Product Index

2,2-diMethyl-2,3-dihydrobenzofuran-5-carbonitrile

Catalog No.: AA00H2M2

CAS No.:903556-72-9 MDL No.: MFCD09157535

MF: C11H11NO MW: 173.2111

Pricing and Availability

1-(5-Fluoropyridin-2-yl)ethanamine

Catalog No.: AA00H2ND

CAS No.:915720-57-9 MDL No.: MFCD18260255

MF: C7H9FN2 MW: 140.1582

Pricing and Availability

4-Hydroxy-3,3-dimethylcyclohexanone

Catalog No.: AA00H2O3

CAS No.:888325-29-9 MDL No.: MFCD18157601

MF: C8H14O2 MW: 142.1956

Pricing and Availability

2-Amino-5-bromothiazolo[5,4-b]pyridine

Catalog No.: AA00H2MJ

CAS No.:934266-82-7 MDL No.: MFCD11846492

MF: C6H4BrN3S MW: 230.0851

Pricing and Availability

5-(4-Chlorophenyl)-1h-pyrrolo[2,3-b]pyridine

Catalog No.: AA00H2O6

CAS No.:918516-27-5 MDL No.: MFCD22682656

MF: C13H9ClN2 MW: 228.6770

Pricing and Availability

Ethyl 4-oxo-3,4-dihydropyrrolo[2,1-f][1,2,4]triazine-6-carboxylate

Catalog No.: AA00H2ML

CAS No.:869067-01-6 MDL No.: MFCD11977144

MF: C9H9N3O3 MW: 207.1861

Pricing and Availability

N-{[(Prop-2-en-1-yl)oxy]carbonyl}glycine, ({[(Prop-2-en-1-yl)oxy]carbonyl}amino)acetic acid

Catalog No.: AA00H2NS

CAS No.:90711-56-1 MDL No.: MFCD02094411

MF: C6H9NO4 MW: 159.1400

Pricing and Availability

4-Methoxy-2-pentanol

Catalog No.: AA00H2O4

CAS No.:90971-84-9 MDL No.: MFCD09908261

MF: C6H14O2 MW: 118.1742

Pricing and Availability

4-Chloro-5-methyl-6-(2-methylpyridin-3-yloxy)pyrimidine

Catalog No.: AA00H2O2

CAS No.:930093-72-4 MDL No.: MFCD12756519

MF: C11H10ClN3O MW: 235.6696

Pricing and Availability

6,7-Dihydrothieno[3,2-d]pyrimidine-2,4-diol

Catalog No.: AA00H2MF

CAS No.:913581-92-7 MDL No.: MFCD13181524

MF: C6H6N2O2S MW: 170.1890

Pricing and Availability

(R)-2-Methyl-4-tert-butyl carbonylpiperazine

Catalog No.: AA00H2MR

CAS No.:909409-91-2 MDL No.: MFCD08458967

MF: C10H20N2O MW: 184.2786

Pricing and Availability

N-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)benzamide

Catalog No.: AA00H2P2

CAS No.:935660-75-6 MDL No.: MFCD14706697

MF: C19H22BNO3 MW: 323.1939

Pricing and Availability

9-Bromo-10-[4-(2-naphthyl)phenyl]anthracene

Catalog No.: AA00H2OF

CAS No.:866611-29-2 MDL No.: MFCD20486476

MF: C30H19Br MW: 459.3759

Pricing and Availability

5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-7-tosyl-7H-pyrrolo[2,3-d]pyrimidine

Catalog No.: AA00H2OC

CAS No.:934178-97-9 MDL No.: MFCD17214383

MF: C19H22BN3O4S MW: 399.2717

Pricing and Availability

AcetaMide, 2-[[bis(4-fluorophenyl)Methyl]sulfinyl]-N-hydroxy-

Catalog No.: AA00H2OT

CAS No.:90212-80-9 MDL No.: MFCD29036740

MF: C15H13F2NO3S MW: 325.3304

Pricing and Availability

9-Hexyl-2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9h-carbazole

Catalog No.: AA00H2P7

CAS No.:871696-12-7 MDL No.: MFCD30187269

MF: C30H43B2NO4 MW: 503.2887

Pricing and Availability

8-Bromo-7-quinolinol

Catalog No.: AA00H2OB

CAS No.:90224-71-8 MDL No.: MFCD13188513

MF: C9H6BrNO MW: 224.0540

Pricing and Availability

9-(4-Bromophenyl)-10-(naphthalen-2-yl)anthracene

Catalog No.: AA00H2OD

CAS No.:936854-62-5 MDL No.: MFCD26407508

MF: C30H19Br MW: 459.3759

Pricing and Availability

Benzenamine, 4-(2-naphthalenyl)-N-phenyl

Catalog No.: AA00H2Q9

CAS No.:897671-79-3 MDL No.: MFCD30478546

MF: C22H17N MW: 295.3771

Pricing and Availability

2-(Ethoxycarbonyl)thiazole-4-carboxylic acid

Catalog No.: AA00H2QX

CAS No.:911466-96-1 MDL No.: MFCD11110995

MF: C7H7NO4S MW: 201.1998

Pricing and Availability

4-(4-Boc-Piperazinomethyl)phenylboronic acid, pinacol ester

Catalog No.: AA00H2QK

CAS No.:936694-19-8 MDL No.: MFCD16294502

MF: C22H35BN2O4 MW: 402.3353

Pricing and Availability

1-Boc-2-(3-bromophenyl)piperazine

Catalog No.: AA00H2QN

CAS No.:886767-65-3 MDL No.: MFCD07782036

MF: C15H21BrN2O2 MW: 341.2434

Pricing and Availability

5-Bromo-1-methyl-1H-pyrazolo[3,4-b]pyridine

Catalog No.: AA00H2Q3

CAS No.:887115-56-2 MDL No.: MFCD16112604

MF: C7H6BrN3 MW: 212.0466

Pricing and Availability

5-Bromo-3-cyclopropyl-1H-indazole

Catalog No.: AA00H2R2

CAS No.:911305-80-1 MDL No.: MFCD18837635

MF: C10H9BrN2 MW: 237.0959

Pricing and Availability

1,10-Phenanthroline-5-carbaldehyde

Catalog No.: AA00H2RP

CAS No.:91804-75-0 MDL No.: MFCD20528237

MF: C13H8N2O MW: 208.2154

Pricing and Availability

N1,N1,3-Trimethylbutane-1,3-diamine

Catalog No.: AA00H2Q1

CAS No.:933738-55-7 MDL No.: MFCD11846139

MF: C7H18N2 MW: 130.2312

Pricing and Availability

N-[4-(1-Naphthyl)phenyl]-4-biphenylamine

Catalog No.: AA00H2P3

CAS No.:897921-59-4 MDL No.: MFCD11112864

MF: C28H21N MW: 371.4730

Pricing and Availability

1-BOC-Pyrrolo[2,3-b]pyridine-3,5-diboronic acid, pinacol ester

Catalog No.: AA00H2R5

CAS No.:942070-54-4 MDL No.: MFCD12407267

MF: C24H36B2N2O6 MW: 470.1744

Pricing and Availability

2-Amino-5-chloro-3-methoxypyrazine

Catalog No.: AA00H2QH

CAS No.:874-31-7 MDL No.: MFCD11520878

MF: C5H6ClN3O MW: 159.5736

Pricing and Availability

(2S,4R)-1-((S)-2-((Cyclopentyloxy)carbonyl)-3,3-dimethylbutanoyl)-4-hydroxypyrrolidine-2-carboxylic acid

Catalog No.: AA00H2RB

CAS No.:877069-25-5 MDL No.: MFCD28125613

MF: C17H27NO6 MW: 341.3994

Pricing and Availability

tert-Butyl (2-chloropyridin-4-yl)methylcarbamate

Catalog No.: AA00H2RZ

CAS No.:916210-27-0 MDL No.: MFCD09028165

MF: C11H15ClN2O2 MW: 242.7020

Pricing and Availability

cis-Dimethyl 1-benzylpyrrolidine-3,4-dicarboxylate

Catalog No.: AA00H2QY

CAS No.:87813-06-7 MDL No.: MFCD09910273

MF: C15H19NO4 MW: 277.3157

Pricing and Availability

4-Chlorothieno[3,2-d]pyrimidine-6-carboxylic acid

Catalog No.: AA00H2QO

CAS No.:875515-76-7 MDL No.: MFCD11846188

MF: C7H3ClN2O2S MW: 214.6289

Pricing and Availability

4-(3-Pyridinyl)phenylboronic acid pinacol ester

Catalog No.: AA00H2R6

CAS No.:929203-04-3 MDL No.: MFCD11973623

MF: C17H20BNO2 MW: 281.1572

Pricing and Availability

3-Borono-5-fluoro-4-methylbenzoic acid

Catalog No.: AA00H2R9

CAS No.:917223-87-1 MDL No.: MFCD19440934

MF: C8H8BFO4 MW: 197.9561

Pricing and Availability

1-Boc-4-methyl-4-(4-methylpiperazin-1-yl)piperidine

Catalog No.: AA00H2QR

CAS No.:864369-94-8 MDL No.: MFCD09743702

MF: C16H31N3O2 MW: 297.4362

Pricing and Availability

Methyl 4-acetylamino-2-methylbenzate

Catalog No.: AA00H2RY

CAS No.:91133-71-0 MDL No.: MFCD11042857

MF: C11H13NO3 MW: 207.2258

Pricing and Availability

1-tert-Butyl 2-methyl 4-hydroxypyrrolidine-1,2-dicarboxylate

Catalog No.: AA00H2RC

CAS No.:897046-42-3 MDL No.: MFCD04115496

MF: C11H19NO5 MW: 245.2723

Pricing and Availability

1-Benzo[1,3]dioxol-5-yl-cyclopropanecarboxylic acid

Catalog No.: AA00H2SH

CAS No.:862574-89-8 MDL No.: MFCD09907922

MF: C11H10O4 MW: 206.1947

Pricing and Availability

5-Bromo-3-methoxypyrazin-2(1h)-one

Catalog No.: AA00H2SQ

CAS No.:89282-38-2 MDL No.: MFCD22200185

MF: C5H5BrN2O2 MW: 205.0094

Pricing and Availability

2-Bromo-n-(5-methyl-isoxazol-3-yl)-acetamide

Catalog No.: AA00H2SA

CAS No.:92947-26-7 MDL No.: MFCD06194841

MF: C6H7BrN2O2 MW: 219.0360

Pricing and Availability

3-Methyl-4-(trifluoromethyl)benzoic acid

Catalog No.: AA00H2ST

CAS No.:871571-29-8 MDL No.: MFCD13185723

MF: C9H7F3O2 MW: 204.1459

Pricing and Availability

3-Chloro-4-methyl-1-benzothiophene-2-carboxylic acid

Catalog No.: AA00H2RS

CAS No.:923772-93-4 MDL No.: MFCD08444746

MF: C10H7ClO2S MW: 226.6794

Pricing and Availability

N-(3-Methylbutan-2-yl)cyclopropanamine

Catalog No.: AA00H2SS

CAS No.:926204-43-5 MDL No.: MFCD09044869

MF: C8H17N MW: 127.2273

Pricing and Availability

2-(1H-Imidazol-2-yl)piperidine

Catalog No.: AA00H2SU

CAS No.:933725-12-3 MDL No.: MFCD11111761

MF: C8H13N3 MW: 151.2089

Pricing and Availability

4,5,6,7-Tetrahydro-2h-pyrazolo[4,3-c]pyridine

Catalog No.: AA00H2RU

CAS No.:933742-87-1 MDL No.: MFCD13176187

MF: C6H9N3 MW: 123.1558

Pricing and Availability

FBPase-1 Inhibitor

Catalog No.: AA00H2SL

CAS No.:883973-99-7 MDL No.: MFCD22581250

MF: C13H7Cl3N2O3S MW: 377.6303

Pricing and Availability

(S)-3-Amino-2-methylpropanoic acid hydrochloride

Catalog No.: AA00H2RK

CAS No.:925704-45-6 MDL No.: MFCD12198195

MF: C4H10ClNO2 MW: 139.5807

Pricing and Availability

tert-Butyl 4-oxohexahydro-1H-isoindole-2(3H)-carboxylate

Catalog No.: AA00H2RF

CAS No.:879687-92-0 MDL No.: MFCD17170012

MF: C13H21NO3 MW: 239.3107

Pricing and Availability

3-Iodo-1h-indazol-6-amine

Catalog No.: AA00H2SP

CAS No.:885519-20-0 MDL No.: MFCD07781651

MF: C7H6IN3 MW: 259.0471

Pricing and Availability

(2-Phenyl-1,3-thiazol-5-yl)methanol

Catalog No.: AA00H2SR

CAS No.:859485-91-9 MDL No.: MFCD09694149

MF: C10H9NOS MW: 191.2496

Pricing and Availability

Heparitin, sulfate

Catalog No.: AA00H2T1

CAS No.:9050-30-0 MDL No.:

MF: C26H36N3O39S6-------- MW: 1206.9507

Pricing and Availability

tert-Butyl (4-fluoropiperidin-4-yl)methylcarbamate

Catalog No.: AA00H2TF

CAS No.:871022-62-7 MDL No.: MFCD11973738

MF: C11H21FN2O2 MW: 232.2950

Pricing and Availability

2-Bromo-6-(trifluoromethyl)benzonitrile

Catalog No.: AA00H2SV

CAS No.:914637-35-7 MDL No.: MFCD08741382

MF: C8H3BrF3N MW: 250.0153

Pricing and Availability

GSK 561679A

Catalog No.: AA00H2UG

CAS No.:885220-61-1 MDL No.: MFCD19443727

MF: C22H26N6O2 MW: 406.4808

Pricing and Availability

6-Nitro-2-quinazolinamine

Catalog No.: AA00H2TK

CAS No.:882670-94-2 MDL No.: MFCD09999244

MF: C8H6N4O2 MW: 190.1588

Pricing and Availability

2-(3-Methyloxetan-3-yl)ethanol

Catalog No.: AA00H2TL

CAS No.:88214-48-6 MDL No.: MFCD17215858

MF: C6H12O2 MW: 116.1583

Pricing and Availability

1-Bromo-2-chloro-4-ethoxy-3-fluorobenzene

Catalog No.: AA00H2U8

CAS No.:909122-17-4 MDL No.: MFCD19440929

MF: C8H7BrClFO MW: 253.4960

Pricing and Availability

1-Benzyl 4-tert-butyl piperidine-1,4-dicarboxylate

Catalog No.: AA00H2U2

CAS No.:882738-24-1 MDL No.: MFCD04038489

MF: C18H25NO4 MW: 319.3954

Pricing and Availability

2-(1-Methyl-1H-pyrazol-5-yl)pyridine

Catalog No.: AA00H2TI

CAS No.:938066-21-8 MDL No.: MFCD19105119

MF: C9H9N3 MW: 159.1879

Pricing and Availability

tert-Butyl 7-oxo-3-azabicyclo[3.3.1]nonane-3-carboxylate

Catalog No.: AA00H2UW

CAS No.:909135-31-5 MDL No.: MFCD22416302

MF: C13H21NO3 MW: 239.3107

Pricing and Availability

Benzyl 2-carbamoylpyrrolidine-1-carboxylate

Catalog No.: AA00H2VM

CAS No.:93188-01-3 MDL No.: MFCD04115336

MF: C13H16N2O3 MW: 248.2777

Pricing and Availability

4-ThiazolecarboxaMide, N-(6-benzoyl-1H-benziMidazol-2-yl)-2-(1-thieno[3,2-d]pyriMidin-4-yl-4-piperidinyl)-

Catalog No.: AA00H2V5

CAS No.:913822-46-5 MDL No.: MFCD18206785

MF: C29H23N7O2S2 MW: 565.6686

Pricing and Availability

1-Methyl-2-phenylhydrazine hydrochloride

Catalog No.: AA00H2UC

CAS No.:92304-54-6 MDL No.: MFCD09996928

MF: C7H11ClN2 MW: 158.6286

Pricing and Availability

N-(2,4-Difluoro-3-formylphenyl)propane-1-sulfonamide

Catalog No.: AA00H2VX

CAS No.:918523-58-7 MDL No.: MFCD08443727

MF: C10H11F2NO3S MW: 263.2610

Pricing and Availability

(S)-3-Amino-1-methyl-piperidine

Catalog No.: AA00H2VW

CAS No.:902152-76-5 MDL No.: MFCD11894699

MF: C6H14N2 MW: 114.1888

Pricing and Availability

Chaetominine

Catalog No.: AA00H2VA

CAS No.:918659-56-0 MDL No.: MFCD22380597

MF: C22H18N4O4 MW: 402.4027

Pricing and Availability

(1,4-Dioxan-2-yl)-N-methylmethanamine hydrochloride

Catalog No.: AA00H2X7

CAS No.:918621-33-7 MDL No.: MFCD20278260

MF: C6H14ClNO2 MW: 167.6339

Pricing and Availability

3-Methyl-3-phenylmorpholine

Catalog No.: AA00H2WD

CAS No.:933689-07-7 MDL No.: MFCD09901670

MF: C11H15NO MW: 177.2429

Pricing and Availability

2-(3,4-Dihydroquinolin-1(2h)-yl)ethanamine dihydrochloride

Catalog No.: AA00H2XU

CAS No.:890713-92-5 MDL No.: MFCD06796265

MF: C11H18Cl2N2 MW: 249.1800

Pricing and Availability

3-(4-Hydroxyphenyl)hex-4-ynoic acid

Catalog No.: AA00H2W2

CAS No.:865233-34-7 MDL No.: MFCD21605732

MF: C12H12O3 MW: 204.2219

Pricing and Availability

(S)-tert-Butyl 2-acetylpyrrolidine-1-carboxylate

Catalog No.: AA00H2X0

CAS No.:91550-08-2 MDL No.: MFCD11975893

MF: C11H19NO3 MW: 213.2735

Pricing and Availability

4-Chloro-3-(pyridin-2-yl)benzenamine

Catalog No.: AA00H2WC

CAS No.:879088-41-2 MDL No.: MFCD12024455

MF: C11H9ClN2 MW: 204.6556

Pricing and Availability

1-Benzyl-3-methylpiperidin-4-ol

Catalog No.: AA00H2XJ

CAS No.:91600-19-0 MDL No.: MFCD09701317

MF: C13H19NO MW: 205.2961

Pricing and Availability

1-Methylcyclohexan-1-amine hydrochloride

Catalog No.: AA00H2XP

CAS No.:89854-70-6 MDL No.: MFCD01735171

MF: C7H16ClN MW: 149.6616

Pricing and Availability

1-(4-Fluoro-benzoyl)-piperidin-4-one

Catalog No.: AA00H2XE

CAS No.:866144-28-7 MDL No.: MFCD04115038

MF: C12H12FNO2 MW: 221.2276

Pricing and Availability

1-(4-Bromothiophen-3-yl)-N-methylmethanamine

Catalog No.: AA00H2WS

CAS No.:921938-63-8 MDL No.: MFCD12913730

MF: C6H8BrNS MW: 206.1034

Pricing and Availability

1-Oxazol-4-yl-ethanone

Catalog No.: AA00H2XQ

CAS No.:859046-10-9 MDL No.: MFCD18250706

MF: C5H5NO2 MW: 111.0987

Pricing and Availability

1-(1-Benzylpyrrolidin-3-yl)ethanone

Catalog No.: AA00H2XB

CAS No.:87088-73-1 MDL No.: MFCD11845477

MF: C13H17NO MW: 203.2802

Pricing and Availability

2-(3-Bromophenyl)cyclopropanecarboxylic acid

Catalog No.: AA00H2XV

CAS No.:91445-84-0 MDL No.: MFCD11895900

MF: C10H9BrO2 MW: 241.0813

Pricing and Availability

1-(Piperidin-3-yl)ethanone hydrochloride

Catalog No.: AA00H2XS

CAS No.:89895-05-6 MDL No.: MFCD12022655

MF: C7H14ClNO MW: 163.6452

Pricing and Availability

2-(5-Bromothiophen-2-yl)ethan-1-amine

Catalog No.: AA00H2Y2

CAS No.:86423-64-5 MDL No.: MFCD04114538

MF: C6H8BrNS MW: 206.1034

Pricing and Availability

2-Amino-1-(pyridin-2-yl)ethan-1-ol dihydrochloride

Catalog No.: AA00H2YB

CAS No.:90345-24-7 MDL No.: MFCD09028160

MF: C7H12Cl2N2O MW: 211.0890

Pricing and Availability

2-(Bicyclo[2.2.1]heptan-2-yl)ethanamine

Catalog No.: AA00H2YG

CAS No.:90949-06-7 MDL No.: MFCD10451172

MF: C9H17N MW: 139.2380

Pricing and Availability

(S)-4-(1-Aminoethyl)benzoic acid hydrochloride

Catalog No.: AA00H2X5

CAS No.:916211-64-8 MDL No.: MFCD09832181

MF: C9H12ClNO2 MW: 201.6501

Pricing and Availability

3-Methoxybenzene-1,2-diamine dihydrochloride

Catalog No.: AA00H2Y6

CAS No.:862270-90-4 MDL No.: MFCD12913694

MF: C7H12Cl2N2O MW: 211.0890

Pricing and Availability

2,8-Dibromoquinoline

Catalog No.: AA00H2Y9

CAS No.:871507-79-8 MDL No.: MFCD09788633

MF: C9H5Br2N MW: 286.9507

Pricing and Availability

Methyl 2-amino-5-chloro-4-fluorobenzoate

Catalog No.: AA00H2YE

CAS No.:936540-27-1 MDL No.: MFCD15523634

MF: C8H7ClFNO2 MW: 203.5981

Pricing and Availability

2-(4-Bromophenyl)cyclopropanamine

Catalog No.: AA00H2XX

CAS No.:90561-75-4 MDL No.: MFCD11936661

MF: C9H10BrN MW: 212.0864

Pricing and Availability

2-Chloro-7-iodo-5h-pyrrolo[2,3-b]pyrazine

Catalog No.: AA00H2YI

CAS No.:889447-20-5 MDL No.: MFCD12755891

MF: C6H3ClIN3 MW: 279.4656

Pricing and Availability

3-(2-Bromo-ethyl)-oxazolidin-2-one

Catalog No.: AA00H2Z0

CAS No.:89869-36-3 MDL No.: MFCD11131211

MF: C5H8BrNO2 MW: 194.0265

Pricing and Availability

2-(Thiophen-2-yl)cyclopropanecarboxylic acid

Catalog No.: AA00H2YW

CAS No.:90111-23-2 MDL No.: MFCD11186844

MF: C8H8O2S MW: 168.2129

Pricing and Availability

2-Methyl-2,3-dihydro-1H-indene-2-carboxylic acid

Catalog No.: AA00H2YO

CAS No.:91142-58-4 MDL No.: MFCD16658798

MF: C11H12O2 MW: 176.2118

Pricing and Availability

2-(Piperidin-4-yl)-1,2,3,4-tetrahydroisoquinoline dihydrochloride

Catalog No.: AA00H2YS

CAS No.:871113-10-9 MDL No.: MFCD06796139

MF: C14H22Cl2N2 MW: 289.2439

Pricing and Availability

1-(Pyrrolidin-3-yl)ethanone

Catalog No.: AA00H2Z6

CAS No.:876505-26-9 MDL No.: MFCD11845471

MF: C6H11NO MW: 113.1576

Pricing and Availability

Methyl 3-amino-5-(trifluoromethyl)picolinate

Catalog No.: AA00H2ZA

CAS No.:866775-17-9 MDL No.: MFCD18259060

MF: C8H7F3N2O2 MW: 220.1486

Pricing and Availability

2-Methyl-2-(tetrahydro-2H-pyran-4-yl)propanoic acid

Catalog No.: AA00H2YN

CAS No.:861444-92-0 MDL No.: MFCD18374731

MF: C9H16O3 MW: 172.2215

Pricing and Availability

2-methyl-5-(tetramethyl-1,3,2-dioxaborolan-2-yl)quinoline

Catalog No.: AA00H2YQ

CAS No.:876922-75-7 MDL No.: MFCD22418301

MF: C16H20BNO2 MW: 269.1465

Pricing and Availability

(1H-1,2,4-Triazol-5-ylmethyl)amine dihydrochloride

Catalog No.: AA00H2YL

CAS No.:859791-21-2 MDL No.: MFCD11506345

MF: C3H8Cl2N4 MW: 171.0284

Pricing and Availability

2-bromo-6-methoxyaniline hydrochloride

Catalog No.: AA00H2YH

CAS No.:861084-02-8 MDL No.: MFCD24368592

MF: C7H9BrClNO MW: 238.5095

Pricing and Availability