Product Index

2H-1,3-Diazepin-2-one, 1,3-bis[(3-aminophenyl)methyl]hexahydro-5,6-dihydroxy-4,7-bis(phenylmethyl)-, (4R,5S,6S,7R)-

Catalog No.: AA01RZH5

CAS No.:174391-92-5 MDL No.:

MF: C33H36N4O3 MW: 536.6639

Pricing and Availability

MPro N3

Catalog No.: AA01LMGZ

CAS No.:884650-98-0 MDL No.:

MF: C35H48N6O8 MW: 680.7910

Pricing and Availability

3,5-Pyridinedicarboxylic acid, 1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-, cyclopropylmethyl methyl ester

Catalog No.: AA004JFL

CAS No.:86781-07-9 MDL No.:

MF: C20H22N2O6 MW: 386.3985

Pricing and Availability

moxastine

Catalog No.: AA00CJ2V

CAS No.:3572-74-5 MDL No.: MFCD00865703

MF: C18H23NO MW: 269.3813

Pricing and Availability

2-[2-(5-Bromo-2-methoxyphenyl)ethyl]-N-[N'-[(1-ethylpiperidin-4-yl)methyl]carbamimidoyl]-3-fluorobenzamide

Catalog No.: AA0249RI

CAS No.:884538-31-2 MDL No.:

MF: C25H32BrFN4O2 MW: 519.4496

Pricing and Availability

Benzeneacetamide, α-cyclohexyl-N-[3-(hexahydro-1H-azepin-1-yl)propyl]-

Catalog No.: AA001EY7

CAS No.:147614-21-9 MDL No.: MFCD00673879

MF: C23H36N2O MW: 356.5447

Pricing and Availability

[(Z)-2-[2-[(1-oxo-9-octadecenyl)amino]ethoxy]ethyl] hydrogen maleate

Catalog No.: AA00EZYS

CAS No.:56381-65-8 MDL No.:

MF: C26H45NO6 MW: 467.6386

Pricing and Availability

4'-chloro-3,5-dimethoxy-4-(2-morpholinoethoxy)benzophenone hydrochloride

Catalog No.: AA00CRS1

CAS No.:31848-02-9 MDL No.: MFCD00242975

MF: C21H25Cl2NO5 MW: 442.3329

Pricing and Availability

Motrazepam

Catalog No.: AA00BG8O

CAS No.:29442-58-8 MDL No.: MFCD00868008

MF: C17H15N3O4 MW: 325.3187

Pricing and Availability

MR-2096Cl

Catalog No.: AA00F9NG

CAS No.:62509-10-8 MDL No.:

MF: C21H26ClNO5 MW: 407.8878

Pricing and Availability

Propanoic acid, 2-(4-chlorophenoxy)-2-methyl-, compd. with N-(aminoiminomethyl)-4-morpholinecarboximidamide (1:1)

Catalog No.: AA008KNH

CAS No.:79990-42-4 MDL No.:

MF: C16H24ClN5O4 MW: 385.8459

Pricing and Availability

moxaprindine

Catalog No.: AA00DHOV

CAS No.:53076-26-9 MDL No.: MFCD00864738

MF: C23H32N2O MW: 352.5130

Pricing and Availability

(E)-N-(2-(5-Hydroxy-1H-indol-3-yl)ethyl)-3-(4-hydroxy-3-methoxyphenyl)acrylamide

Catalog No.: AA01OPPI

CAS No.:193224-22-5 MDL No.:

MF: C20H20N2O4 MW: 352.3838

Pricing and Availability

Moxipraquine

Catalog No.: AA00C3NW

CAS No.:23790-08-1 MDL No.: MFCD00866602

MF: C24H38N4O2 MW: 414.5841

Pricing and Availability

Mps-BAY 2b

Catalog No.: AA01V23H

CAS No.:1263420-68-3 MDL No.:

MF: C20H23N5O MW: 349.4295

Pricing and Availability

Decanoic acid,hydroperoxy- (9CI)

Catalog No.: AA004U09

CAS No.:86074-10-4 MDL No.:

MF: C10H20O4 MW: 204.2634

Pricing and Availability

Molybdenum sulfide

Catalog No.: AA01QCUM

CAS No.:12612-50-9 MDL No.:

MF: MoS MW: 128.0250

Pricing and Availability

4-[(3s,5r,8r,9s,10s,12r,13s,14s,17r)-3-[(2r,4s,6s)-5-[(2s,4s,5s,6r)-5-[(2s,4s,5s,6r)-4,5-dihydroxy-6-methyl-tetrahydropyran-2-yl]oxy-4-hydroxy-6-methyl-tetrahydropyran-2-yl]oxy-4-hydroxy-6-methyl-tetrahydropyran-2-yl]oxy-12,14-dihydroxy-10,13-dimethyl-1,2

Catalog No.: AA006KOF

CAS No.:66523-11-3 MDL No.:

MF: C60H89N5O18 MW: 1168.3714

Pricing and Availability

Ethanol, 2-amino-, nitrate (1:1)

Catalog No.: AA002J0R

CAS No.:20748-72-5 MDL No.:

MF: C2H8N2O4 MW: 124.0959

Pricing and Availability

Cyclodeca[b]furan-2(3H)-one, 3-ethylidene-5,6,9,10,11,11a-hexahydro-8-methyl-

Catalog No.: AA01Q7IC

CAS No.:88515-59-7 MDL No.:

MF: C15H20O2 MW: 232.3181

Pricing and Availability

tetrafluoromolybdenum

Catalog No.: AA00CC58

CAS No.:23412-45-5 MDL No.:

MF: F4Mo MW: 171.9536

Pricing and Availability

2,6-bis(tert-butyl)-4-(1-methyl-1-phenylethyl)phenol

Catalog No.: AA00CQMI

CAS No.:34624-81-2 MDL No.: MFCD00795961

MF: C23H32O MW: 324.4996

Pricing and Availability

Trichothec-9-ene-3,4,15-triol, 12,13-epoxy-, 4-acetate, (3α,4β)-

Catalog No.: AA01SRLZ

CAS No.:2531-11-5 MDL No.:

MF: C17H24O6 MW: 324.3689

Pricing and Availability

butyl hydrogen tetrabromophthalate

Catalog No.: AA00CSQB

CAS No.:42597-49-9 MDL No.:

MF: C12H10Br4O4 MW: 537.8214

Pricing and Availability

1,2-Cyclohexanedicarboxylic acid, 1-ethyl ester, (1R,2S)-rel-

Catalog No.: AA01SBRK

CAS No.:17488-76-5 MDL No.:

MF: C10H16O4 MW: 200.2316

Pricing and Availability

Molybdenum nickel hydroxide oxide phosphate

Catalog No.: AA00FZF2

CAS No.:68130-36-9 MDL No.:

MF: HMoNiO6P---- MW: 282.6315

Pricing and Availability

Phosphonic acid,ammonium salt (1:1)

Catalog No.: AA007M3I

CAS No.:13446-12-3 MDL No.:

MF: H6NO3P MW: 99.0263

Pricing and Availability

BORIC ACID COMPD. WITH 2-AMINOETHANOL

Catalog No.: AA002RDP

CAS No.:26038-87-9 MDL No.:

MF: C2H10BNO4 MW: 122.9161

Pricing and Availability

4-Acetyl-8-methyl-7-(3-methyl-2-oxopentyl)-1H-2-benzopyran-1,6(8aH)-dione

Catalog No.: AA00BK8M

CAS No.:31020-94-7 MDL No.:

MF: C18H20O5 MW: 316.3484

Pricing and Availability

monoferric phytate

Catalog No.: AA00CCAJ

CAS No.:23567-85-3 MDL No.:

MF: C6H18FeO24P6+++ MW: 715.8803

Pricing and Availability

trifluoromolybdenum

Catalog No.: AA00BVU1

CAS No.:20193-58-2 MDL No.:

MF: F3Mo MW: 152.9552

Pricing and Availability

(-)-D-Glycerol 1-butyrate

Catalog No.: AA00DSHG

CAS No.:5309-42-2 MDL No.: MFCD30571853

MF: C7H14O4 MW: 162.1837

Pricing and Availability

Octadecanoic acid, compd. with 2-aminoethanol (1:1)

Catalog No.: AA0072WJ

CAS No.:2129-99-9 MDL No.:

MF: C20H43NO3 MW: 345.5603

Pricing and Availability

2-Butenedioic acid(2Z)-, monoisooctyl ester

Catalog No.: AA007JEN

CAS No.:30137-97-4 MDL No.:

MF: C12H20O4 MW: 228.2848

Pricing and Availability

Molybdoenzymemolybdenum cofactor

Catalog No.: AA005YWF

CAS No.:73508-07-3 MDL No.:

MF: C10H14N5O6PS2 MW: 395.3518

Pricing and Availability

2H,11H-[1,4]Benzodioxepino[2,3-g]-1-benzopyran-7-carboxaldehyde, 3,4-dihydro-8-hydroxy-2,2,5,10-tetramethyl-4,11-dioxo-

Catalog No.: AA01SWER

CAS No.:68455-06-1 MDL No.:

MF: C21H18O7 MW: 382.3634

Pricing and Availability

Molybdenum trifluoride oxide

Catalog No.: AA00CBXE

CAS No.:22529-29-9 MDL No.:

MF: F3H3MoO MW: 171.9784

Pricing and Availability

(2-hydroxyethyl)ammonium palmitate

Catalog No.: AA00BU49

CAS No.:2210-62-0 MDL No.:

MF: C18H39NO3 MW: 317.5072

Pricing and Availability

Mollugogenol A

Catalog No.: AA00CBUQ

CAS No.:22550-76-1 MDL No.:

MF: C30H52O4 MW: 476.7315

Pricing and Availability

2H,7H-1-Benzopyrano[7,6-b][1,4]benzodioxepin-11-carboxaldehyde, 9-chloro-3,4-dihydro-10-hydroxy-2,2,5,8-tetramethyl-4,7-dioxo-

Catalog No.: AA01R0Q6

CAS No.:1179374-66-3 MDL No.:

MF: C21H17ClO7 MW: 416.8085

Pricing and Availability

citric acid, monoester with glycerol

Catalog No.: AA00CRV5

CAS No.:36291-32-4 MDL No.: MFCD16621280

MF: C9H14O9 MW: 266.2021

Pricing and Availability

(E)-3-(5-Methoxy-2-methyl-1H-indol-3-yl)-1-(pyridin-4-yl)prop-2-en-1-one

Catalog No.: AA0249SC

CAS No.:1363421-46-8 MDL No.: MFCD34476008

MF: C18H16N2O2 MW: 292.3318

Pricing and Availability

MONOCHLORODIBENZOFURAN

Catalog No.: AA00D7AJ

CAS No.:42934-53-2 MDL No.:

MF: C12H7ClO MW: 202.6364

Pricing and Availability

DECANOIC ACID COMPOUND WITH 2-AMINOETHANOL (1:1)

Catalog No.: AA01HM39

CAS No.:25859-29-4 MDL No.:

MF: C12H27NO3 MW: 233.3477

Pricing and Availability

monofluoroacetylglycine

Catalog No.: AA00F3K3

CAS No.:6320-19-0 MDL No.:

MF: C4H6FNO3 MW: 135.0937

Pricing and Availability

molephantinin

Catalog No.: AA00E6XU

CAS No.:56221-98-8 MDL No.: MFCD01656438

MF: C20H24O6 MW: 360.4010

Pricing and Availability

Moctamide

Catalog No.: AA00C3PG

CAS No.:29619-86-1 MDL No.: MFCD00865759

MF: C33H47NO MW: 473.7324

Pricing and Availability

10(9H)-Acridinecarbothioic acid, 9,9-dimethyl-, S-(2-(1-piperidinyl)et hyl) ester

Catalog No.: AA00CWDA

CAS No.:38025-48-8 MDL No.: MFCD01754418

MF: C23H28N2OS MW: 380.5462

Pricing and Availability

Urea, chloro-

Catalog No.: AA01HF72

CAS No.:3135-74-8 MDL No.:

MF: CH3ClN2O MW: 94.5003

Pricing and Availability

2H,11H-1-Benzopyrano[6,7-b][1,4]benzodioxepin-7-carboxaldehyde, 3,4-dihydro-8,13-dihydroxy-2,2,5,10-tetramethyl-4,11-dioxo-

Catalog No.: AA01Q3JE

CAS No.:1179374-69-6 MDL No.:

MF: C21H18O8 MW: 398.3628

Pricing and Availability

mono-4-coumarylputrescine

Catalog No.: AA00GJ4K

CAS No.:80244-08-2 MDL No.:

MF: C13H19ClN2O2 MW: 270.7552

Pricing and Availability

1-Bromo-2-phenoxy-benzene

Catalog No.: AA00C82G

CAS No.:36563-47-0 MDL No.: MFCD00626462

MF: C12H9BrO MW: 249.1033

Pricing and Availability

Myristic acid, compound with 2-aminoethanol (1:1)

Catalog No.: AA01G8TF

CAS No.:31756-97-5 MDL No.:

MF: C16H35NO3 MW: 289.4540

Pricing and Availability

11H-Dibenzo[b,e][1,4]dioxepin-4-carboxaldehyde, 2-chloro-3,7-dihydroxy-1,9-dimethyl-8-(3-methyl-2-buten-1-yl)-11-oxo-

Catalog No.: AA01OUTS

CAS No.:1016605-31-4 MDL No.:

MF: C21H19ClO6 MW: 402.8250

Pricing and Availability

mollicellin G

Catalog No.: AA00G05V

CAS No.:68455-08-3 MDL No.:

MF: C21H20O6 MW: 368.3799

Pricing and Availability

Phosphorofluoridic acid, monoammonium salt (8CI,9CI)

Catalog No.: AA002JPP

CAS No.:20859-38-5 MDL No.:

MF: FH5NO3P MW: 117.0168

Pricing and Availability

Molybdate (MoO42-), dipotassium, pentahydrate, (T-4)-

Catalog No.: AA01P6LS

CAS No.:7790-55-8 MDL No.:

MF: H2KMoO5- MW: 217.0712

Pricing and Availability

Benzoic acid, 4-[(chloroamino)sulfonyl]-

Catalog No.: AA01OSD5

CAS No.:106145-03-3 MDL No.:

MF: C7H6ClNO4S MW: 235.6448

Pricing and Availability

3-Pyridinesulfonamide, 5-[8-(1H-pyrazol-4-yl)-1,5-naphthyridin-2-yl]-

Catalog No.: AA01QPL8

CAS No.:1092565-44-0 MDL No.:

MF: C16H12N6O2S MW: 352.3705

Pricing and Availability

ML 400

Catalog No.: AA0249SV

CAS No.:1908414-42-5 MDL No.:

MF: C24H29N3O MW: 375.5066

Pricing and Availability

MK-6884

Catalog No.: AA0249SY

CAS No.:2102194-04-5 MDL No.:

MF: C25H25N5O MW: 411.4989

Pricing and Availability

10(9H)-Acridinecarbothioic acid, 9,9-dimethyl-, S-(2-(4-methoxy-1-pipe ridinyl)ethyl) ester

Catalog No.: AA00CWDB

CAS No.:38025-49-9 MDL No.: MFCD01754414

MF: C24H30N2O2S MW: 410.5722

Pricing and Availability

Modoflaner

Catalog No.: AA0249T1

CAS No.:1331922-53-2 MDL No.: MFCD34567693

MF: C23H10F12IN3O2 MW: 715.2297

Pricing and Availability

3-(1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7h-purin-7-yl)-2-hydroxypropyl(4-chlorophenoxy)acetate

Catalog No.: AA01HD0Q

CAS No.:54504-71-1 MDL No.:

MF: C18H18ClN4O6- MW: 421.8117

Pricing and Availability

MLS1082

Catalog No.: AA0249T3

CAS No.:883958-36-9 MDL No.:

MF: C24H23N3O2 MW: 385.4583

Pricing and Availability

10(9H)-Acridinecarbothioic acid, 9,9-dimethyl-, S-(2-(4-methyl-1-piper azinyl)ethyl) ester

Catalog No.: AA00CWDD

CAS No.:38044-66-5 MDL No.: MFCD01754416

MF: C23H29N3OS MW: 395.5609

Pricing and Availability

4,8-diamino-1,5-dihydroxy-2-(4-methoxyphenyl)anthraquinone

Catalog No.: AA00DSJM

CAS No.:4702-64-1 MDL No.:

MF: C21H16N2O5 MW: 376.3621

Pricing and Availability

10(9H)-Acridinecarbothioic acid, 9,9-dimethyl-, S-[2-[ethyl(phenylmethyl)amino]ethyl] ester, hydrochloride (1:1)

Catalog No.: AA01RKAY

CAS No.:38044-62-1 MDL No.:

MF: C27H31ClN2OS MW: 467.0658

Pricing and Availability

1-(4-Fluorophenyl)-4-(4-(2-((4-methoxyphenyl)(phenyl)methoxy)ethyl)piperazin-1-yl)butan-1-one

Catalog No.: AA00EIOB

CAS No.:65329-79-5 MDL No.: MFCD00865216

MF: C30H35FN2O3 MW: 490.6089

Pricing and Availability

10(9H)-Acridinecarbothioic acid, 9,9-dimethyl-, S-(2-(dimethylamino)et hyl) ester, butanedioate (1

Catalog No.: AA00CWDC

CAS No.:38044-64-3 MDL No.: MFCD01754410

MF: C24H30N2O5S MW: 458.5704

Pricing and Availability

Mofloverine

Catalog No.: AA00DI9C

CAS No.:54063-50-2 MDL No.: MFCD00868659

MF: C16H23NO6 MW: 325.3569

Pricing and Availability

Oxetane, 3,3'-[sulfinylbis(methylene)]bis[3-methyl-

Catalog No.: AA001HZB

CAS No.:1422514-36-0 MDL No.:

MF: C10H18O3S MW: 218.3131

Pricing and Availability

Mofoxime

Catalog No.: AA00CFEA

CAS No.:29936-79-6 MDL No.: MFCD00868622

MF: C14H18N2O4 MW: 278.3037

Pricing and Availability

(9,9-dimethylacridin-10-yl)-(2-dimethylaminoethylsulfanyl)methanone, e thanesulfonic acid

Catalog No.: AA00CVBQ

CAS No.:38044-68-7 MDL No.: MFCD01754411

MF: C22H30N2O4S2 MW: 450.6146

Pricing and Availability

MO-I-500 (FTO-IN-7d)

Catalog No.: AA023YQ7

CAS No.:1585219-04-0 MDL No.:

MF: C12H12ClNO5S MW: 317.7454

Pricing and Availability

Minaxolone

Catalog No.: AA00EINP

CAS No.:62571-87-3 MDL No.: MFCD00864453

MF: C25H43NO3 MW: 405.6138

Pricing and Availability

Prost-13-en-1-oic acid, 11,16-dihydroxy-16-methyl-9-oxo-, (11alpha,13E )-(+-)-

Catalog No.: AA00FY1P

CAS No.:66792-31-2 MDL No.:

MF: C21H36O5 MW: 368.5075

Pricing and Availability

miconidin

Catalog No.: AA00D1GI

CAS No.:34272-58-7 MDL No.: MFCD24717254

MF: C12H18O3 MW: 210.2695

Pricing and Availability

Minoxidil Sulfate

Catalog No.: AA01AL8V

CAS No.:210357-39-4 MDL No.: MFCD00211111

MF: C9H17N5O5S MW: 307.3268

Pricing and Availability

Milveterol

Catalog No.: AA00EKFX

CAS No.:652990-07-3 MDL No.: MFCD18633305

MF: C25H29N3O4 MW: 435.5155

Pricing and Availability

Minocycline hydrochloride dihydrate

Catalog No.: AA01DOS9

CAS No.:128420-71-3 MDL No.: MFCD13562735

MF: C23H32ClN3O9 MW: 529.9679

Pricing and Availability

5-hydroxy-2,7-dimethoxy-6-methyl-1,4-naphthoquinone

Catalog No.: AA01J2KP

CAS No.:91776-49-7 MDL No.:

MF: C13H12O5 MW: 248.2314

Pricing and Availability

4(1H)-Pyridinone, 1-(2-aminoethyl)-3-hydroxy-, hydrochloride (1:2)

Catalog No.: AA01PIRL

CAS No.:36507-54-7 MDL No.:

MF: C7H11ClN2O2 MW: 190.6274

Pricing and Availability

1-Piperazineacetamide,3-(aminocarbonyl)-4-[4,4-bis(4-fluorophenyl)butyl]-N-(2,6-dichlorophenyl)-,hydrochloride, hydrate (1:2:1)

Catalog No.: AA00GHCG

CAS No.:79467-24-6 MDL No.:

MF: C29H34Cl4F2N4O3 MW: 666.4141

Pricing and Availability

5,14-dihydrobenz(5,6)isoindolo(2,1-b)isoquinoline-8,13-dione

Catalog No.: AA01J19P

CAS No.:91753-07-0 MDL No.:

MF: C20H13NO2 MW: 299.3227

Pricing and Availability

Midazogrel

Catalog No.: AA00G75M

CAS No.:80614-27-3 MDL No.: MFCD00865277

MF: C18H24N2O MW: 284.3960

Pricing and Availability

N-[(7-methoxy-6-methyl-5,8-dioxo-isoquinolin-1-yl)methyl]-2-oxo-propan amide

Catalog No.: AA00GGC3

CAS No.:76177-28-1 MDL No.:

MF: C15H14N2O5 MW: 302.2821

Pricing and Availability

4-[4,4-bis(4-fluorophenyl)butyl]-3-carbamoyl-N-(2,6-dichlorophenyl)piperazine-1-acetamide dihydrochloride

Catalog No.: AA00GMGV

CAS No.:83898-67-3 MDL No.:

MF: C29H32Cl4F2N4O2 MW: 648.3988

Pricing and Availability

Mirincamycin

Catalog No.: AA00BG9U

CAS No.:31101-25-4 MDL No.: MFCD00864962

MF: C19H35ClN2O5S MW: 439.0096

Pricing and Availability

Mirincamycin hydrochloride

Catalog No.: AA00GJ21

CAS No.:8063-91-0 MDL No.:

MF: C19H36Cl2N2O5S MW: 475.4705

Pricing and Availability

Methylcarbamic acid [3-[1-(dimethylamino)ethyl]phenyl] ester

Catalog No.: AA00DZP9

CAS No.:4464-16-8 MDL No.: MFCD22123903

MF: C12H18N2O2 MW: 222.2835

Pricing and Availability

Mito-TRFS

Catalog No.: AA0249U9

CAS No.:1859102-62-7 MDL No.:

MF: C38H34IN2O5PS2 MW: 820.6952

Pricing and Availability

MI-389

Catalog No.: AA0249UA

CAS No.:2222635-92-7 MDL No.:

MF: C35H35FN6O6 MW: 654.6874

Pricing and Availability

1(4H)-Pyridinepropanoicacid, a-amino-3-hydroxy-4-oxo-, methylester, (S)- (9CI)

Catalog No.: AA01IS1T

CAS No.:60343-53-5 MDL No.:

MF: C9H12N2O4 MW: 212.2026

Pricing and Availability

9H-Purine-9-acetaldehyde,a-(1-formyl-2-hydroxyethoxy)-6-(methylthio)-,[R-(R*,R*)]- (9CI)

Catalog No.: AA01G8RR

CAS No.:31654-43-0 MDL No.:

MF: C13H14N4O6S MW: 354.3385

Pricing and Availability

Metynodiol

Catalog No.: AA00CC3W

CAS No.:23163-42-0 MDL No.: MFCD09837850

MF: C21H30O2 MW: 314.4617

Pricing and Availability

10-[3-(dimethylammonio)propyl]-2-methoxy-10H-phenothiazinium maleate

Catalog No.: AA00CVCH

CAS No.:3403-42-7 MDL No.: MFCD01706905

MF: C22H26N2O5S MW: 430.5172

Pricing and Availability

(3aR)-3aα,4,4aα,5,6,8,9,9a,10,10aα-Decahydro-9aβ-acetoxymethyl-8β-hydroxy-3,5-bis(methylene)-6β,9β-epoxyfuro[2,3-h][3]benzoxepin-2(3H)-one

Catalog No.: AA00EOWI

CAS No.:61701-92-6 MDL No.:

MF: C17H20O7 MW: 336.3365

Pricing and Availability

L-Methioninamide, L-tyrosyl-D-alanylglycyl-L-phenylalanyl-N2-methyl-

Catalog No.: AA005RWY

CAS No.:66960-34-7 MDL No.: MFCD00864308

MF: C29H40N6O6S MW: 600.7295

Pricing and Availability

Metoquizine

Catalog No.: AA00FF6R

CAS No.:7125-67-9 MDL No.: MFCD00865185

MF: C22H27N5O MW: 377.4827

Pricing and Availability