Product Index

4-[(2-methoxyphenyl)amino]benzoic acid

Catalog No.: AA01BRFC

CAS No.:1275482-57-9 MDL No.: MFCD17315878

MF: C14H13NO3 MW: 243.2579

Pricing and Availability

2-(2-oxopyrrolidin-3-yl)acetic acid

Catalog No.: AA01BRG0

CAS No.:54729-73-6 MDL No.: MFCD22070739

MF: C6H9NO3 MW: 143.1406

Pricing and Availability

[(2S)-1-(triphenylmethyl)aziridin-2-yl]methyl methanesulfonate

Catalog No.: AA01BRGH

CAS No.:1095273-25-8 MDL No.: MFCD30535753

MF: C23H23NO3S MW: 393.4986

Pricing and Availability

4-(2-Chloroethyl)benzamide

Catalog No.: AA01BRG9

CAS No.:181115-67-3 MDL No.: MFCD20637141

MF: C9H10ClNO MW: 183.6348

Pricing and Availability

3,3-dimethoxybutan-1-amine

Catalog No.: AA01BRGA

CAS No.:1368920-29-9 MDL No.: MFCD21876654

MF: C6H15NO2 MW: 133.1888

Pricing and Availability

2,4-dimethoxypyridine-3-carboxylic acid hydrochloride

Catalog No.: AA01BRGI

CAS No.:2060020-59-7 MDL No.: MFCD30535754

MF: C8H10ClNO4 MW: 219.6223

Pricing and Availability

5-methyl-1-propyl-2,3-dihydro-1H-indole-2,3-dione

Catalog No.: AA01BRGO

CAS No.:63725-87-1 MDL No.: MFCD01898130

MF: C12H13NO2 MW: 203.2371

Pricing and Availability

(3S)-4-amino-3-methylbutanoic acid hydrochloride

Catalog No.: AA01BRGW

CAS No.:179806-55-4 MDL No.: MFCD30535760

MF: C5H12ClNO2 MW: 153.6073

Pricing and Availability

4-((2-isopropylphenyl)amino)benzoic acid

Catalog No.: AA01BRGQ

CAS No.:1522104-76-2 MDL No.: MFCD18978838

MF: C16H17NO2 MW: 255.3117

Pricing and Availability

2-(3,4-difluorophenyl)-N-(2-iodoethyl)acetamide

Catalog No.: AA01BRH6

CAS No.:1567057-05-9 MDL No.: MFCD26813232

MF: C10H10F2INO MW: 325.0938

Pricing and Availability

3-(propan-2-yloxy)azetidine, methanesulfonic acid

Catalog No.: AA01BRGL

CAS No.:2060020-62-2 MDL No.: MFCD30535756

MF: C7H17NO4S MW: 211.2792

Pricing and Availability

7-chlorothieno[2,3-c]pyridine-2-carbaldehyde

Catalog No.: AA01BRH7

CAS No.:1367965-39-6 MDL No.: MFCD22059349

MF: C8H4ClNOS MW: 197.6415

Pricing and Availability

5-bromo-3,4-dihydro-2H-1-benzopyran-3-amine hydrochloride

Catalog No.: AA01BRHI

CAS No.:2059971-55-8 MDL No.: MFCD30535773

MF: C9H11BrClNO MW: 264.5467

Pricing and Availability

6-azabicyclo[3.2.1]octan-3-ol

Catalog No.: AA01BRGX

CAS No.:2060051-06-9 MDL No.: MFCD30535761

MF: C7H13NO MW: 127.1842

Pricing and Availability

4-[(2,4-dimethoxyphenyl)amino]benzoic acid

Catalog No.: AA01BRH8

CAS No.:1455122-90-3 MDL No.: MFCD30535767

MF: C15H15NO4 MW: 273.2839

Pricing and Availability

4-((2-(tert-butyl)phenyl)amino)benzoic acid

Catalog No.: AA01BRH9

CAS No.:1410319-79-7 MDL No.: MFCD30535768

MF: C17H19NO2 MW: 269.3383

Pricing and Availability

O-(4,4,4-trifluorobutyl)hydroxylamine

Catalog No.: AA01BRHW

CAS No.:780037-64-1 MDL No.: MFCD12912193

MF: C4H8F3NO MW: 143.1076

Pricing and Availability

5-chloro-2-(2,2-difluoroethoxy)pyridine

Catalog No.: AA01BRHM

CAS No.:1553333-96-2 MDL No.: MFCD24281311

MF: C7H6ClF2NO MW: 193.5784

Pricing and Availability

3-amino-2,3-dimethylbutan-2-ol hydrochloride

Catalog No.: AA01BRHD

CAS No.:859811-49-7 MDL No.: MFCD21607253

MF: C6H16ClNO MW: 153.6503

Pricing and Availability

[1-(oxan-2-yl)cyclobutyl]methanamine

Catalog No.: AA01BRI1

CAS No.:2060007-45-4 MDL No.: MFCD30535784

MF: C10H19NO MW: 169.2640

Pricing and Availability

3-(difluoromethoxy)-5-fluoroaniline

Catalog No.: AA01BRIH

CAS No.:1261583-91-8 MDL No.: MFCD18385076

MF: C7H6F3NO MW: 177.1238

Pricing and Availability

1-(1-methylpiperidin-2-yl)propan-2-ol

Catalog No.: AA01BRHN

CAS No.:49624-51-3 MDL No.: MFCD01700707

MF: C9H19NO MW: 157.2533

Pricing and Availability

(3,4-dihydro-1H-2-benzopyran-5-yl)methanamine

Catalog No.: AA01BRIU

CAS No.:1511919-87-1 MDL No.: MFCD26670281

MF: C10H13NO MW: 163.2163

Pricing and Availability

(5,5-dimethyl-4,5,6,7-tetrahydro-1,2-benzoxazol-3-yl)methanol

Catalog No.: AA01BRJE

CAS No.:1504762-46-2 MDL No.: MFCD23905158

MF: C10H15NO2 MW: 181.2316

Pricing and Availability

2-ethoxy-2-(oxan-4-yl)acetonitrile

Catalog No.: AA01BRJL

CAS No.:1465134-86-4 MDL No.: MFCD21684124

MF: C9H15NO2 MW: 169.2209

Pricing and Availability

DIFLUORO(3-BROMOPYRIDIN-2-YL)ACETIC ACID

Catalog No.: AA01BRJH

CAS No.:1216383-52-6 MDL No.: MFCD12827871

MF: C7H4BrF2NO2 MW: 252.0130

Pricing and Availability

1-Methyl-5-oxo-d-proline

Catalog No.: AA01BRJ5

CAS No.:952345-00-5 MDL No.: MFCD26937700

MF: C6H9NO3 MW: 143.1406

Pricing and Availability

3-methoxythiolane-3-carbonitrile

Catalog No.: AA01BRJK

CAS No.:1448128-83-3 MDL No.: MFCD21684427

MF: C6H9NOS MW: 143.2068

Pricing and Availability

2-(3-amino-5-bromophenyl)acetic acid hydrochloride

Catalog No.: AA01BRJW

CAS No.:2060063-86-5 MDL No.: MFCD30535807

MF: C8H9BrClNO2 MW: 266.5196

Pricing and Availability

3-(chloromethyl)-5,5-dimethyl-4,5,6,7-tetrahydro-1,2-benzoxazole

Catalog No.: AA01BRJD

CAS No.:1525858-09-6 MDL No.: MFCD23905283

MF: C10H14ClNO MW: 199.6773

Pricing and Availability

4-(dimethylamino)pentanoic acid hydrochloride

Catalog No.: AA01BRJ7

CAS No.:2060062-06-6 MDL No.: MFCD30535800

MF: C7H16ClNO2 MW: 181.6604

Pricing and Availability

4-(chloromethyl)-1-methoxyisoquinoline

Catalog No.: AA01BRJQ

CAS No.:1691058-33-9 MDL No.: MFCD30311029

MF: C11H10ClNO MW: 207.6562

Pricing and Availability

EMPO

Catalog No.: AA01BRJA

CAS No.:61856-99-3 MDL No.: MFCD04038184

MF: C8H13NO3 MW: 171.1937

Pricing and Availability

2-cyclopentyl-2-ethoxyacetonitrile

Catalog No.: AA01BRJM

CAS No.:1495445-01-6 MDL No.: MFCD21684203

MF: C9H15NO MW: 153.2215

Pricing and Availability

DECAHYDRO-QUINOLIN-4-OL, Mixture of diastereomers

Catalog No.: AA01BRJP

CAS No.:49788-04-7 MDL No.: MFCD02233166

MF: C9H17NO MW: 155.2374

Pricing and Availability

2-amino-1-(2-propoxyphenyl)ethan-1-one hydrochloride

Catalog No.: AA01BRK1

CAS No.:2059942-05-9 MDL No.: MFCD30535809

MF: C11H16ClNO2 MW: 229.7032

Pricing and Availability

2-ethoxy-2-(oxolan-3-yl)acetonitrile

Catalog No.: AA01BRJO

CAS No.:1496926-11-4 MDL No.: MFCD21684198

MF: C8H13NO2 MW: 155.1943

Pricing and Availability

methyl 2-(aminooxy)-3-methoxypropanoate hydrochloride

Catalog No.: AA01BRKE

CAS No.:2060042-23-9 MDL No.: MFCD30535814

MF: C5H12ClNO4 MW: 185.6061

Pricing and Availability

2-(2-(Pyridin-4-ylmethoxy)phenyl)acetic acid

Catalog No.: AA01BRKM

CAS No.:1521945-79-8 MDL No.: MFCD22997921

MF: C14H13NO3 MW: 243.2579

Pricing and Availability

2-amino-3-(4-fluorophenyl)-2-methylpropan-1-ol hydrochloride

Catalog No.: AA01BRKH

CAS No.:2059955-16-5 MDL No.: MFCD30535817

MF: C10H15ClFNO MW: 219.6836

Pricing and Availability

2-amino-3-(4-chlorophenyl)-2-methylpropanoic acid hydrochloride

Catalog No.: AA01BRKA

CAS No.:21158-70-3 MDL No.: MFCD30535811

MF: C10H13Cl2NO2 MW: 250.1217

Pricing and Availability

2-amino-3-(4-bromophenyl)-2-methylpropan-1-ol hydrochloride

Catalog No.: AA01BRKF

CAS No.:2059927-62-5 MDL No.: MFCD30535815

MF: C10H15BrClNO MW: 280.5892

Pricing and Availability

3-benzoyl-4-fluoroaniline hydrochloride

Catalog No.: AA01BRKC

CAS No.:65611-44-1 MDL No.: MFCD30535813

MF: C13H11ClFNO MW: 251.6839

Pricing and Availability

1-(pyrrolidin-1-yl)cyclobutane-1-carboxylic acid hydrochloride

Catalog No.: AA01BRKB

CAS No.:2060033-65-8 MDL No.: MFCD30535812

MF: C9H16ClNO2 MW: 205.6818

Pricing and Availability

(4-cyclohexylphenyl)methanesulfonamide

Catalog No.: AA01BRKS

CAS No.:2060042-31-9 MDL No.: MFCD30535821

MF: C13H19NO2S MW: 253.3605

Pricing and Availability

methyl 8-methyl-1,2,3,4-tetrahydroquinoline-6-carboxylate

Catalog No.: AA01BRKW

CAS No.:2089256-99-3 MDL No.: MFCD30724118

MF: C12H15NO2 MW: 205.2530

Pricing and Availability

ethyl 2-methylmorpholine-2-carboxylate hydrochloride

Catalog No.: AA01BRL1

CAS No.:2060062-09-9 MDL No.: MFCD30535825

MF: C8H16ClNO3 MW: 209.6705

Pricing and Availability

2-methyl-8-azabicyclo[3.2.1]octan-3-ol hydrochloride

Catalog No.: AA01BRL9

CAS No.:2060062-12-4 MDL No.: MFCD30535829

MF: C8H16ClNO MW: 177.6717

Pricing and Availability

5-bromo-2,3-dihydrospiro[indene-1,3'-pyrrolidine]-2',5'-dione

Catalog No.: AA01BRL2

CAS No.:956141-85-8 MDL No.: MFCD24149434

MF: C12H10BrNO2 MW: 280.1173

Pricing and Availability

tert-butyl 2,2-dimethyl-4,6-dioxopiperidine-1-carboxylate

Catalog No.: AA01BRLN

CAS No.:1245912-12-2 MDL No.: MFCD30535836

MF: C12H19NO4 MW: 241.2836

Pricing and Availability

2-amino-3-(4-fluorophenyl)-2-methylpropanoic acid hydrochloride

Catalog No.: AA01BRLF

CAS No.:2060042-34-2 MDL No.: MFCD30535833

MF: C10H13ClFNO2 MW: 233.6671

Pricing and Availability

6-amino-3,10-dioxatricyclo[5.2.1.0,1,5]decan-4-one hydrochloride

Catalog No.: AA01BRM3

CAS No.:2059927-75-0 MDL No.: MFCD30535840

MF: C8H12ClNO3 MW: 205.6388

Pricing and Availability

4-Chlorofuro[3,2-c]pyridine-2-carboxylic acid

Catalog No.: AA01BRM9

CAS No.:86518-08-3 MDL No.: MFCD19707602

MF: C8H4ClNO3 MW: 197.5753

Pricing and Availability

methyl 3-methylbutanecarboximidate hydrochloride

Catalog No.: AA01BRMF

CAS No.:580198-47-6 MDL No.: MFCD30535843

MF: C6H14ClNO MW: 151.6345

Pricing and Availability

rac-[(2s,3r)-3-methylpiperidin-2-yl]methanol hydrochloride

Catalog No.: AA01BRMQ

CAS No.:2059913-60-7 MDL No.: MFCD30535851

MF: C7H16ClNO MW: 165.6610

Pricing and Availability

[2-(hydroxymethyl)piperidin-2-yl]methanol

Catalog No.: AA01BRMT

CAS No.:2092329-10-5 MDL No.: MFCD31559119

MF: C7H15NO2 MW: 145.1995

Pricing and Availability

2-chloro-N-(2-chloro-6-methylphenyl)propanamide

Catalog No.: AA01BRN2

CAS No.:572881-05-1 MDL No.: MFCD08844395

MF: C10H11Cl2NO MW: 232.1064

Pricing and Availability

(butan-2-yl)(imino)methyl-lambda6-sulfanone

Catalog No.: AA01BRNO

CAS No.:2059955-23-4 MDL No.: MFCD30502550

MF: C5H13NOS MW: 135.2278

Pricing and Availability

4-chloro-3-methoxy-1,2-thiazole-5-carbaldehyde

Catalog No.: AA01BRNK

CAS No.:2089257-62-3 MDL No.: MFCD30724119

MF: C5H4ClNO2S MW: 177.6088

Pricing and Availability

[2-(2-chloroethoxy)ethyl](methyl)amine hydrochloride

Catalog No.: AA01BRNA

CAS No.:2060037-92-3 MDL No.: MFCD30535860

MF: C5H13Cl2NO MW: 174.0688

Pricing and Availability

[4-(benzyloxy)phenyl]methanamine hydrochloride

Catalog No.: AA01BRN7

CAS No.:133100-92-2 MDL No.: MFCD05669268

MF: C14H16ClNO MW: 249.7359

Pricing and Availability

ethyl(imino)(propan-2-yl)-lambda6-sulfanone

Catalog No.: AA01BRNY

CAS No.:2059949-04-9 MDL No.: MFCD30502560

MF: C5H13NOS MW: 135.2278

Pricing and Availability

cyclobutyl(oxolan-2-yl)methanamine

Catalog No.: AA01BRNG

CAS No.:1600767-39-2 MDL No.: MFCD28646247

MF: C9H17NO MW: 155.2374

Pricing and Availability

imino(methyl)(propan-2-yl)-lambda6-sulfanone

Catalog No.: AA01BROL

CAS No.:1367371-35-4 MDL No.: MFCD30502583

MF: C4H11NOS MW: 121.2012

Pricing and Availability

methyl 3-amino-7-bromo-1-benzothiophene-2-carboxylate

Catalog No.: AA01BRPK

CAS No.:1236150-66-5 MDL No.: MFCD28348425

MF: C10H8BrNO2S MW: 286.1450

Pricing and Availability

2-methoxy-1-(quinolin-5-yl)ethanone

Catalog No.: AA01BRPF

CAS No.:1513089-61-6 MDL No.: MFCD24071059

MF: C12H11NO2 MW: 201.2212

Pricing and Availability

3-amino-7-bromo-1-benzothiophene-2-carboxylic acid

Catalog No.: AA01BRPL

CAS No.:1780193-19-2 MDL No.: MFCD29141008

MF: C9H6BrNO2S MW: 272.1184

Pricing and Availability

5-(propan-2-yl)-3-(trifluoromethyl)-1,2-oxazole-4-carboxylic acid

Catalog No.: AA01BRQ1

CAS No.:1697694-79-3 MDL No.: MFCD29490758

MF: C8H8F3NO3 MW: 223.1492

Pricing and Availability

2-(4-formylbenzenesulfonamido)acetic acid

Catalog No.: AA01BRPZ

CAS No.:1239759-16-0 MDL No.: MFCD16547383

MF: C9H9NO5S MW: 243.2365

Pricing and Availability

4,4,5,5-tetramethyl-1,3-oxazolidin-2-one

Catalog No.: AA01BRQE

CAS No.:52856-03-8 MDL No.: MFCD24551025

MF: C7H13NO2 MW: 143.1836

Pricing and Availability

3,3-difluoro-4-(4-methoxyphenyl)pyrrolidine hydrochloride

Catalog No.: AA01BRQ7

CAS No.:2060037-98-9 MDL No.: MFCD30535874

MF: C11H14ClF2NO MW: 249.6848

Pricing and Availability

2-(5-bromothiophen-2-yl)-2-(methylamino)acetic acid hydrochloride

Catalog No.: AA01BRQR

CAS No.:2059927-68-1 MDL No.: MFCD30535887

MF: C7H9BrClNO2S MW: 286.5739

Pricing and Availability

5-sulfamoylpentane-1-sulfonyl chloride

Catalog No.: AA01BRQF

CAS No.:2059931-63-2 MDL No.: MFCD30535879

MF: C5H12ClNO4S2 MW: 249.7361

Pricing and Availability

3-benzoyl-4-methoxyaniline hydrochloride

Catalog No.: AA01BRQM

CAS No.:2750-22-3 MDL No.: MFCD30535884

MF: C14H14ClNO2 MW: 263.7195

Pricing and Availability

ethyl 4,4-difluoropiperidine-3-carboxylate hydrochloride

Catalog No.: AA01BRQB

CAS No.:1780607-50-2 MDL No.: MFCD30535876

MF: C8H14ClF2NO2 MW: 229.6521

Pricing and Availability

methyl 2-amino-3-(4-chlorophenyl)-2-methylpropanoate hydrochloride

Catalog No.: AA01BRQZ

CAS No.:2060021-52-3 MDL No.: MFCD30535893

MF: C11H15Cl2NO2 MW: 264.1483

Pricing and Availability

methyl 5-(aminomethyl)furan-3-carboxylate hydrochloride

Catalog No.: AA01BRQY

CAS No.:2060042-26-2 MDL No.: MFCD30535892

MF: C7H10ClNO3 MW: 191.6122

Pricing and Availability

1,2-dimethylpyrrolidin-3-one

Catalog No.: AA01BRR7

CAS No.:89531-03-3 MDL No.: MFCD19690613

MF: C6H11NO MW: 113.1576

Pricing and Availability

(2R)-2-methylthiomorpholin-3-one

Catalog No.: AA01BRRB

CAS No.:911306-93-9 MDL No.: MFCD19225990

MF: C5H9NOS MW: 131.1961

Pricing and Availability

1-aminobutane-2,3-diol

Catalog No.: AA01BRRH

CAS No.:1432491-99-0 MDL No.: MFCD22412585

MF: C4H11NO2 MW: 105.1356

Pricing and Availability

4-chlorothieno[3,2-c]pyridine-2-carbaldehyde

Catalog No.: AA01BRRV

CAS No.:1296224-97-9 MDL No.: MFCD12923085

MF: C8H4ClNOS MW: 197.6415

Pricing and Availability

1,2,2-trimethylpyrrolidin-3-one

Catalog No.: AA01BRRR

CAS No.:53874-84-3 MDL No.: MFCD22071428

MF: C7H13NO MW: 127.1842

Pricing and Availability

(4-chloro-2-methoxy-1,3-thiazol-5-yl)methanol

Catalog No.: AA01BRRW

CAS No.:1211507-74-2 MDL No.: MFCD18453281

MF: C5H6ClNO2S MW: 179.6246

Pricing and Availability

1-(quinolin-4-yl)cyclopropane-1-carboxylic acid

Catalog No.: AA01BRS2

CAS No.:869973-48-8 MDL No.: MFCD26673592

MF: C13H11NO2 MW: 213.2319

Pricing and Availability

6-bromo-3,4-dihydro-1H-spiro[naphthalene-2,3'-[1,4]oxazolidine]-5'-one

Catalog No.: AA01BRRY

CAS No.:1489572-93-1 MDL No.: MFCD21266272

MF: C12H12BrNO2 MW: 282.1332

Pricing and Availability

rac-(3R,6R)-6-methylmorpholine-3-carboxylic acid hydrochloride

Catalog No.: AA01BRS9

CAS No.:2059909-93-0 MDL No.: MFCD28954384

MF: C6H12ClNO3 MW: 181.6174

Pricing and Availability

tert-butyl 2-(3-hydroxy-2-oxoazepan-1-yl)acetate

Catalog No.: AA01BRRU

CAS No.:2060042-67-1 MDL No.: MFCD30535902

MF: C12H21NO4 MW: 243.2994

Pricing and Availability

3-((5-chloropyridin-2-yl)oxy)benzoic acid

Catalog No.: AA01BRSH

CAS No.:1050506-11-0 MDL No.: MFCD13480751

MF: C12H8ClNO3 MW: 249.6498

Pricing and Availability

2-(oxan-2-yl)propan-2-amine

Catalog No.: AA01BRSA

CAS No.:1506878-85-8 MDL No.: MFCD30535906

MF: C8H17NO MW: 143.2267

Pricing and Availability

2-[(3-phenoxyphenyl)methyl]pyrrolidine hydrochloride

Catalog No.: AA01BRSL

CAS No.:2060042-73-9 MDL No.: MFCD30535908

MF: C17H20ClNO MW: 289.7998

Pricing and Availability

2,2-dimethyl-2H-chromen-8-amine

Catalog No.: AA01BRST

CAS No.:203195-00-0 MDL No.: MFCD18450812

MF: C11H13NO MW: 175.2270

Pricing and Availability

3-amino-1,1,1-trifluoro-3-methylbutan-2-ol hydrochloride

Catalog No.: AA01BRSU

CAS No.:156990-55-5 MDL No.: MFCD30535912

MF: C5H11ClF3NO MW: 193.5951

Pricing and Availability

1-(hydroxymethyl)cyclopropane-1-sulfonamide

Catalog No.: AA01BRT0

CAS No.:1883810-03-4 MDL No.: MFCD30493852

MF: C4H9NO3S MW: 151.1842

Pricing and Availability

{1,9-dioxaspiro[5.5]undecan-4-yl}methanamine hydrochloride

Catalog No.: AA01BRT7

CAS No.:2060000-35-1 MDL No.: MFCD30535917

MF: C10H20ClNO2 MW: 221.7243

Pricing and Availability

cyclobutyl(oxolan-3-yl)methanamine

Catalog No.: AA01BRTX

CAS No.:1481380-48-6 MDL No.: MFCD21117693

MF: C9H17NO MW: 155.2374

Pricing and Availability

tert-butyl (2S,4R)-2-formyl-4-methoxypyrrolidine-1-carboxylate

Catalog No.: AA01BRTI

CAS No.:185951-21-7 MDL No.: MFCD22573268

MF: C11H19NO4 MW: 229.2729

Pricing and Availability

Rac-[(2r,6r)-6-methylpiperidin-2-yl]methanol

Catalog No.: AA01BRTO

CAS No.:38299-74-0 MDL No.: MFCD26954962

MF: C7H15NO MW: 129.2001

Pricing and Availability

7-chlorothieno[2,3-c]pyridine-2-carboxylic acid

Catalog No.: AA01BRTL

CAS No.:1360902-95-9 MDL No.: MFCD22381593

MF: C8H4ClNO2S MW: 213.6409

Pricing and Availability

2-[6-(methoxycarbonyl)pyridin-3-yl]acetic acid

Catalog No.: AA01BRTM

CAS No.:154586-80-8 MDL No.: MFCD09925142

MF: C9H9NO4 MW: 195.1721

Pricing and Availability

(1R)-1-(piperidin-4-yl)ethan-1-ol hydrochloride

Catalog No.: AA01BRU1

CAS No.:1567666-81-2 MDL No.: MFCD30535928

MF: C7H16ClNO MW: 165.6610

Pricing and Availability