5O5 MW: 355.3216

Pricing and Availability

4,4,4-TRIFLUORO-1-(1-NAPHTHYL)BUTANE-1,3-DIONE

Catalog No.: AA00G4B7

CAS No.:7639-68-1 MDL No.: MFCD00429745

MF: C14H9F3O2 MW: 266.2153

Pricing and Availability

1-[3-(Trifluoromethyl)phenyl]-1h-pyrazol-4-ol

Catalog No.: AA00G4DP

CAS No.:77458-38-9 MDL No.: MFCD03791208

MF: C10H7F3N2O MW: 228.1706

Pricing and Availability

2-bromo-1-fluoro-3-iodobenzene

Catalog No.: AA00G4E6

CAS No.:851368-08-6 MDL No.: MFCD09056796

MF: C6H3BrFI MW: 300.8949

Pricing and Availability

[(2-Fluorophenyl)amino](oxo)acetic acid

Catalog No.: AA00G4EH

CAS No.:84944-15-0 MDL No.: MFCD09864514

MF: C8H6FNO3 MW: 183.1365

Pricing and Availability

4-Fluoro-N-(piperidin-4-yl)benzamide

Catalog No.: AA00G4E3

CAS No.:75484-39-8 MDL No.: MFCD06740661

MF: C12H15FN2O MW: 222.2587

Pricing and Availability

5-(4-Fluorophenyl)-1,3,4-oxadiazol-2-amine

Catalog No.: AA00G4F4

CAS No.:7659-07-6 MDL No.: MFCD02073839

MF: C8H6FN3O MW: 179.1511

Pricing and Availability

Methyl 4-methoxy-2-(trifluoromethyl)benzoate

Catalog No.: AA00G4ER

CAS No.:773875-67-5 MDL No.: MFCD06204092

MF: C10H9F3O3 MW: 234.1719

Pricing and Availability

1-(2-Fluorobenzyl)-5-oxopyrrolidine-3-carboxylic acid

Catalog No.: AA00G4G6

CAS No.:845546-24-9 MDL No.: MFCD08164334

MF: C12H12FNO3 MW: 237.2270

Pricing and Availability

3-(4-Fluorobenzyloxy)-bromobenzene

Catalog No.: AA00G4GC

CAS No.:845866-52-6 MDL No.: MFCD06411657

MF: C13H10BrFO MW: 281.1203

Pricing and Availability

3-(2-Fluorophenyl)isoxazole-5-carboxylic acid

Catalog No.: AA00G4H0

CAS No.:842973-74-4 MDL No.: MFCD06011108

MF: C10H6FNO3 MW: 207.1579

Pricing and Availability

2-Bromo-4-fluorothiophenol

Catalog No.: AA00G4GL

CAS No.:773853-92-2 MDL No.: MFCD09475472

MF: C6H4BrFS MW: 207.0634

Pricing and Availability

3,5-Dichloro-2-(trifluoromethyl)pyridine

Catalog No.: AA00G4GU

CAS No.:7655-72-3 MDL No.: MFCD11226518

MF: C6H2Cl2F3N MW: 215.9880

Pricing and Availability

5,7-Difluoro-1,3-benzothiazol-2-amine

Catalog No.: AA00G4HM

CAS No.:788124-34-5 MDL No.: MFCD08444544

MF: C7H4F2N2S MW: 186.1819

Pricing and Availability

1-(4-Fluorobenzyl)-1h-1,2,4-triazol-3-amine

Catalog No.: AA00G4IN

CAS No.:832739-95-4 MDL No.: MFCD00021147

MF: C9H9FN4 MW: 192.1930

Pricing and Availability

3-Chloro-2-fluorobenzoyl fluoride

Catalog No.: AA00G4I7

CAS No.:85345-74-0 MDL No.: MFCD04972721

MF: C7H3ClF2O MW: 176.5479

Pricing and Availability

1-Fluoro-2-isothiocyanato-4-methylbenzene

Catalog No.: AA00G4IM

CAS No.:832113-98-1 MDL No.: MFCD05864298

MF: C8H6FNS MW: 167.2033

Pricing and Availability

1-(3-Fluorobenzyl)-5-oxopyrrolidine-3-carboxylic acid

Catalog No.: AA00G4J0

CAS No.:845546-23-8 MDL No.: MFCD09040073

MF: C12H12FNO3 MW: 237.2270

Pricing and Availability

3,5-Bis(difluoromethyl)-1h-pyrazole

Catalog No.: AA00G4JG

CAS No.:77614-79-0 MDL No.: MFCD03419821

MF: C5H4F4N2 MW: 168.0923

Pricing and Availability

2-Chloro-5-fluorobenzene-1-sulfonyl chloride

Catalog No.: AA00G4JR

CAS No.:82875-86-3 MDL No.: MFCD12026156

MF: C6H3Cl2FO2S MW: 229.0562

Pricing and Availability

1-Iodo-8h-perfluorooctane

Catalog No.: AA00G4IV

CAS No.:79162-64-4 MDL No.: MFCD00236712

MF: C8HF16I MW: 527.9725

Pricing and Availability

(4,4-Difluorocyclohexyl)methanamine

Catalog No.: AA00G4K3

CAS No.:810659-05-3 MDL No.: MFCD11113217

MF: C7H13F2N MW: 149.1816

Pricing and Availability

N-(5-Amino-2-fluorophenyl)acetamide

Catalog No.: AA00G4K9

CAS No.:75001-47-7 MDL No.: MFCD09049668

MF: C8H9FN2O MW: 168.1683

Pricing and Availability

N-(Trimethylsilyl)bis(trifluoromethanesulfonyl)imide

Catalog No.: AA00G4KU

CAS No.:82113-66-4 MDL No.: MFCD10566930

MF: C5H9F6NO4S2Si MW: 353.3352

Pricing and Availability

4-Iodo-5-methyl-3-(trifluoromethyl)-1h-pyrazole

Catalog No.: AA00G4LA

CAS No.:855343-07-6 MDL No.: MFCD18064539

MF: C5H4F3IN2 MW: 275.9983

Pricing and Availability

5,6-Difluorobenzimidazole

Catalog No.: AA00G4MO

CAS No.:78581-99-4 MDL No.: MFCD02031530

MF: C7H4F2N2 MW: 154.1169

Pricing and Availability

1-[5-[(3,4-dihydro-4-oxo-1-phthalazinyl)Methyl]-2-fluorobenzoyl]hexahydro-1H-1,4-diazepine

Catalog No.: AA00G4N4

CAS No.:763111-49-5 MDL No.: MFCD12913320

MF: C21H21FN4O2 MW: 380.4154

Pricing and Availability

5H-OCTAFLUOROPENTANOYL FLUORIDE

Catalog No.: AA00G4M5

CAS No.:813-03-6 MDL No.: MFCD00155902

MF: C5HF9O MW: 248.0465

Pricing and Availability

N-[(6S)-8-Fluoro-5,6-dihydro-4-(1-Methylethyl)-6-[(2S,4R)-tetrahydro-4-hydroxy-6-oxo-2H-pyran-2-yl]benzo[h]quinazolin-2-yl]-N-MethylMethanesulfonaMide

Catalog No.: AA00G4ND

CAS No.:854898-47-8 MDL No.: MFCD28358817

MF: C22H26FN3O5S MW: 463.5223

Pricing and Availability

ETOFENAMATE STEARATE

Catalog No.: AA00G4OK

CAS No.:81427-97-6 MDL No.: MFCD27966992

MF: C36H52F3NO5 MW: 635.7970

Pricing and Availability

6-alpha,9-alpha-difluoro-11-beta,16-alpha,17-alpha,21-tetrahydroxypregna-1,4-diene-3,20-dione

Catalog No.: AA00G4PI

CAS No.:807-38-5 MDL No.: MFCD01699004

MF: C21H26F2O6 MW: 412.4243

Pricing and Availability

2-(Chloromethyl)-6-(trifluoromethyl)pyridine

Catalog No.: AA00G4QP

CAS No.:849094-03-7 MDL No.: MFCD13188826

MF: C7H5ClF3N MW: 195.5695

Pricing and Availability

1,2-Dihydro-BetaMethasone 17,21-Dipropionate

Catalog No.: AA00G4QU

CAS No.:80163-83-3 MDL No.: MFCD31561959

MF: C28H39FO7 MW: 506.6035

Pricing and Availability

2-Fluoro-1-naphthalenecarboxaldehyde

Catalog No.: AA00G4SP

CAS No.:82128-49-2 MDL No.: MFCD18412309

MF: C11H7FO MW: 174.1711

Pricing and Availability

17ß-Carboxy-17-desoxydexamethasone

Catalog No.: AA00G4SR

CAS No.:75262-69-0 MDL No.: MFCD24386651

MF: C21H27FO4 MW: 362.4351

Pricing and Availability

3-[5-(2-Fluorophenyl)-1,2,4-oxadiazol-3-yl]benzoic Acid SodiuM Salt

Catalog No.: AA00G4U3

CAS No.:775304-59-1 MDL No.:

MF: C15H8FN2NaO3 MW: 306.2238

Pricing and Availability

FLORIFENINE

Catalog No.: AA00G4W5

CAS No.:83863-79-0 MDL No.: MFCD00869108

MF: C23H22F3N3O2 MW: 429.4349

Pricing and Availability

dexamethasone-biotin labelled

Catalog No.: AA00G4X2

CAS No.:85679-56-7 MDL No.:

MF: C36H53FN4O6S MW: 688.8926

Pricing and Availability

PF 514273

Catalog No.: AA00G4XF

CAS No.:851728-60-4 MDL No.: MFCD12032112

MF: C21H17Cl2F2N3O2 MW: 452.2814

Pricing and Availability

1,1-Difluorocyclopropane Dibenzosuberol

Catalog No.: AA00G4XZ

CAS No.:797790-94-4 MDL No.: MFCD31563344

MF: C16H12F2O MW: 258.2627

Pricing and Availability

N'-[(2Z)-Piperazin-2-ylidene]trifluoroacetohydrazide

Catalog No.: AA00G4YJ

CAS No.:763105-70-0 MDL No.: MFCD09833209

MF: C6H9F3N4O MW: 210.1571

Pricing and Availability

YM 2447690

Catalog No.: AA00G4YH

CAS No.:837424-39-2 MDL No.: MFCD23381171

MF: C26H24Cl2FN3O3 MW: 516.3915

Pricing and Availability

4-Amino-6-chloro-5-fluoropyrimidine

Catalog No.: AA00G4ZL

CAS No.:851984-15-1 MDL No.: MFCD14706712

MF: C4H3ClFN3 MW: 147.5381

Pricing and Availability

Cyclopropyl 3-fluorophenyl ketone

Catalog No.: AA00G4ZI

CAS No.:77972-82-8 MDL No.: MFCD03841220

MF: C10H9FO MW: 164.1763

Pricing and Availability

Phosphonic acid, [(3-broMo-7-cyano-2-naphthalenyl)difluoroMethyl]- (9CI)

Catalog No.: AA00G4ZH

CAS No.:809272-64-8 MDL No.: MFCD19443182

MF: C12H7BrF2NO3P MW: 362.0634

Pricing and Availability

AOI 987

Catalog No.: AA00G511

CAS No.:846022-21-7 MDL No.:

MF: C18H18BF4N3O3- MW: 411.1584

Pricing and Availability

Bromodifluoromethanesulfonylbenzene

Catalog No.: AA00G51A

CAS No.:80351-58-2 MDL No.: MFCD22628354

MF: C7H5BrF2O2S MW: 271.0792

Pricing and Availability

Fluticasone Acetate

Catalog No.: AA00G522

CAS No.:80474-24-4 MDL No.: MFCD21363602

MF: C24H29F3O5S MW: 486.5443

Pricing and Availability

5-Chloro-4-(trifluoromethyl)pyridine-2-carboxylic acid

Catalog No.: AA00G520

CAS No.:796090-31-8 MDL No.: MFCD18256834

MF: C7H3ClF3NO2 MW: 225.5524

Pricing and Availability

7-Fluoronaphthalene-1-carboxaldehyde

Catalog No.: AA00G52K

CAS No.:82128-59-4 MDL No.: MFCD17012406

MF: C11H7FO MW: 174.1711

Pricing and Availability

2-Chloro-5-(trifluoromethyl)pyrazine

Catalog No.: AA00G53L

CAS No.:799557-87-2 MDL No.: MFCD13189478

MF: C5H2ClF3N2 MW: 182.5310

Pricing and Availability

3-Chloro-4-fluoro-N-[4-[[2-(phenylcarbonyl)hydrazino]carbonyl]benzyl]benzenesulfonamide

Catalog No.: AA00G54F

CAS No.:852918-02-6 MDL No.: MFCD06683895

MF: C21H17ClFN3O4S MW: 461.8938

Pricing and Availability

3-[2-[4-(4-fluorobenzoyl)-1-piperidyl]ethyl]-2,7-dimethyl-4H-pyrido[1,2-a]pyrimidin-4-one

Catalog No.: AA00G55I

CAS No.:81043-56-3 MDL No.: MFCD00868044

MF: C24H26FN3O2 MW: 407.4805

Pricing and Availability

3-(3-(Trifluoromethyl)phenoxy)azetidine

Catalog No.: AA00G561

CAS No.:76263-23-5 MDL No.: MFCD09264493

MF: C10H10F3NO MW: 217.1877

Pricing and Availability

2-(2,2,2-Trifluoroethoxy)-6-chloropyridine

Catalog No.: AA00G563

CAS No.:77145-58-5 MDL No.: MFCD00077489

MF: C7H5ClF3NO MW: 211.5689

Pricing and Availability

N-[(6R)-8-Fluoro-5,6-dihydro-4-(1-Methylethyl)-6-[(2S,4R)-tetrahydro-4-hydroxy-6-oxo-2H-pyran-2-yl]benzo[h]quinazolin-2-yl]-N-MethylMethanesulfonaMide

Catalog No.: AA00G568

CAS No.:854898-46-7 MDL No.: MFCD28358814

MF: C22H26FN3O5S MW: 463.5223

Pricing and Availability

3,5-Difluoro-2-tributylstannylpyridine

Catalog No.: AA00G56J

CAS No.:765917-25-7 MDL No.: MFCD11109378

MF: C17H29F2NSn MW: 404.1167

Pricing and Availability

DerMorphin Trifluoroacetate

Catalog No.: AA00G56A

CAS No.:78331-26-7 MDL No.: MFCD26961119

MF: C42H51F3N8O12 MW: 916.8959

Pricing and Availability

Begacestat

Catalog No.: AA00G57G

CAS No.:769169-27-9 MDL No.: MFCD18782675

MF: C9H8ClF6NO3S2 MW: 391.7381

Pricing and Availability

4,5-Dibromo-6-(trifluoromethyl)pyrimidine

Catalog No.: AA00G57L

CAS No.:785777-94-8 MDL No.: MFCD10574961

MF: C5HBr2F3N2 MW: 305.8780

Pricing and Availability

(3-Fluoro-5-methylphenyl)methanamine

Catalog No.: AA00G58G

CAS No.:771573-02-5 MDL No.: MFCD06213636

MF: C8H10FN MW: 139.1701

Pricing and Availability

2,3-Difluoro-4-methoxybenzoyl chloride

Catalog No.: AA00G58D

CAS No.:849632-69-5 MDL No.: MFCD04115982

MF: C8H5ClF2O2 MW: 206.5739

Pricing and Availability

2,4-Difluorobenzeneethanol

Catalog No.: AA00G59G

CAS No.:81228-02-6 MDL No.: MFCD00142823

MF: C8H8F2O MW: 158.1453

Pricing and Availability

4-Fluorophenyl 4-(trans-4-pentylcyclohexyl)benzoate

Catalog No.: AA00G58V

CAS No.:79912-98-4 MDL No.: MFCD09750945

MF: C24H29FO2 MW: 368.4843

Pricing and Availability

3-Fluoro-2-methylbenzylamine

Catalog No.: AA00G58A

CAS No.:771573-36-5 MDL No.: MFCD06213676

MF: C8H10FN MW: 139.1701

Pricing and Availability

4'-Fluoro-2-hydroxychalcone

Catalog No.: AA00G590

CAS No.:76626-08-9 MDL No.: MFCD03788512

MF: C15H11FO2 MW: 242.2450

Pricing and Availability

2-(METHYLAMINO)BENZOTRIFLUORIDE HYDROCHLORIDE

Catalog No.: AA00G5BZ

CAS No.:845866-58-2 MDL No.: MFCD06411669

MF: C8H9ClF3N MW: 211.6120

Pricing and Availability

2-FLUORO-4-METHYLBENZYLAMINE

Catalog No.: AA00G586

CAS No.:771573-01-4 MDL No.: MFCD06213635

MF: C8H10FN MW: 139.1701

Pricing and Availability

(S)-2-AMINO-3-(2,4-DIFLUORO-PHENYL)-PROPIONIC ACID METHYL ESTER

Catalog No.: AA00G5BD

CAS No.:831191-82-3 MDL No.: MFCD08058339

MF: C10H11F2NO2 MW: 215.1966

Pricing and Availability

2-Amino-5-fluoro-n-methylbenzamide

Catalog No.: AA00G5C3

CAS No.:773846-62-1 MDL No.: MFCD11132594

MF: C8H9FN2O MW: 168.1683

Pricing and Availability

2-(Naphthalen-2-yloxy)-5-(trifluoromethyl)aniline

Catalog No.: AA00G5AZ

CAS No.:79567-22-9 MDL No.: MFCD00170934

MF: C17H12F3NO MW: 303.2785

Pricing and Availability

(2-Amino-5-chlorophenyl)(4-fluorophenyl)methanone

Catalog No.: AA00G5EI

CAS No.:784-40-7 MDL No.: MFCD07780289

MF: C13H9ClFNO MW: 249.6681

Pricing and Availability

(S)-1-(2,4-Difluorophenyl)ethanamine

Catalog No.: AA00G5GA

CAS No.:845252-02-0 MDL No.: MFCD06761834

MF: C8H9F2N MW: 157.1606

Pricing and Availability

6-Amino-3-bromo-2-fluorobenzonitrile

Catalog No.: AA00G5HL

CAS No.:845866-92-4 MDL No.: MFCD06657979

MF: C7H4BrFN2 MW: 215.0225

Pricing and Availability

Ethyl 2-Fluoro-5-iodobenzoate

Catalog No.: AA00G5J2

CAS No.:773136-66-6 MDL No.: MFCD06204769

MF: C9H8FIO2 MW: 294.0615

Pricing and Availability

2-CHLORO-1-DIFLUOROMETHYL-4-FLUOROBENZENE

Catalog No.: AA00G5IR

CAS No.:845866-83-3 MDL No.: MFCD06657966

MF: C7H4ClF3 MW: 180.5549

Pricing and Availability

2-(2,2-difluoroethoxy)ethanol

Catalog No.: AA00G5JX

CAS No.:853005-07-9 MDL No.: MFCD19442036

MF: C4H8F2O2 MW: 126.1019

Pricing and Availability

Methyl 2,4-difluoro-6-hydroxybenzoate

Catalog No.: AA00G5K5

CAS No.:773874-16-1 MDL No.: MFCD06203802

MF: C8H6F2O3 MW: 188.1282

Pricing and Availability