CAS number index

CAS numbers starting with 21, page 57

8,045 chemicals have a CAS number that starts with 21. They are listed in CAS order.

Showing 5,601 to 5,700 of 8,045 chemicals

CAS numberChemical nameFormulaMol. weight

2168499-15-67-Bromo-2,4-dichloro-8-fluoroquinazolineC₈H₂BrCl₂FN₂295.93
21685-04-11-Allyl-2,3,4,5,6-pentachlorobenzeneC₉H₅Cl₅290.40
21685-51-8(R)-Methyl 2-amino-3-phenylpropanoateC₁₀H₁₃NO₂179.22
2168501-64-0tert-Butyl 6-(aminomethyl)-5-azaspiro(3.4)octane-5-carboxylateC₁₃H₂₄N₂O₂240.35
2168517-64-21-(4,5-Difluoro-2-nitrophenyl)propan-1-oneC₉H₇F₂NO₃215.16
2168520-78-1(Spiro(2.3)hexan-5-yl)methanesulfonyl chlorideC₇H₁₁ClO₂S194.68
2168525-36-62-Oxabicyclo(2.2.1)heptane-3-carboxylic acidC₇H₁₀O₃142.15
2168527-74-82-[(2-Isothiocyanatoethyl)sulfanyl]acetic acidC₅H₇NO₂S₂177.25
216854-23-8tert-Butyl N-[(3S)-piperidin-3-yl]carbamateC₁₀H₂₀N₂O₂200.28
216854-38-51-Methyl-3-phenyl-1H-pyrazol-4-amineC₁₀H₁₁N₃173.22
2168559-42-82-(Tributylstannyl)-4-(trifluoromethyl)-1,3-thiazoleC₁₆H₂₈F₃NSSn442.18
21686-05-51-(1,5-Dimethyl-1H-pyrazol-4-yl)ethanoneC₇H₁₀N₂O138.17
21686-17-9(4-Fluoro-3-methylphenyl)hydrazine hydrochlorideC₇H₁₀ClFN₂176.62
2168618-83-36-((tert-Butoxy)carbonyl)-2-oxa-6-azaspiro(3.3)heptane-5-carboxylic acidC₁₁H₁₇NO₅243.26
2168633-93-82-Bromo-1-chloro-3-ethynylbenzeneC₈H₄BrCl215.48
2168636-76-61-((tert-Butoxy)carbonyl)-1,2,5,6-tetrahydropyridine-2-carboxylic acidC₁₁H₁₇NO₄227.26
2168637-32-75-Bromopyrido[2,3-d]pyrimidin-4-olC₇H₄BrN₃O226.03
2168640-02-42-Bromo-1,3-bis(difluoromethoxy)-5-methylbenzeneC₉H₇BrF₄O₂303.05
216865-38-21-(2-Iodophenyl)-1H-pyrrole-2,5-dioneC₁₀H₆INO₂299.07
2168656-67-33-Ethynyl-3-fluorocyclobutane-1-carboxylic acidC₇H₇FO₂142.13
216867-32-25-(Pyridin-4-yl)thiophene-2-carboxylic acidC₁₀H₇NO₂S205.24
216867-46-82-(Pyridin-4-yl)-1,3-thiazole-5-carboxylic acidC₉H₆N₂O₂S206.23
216867-60-6[2,4'-Bipyridine]-5-carboxylic acidC₁₁H₈N₂O₂200.20
2168675-18-98-(3-Ethyl-1,2,4-oxadiazol-5-yl)-2-oxa-6-azaspiro(3.4)octaneC₁₀H₁₅N₃O₂209.25
2168679-42-11-[5-(Aminomethyl)-4-methyl-1,3-thiazol-2-yl]ethan-1-olC₇H₁₂N₂OS172.25
2168686-62-0tert-Butyl 3-acetyl-3-hydroxyazetidine-1-carboxylateC₁₀H₁₇NO₄215.25
2168687-61-23-Formyl-4-(trifluoromethoxy)benzoic acidC₉H₅F₃O₄234.13
216870-24-54-(Diethoxyphosphoryl)-piperidine-1-carboxylic acid ethyl esterC₁₂H₂₄NO₅P293.30
2168703-19-12-(Iodomethyl)-octahydropyrano[3,2-c]pyran, mixture of diastereomersC₉H₁₅IO₂282.12
2168704-78-5tert-Butyl 4-bromo-2,6-dichlorobenzoateC₁₁H₁₁BrCl₂O₂326.02
2168708-69-64-Amino-1-imino-1-thiomorpholin-1-oneC₄H₁₁N₃OS149.22
2168709-72-4tert-Butyl 5-[(methylamino)methyl]-1,2,3,4-tetrahydropyridine-1-carboxylateC₁₂H₂₂N₂O₂226.32
2168714-58-53,3-Dimethyloxolane-2-carboxylic acidC₇H₁₂O₃144.17
2168724-86-33-[(tert-Butyldimethylsilyl)oxy]oxolane-3-carbaldehydeC₁₁H₂₂O₃Si230.38
2168729-31-3tert-Butyl 5-formyl-7-azaspiro[3.5]nonane-7-carboxylateC₁₄H₂₃NO₃253.34
2168729-64-23-Ethynyl-3-methoxyoxolaneC₇H₁₀O₂126.16
2168730-48-92-[(tert-Butoxy)carbonyl]-2-azabicyclo[2.2.1]hept-5-ene-3-carboxylic acidC₁₂H₁₇NO₄239.27
2168736-71-6tert-Butyl 3-ethynyl-3-methylpyrrolidine-1-carboxylateC₁₂H₁₉NO₂209.29
2168738-37-03-Bromo-2-fluoro-6-(trifluoromethoxy)benzaldehydeC₈H₃BrF₄O₂287.01
2168747-06-43-(4,4-Difluorocyclohexyl)-2-fluoropropanoic acidC₉H₁₃F₃O₂210.19
2168759-44-02-(Oxan-4-yl)piperidin-4-amineC₁₀H₂₀N₂O184.28
2168765-04-43-Bromo-4-cyclopropyl-4H-1,2,4-triazoleC₅H₆BrN₃188.03
2168773-83-7tert-Butyl 4-amino-2-oxa-8-azaspiro[4.5]decane-8-carboxylateC₁₃H₂₄N₂O₃256.35
2168775-14-0Methyl 6-sulfamoylhexanoateC₇H₁₅NO₄S209.27
2168775-82-2Methyl 2-(3-(chlorosulfonyl)cyclopentyl)acetateC₈H₁₃ClO₄S240.71
2168784-50-54-(Bromomethyl)-4-((oxiran-2-yl)methyl)oxaneC₉H₁₅BrO₂235.12
2168788-43-8tert-Butyl 6-(iodomethyl)-5-oxa-8-azaspiro[3.5]nonane-8-carboxylateC₁₃H₂₂INO₃367.23
2168793-78-81-Fluorospiro[2.5]octane-1-carboxylic acidC₉H₁₃FO₂172.20
2168794-27-0tert-Butyl 4-(aminomethyl)-2-azabicyclo[2.2.2]octane-2-carboxylateC₁₃H₂₄N₂O₂240.35
2168799-10-66-Cyclopropyl-4-methylpyridine-3-carboxylic acidC₁₀H₁₁NO₂177.20
2168799-15-13-Amino-2-chloro-5-methylbenzene-1-sulfonyl fluorideC₇H₇ClFNO₂S223.66
21688-61-9KulinoneC₃₀H₄₈O₂440.71
216880-46-51-(3-Methoxypropyl)-3-(2-methylphenyl)thioureaC₁₂H₁₈N₂OS238.36
216880-47-62-Mercapto-3-(3-methoxypropyl)quinazolin-4(3H)-oneC₁₂H₁₄N₂O₂S250.32
2168802-90-02-[5-Bromo-2-oxo-3-(trifluoromethyl)pyridin-1-yl]acetic acidC₈H₅BrF₃NO₃300.03
2168803-88-9tert-Butyl 2-(2-aminoethyl)-6-methylmorpholine-4-carboxylateC₁₂H₂₄N₂O₃244.34
2168812-38-02-Bromo-6-(trifluoromethoxy)benzene-1-sulfonyl chlorideC₇H₃BrClF₃O₃S339.52
2168813-13-44-Formyl-3-(trifluoromethoxy)benzoic acidC₉H₅F₃O₄234.13
2168813-19-02-(Bromomethyl)-octahydrocyclopenta[b]pyranC₉H₁₅BrO219.12
2168840-31-94-Methyl-3,4-dihydro-2H-pyran-4-carbonitrileC₇H₉NO123.16
2168846-11-31-(4-Ethylphenyl)-2,2-difluorocyclopropane-1-carboxylic acidC₁₂H₁₂F₂O₂226.22
2168854-94-04-Bromo-1,1,1-trifluoro-2,2-dimethylbutaneC₆H₁₀BrF₃219.04
2168866-64-4tert-Butyl 3-bromo-2,6-dimethylbenzoateC₁₃H₁₇BrO₂285.18
2168870-40-2tert-Butyl N-{7-oxospiro[3.5]nonan-2-yl}carbamateC₁₄H₂₃NO₃253.34
2168875-37-29,9-Dimethyl-6,7,8,9-tetrahydro-5H-benzo[7]annulen-6-oneC₁₃H₁₆O188.27
2168882-32-26,6-Dimethyl-1,4-dioxane-2-carboxylic acidC₇H₁₂O₄160.17
2168882-38-82-(3-Bromo-2-fluorophenoxy)acetic acidC₈H₆BrFO₃249.03
21689-84-9CyanatrynC₁₀H₁₆N₆S252.35
2168903-09-95-Ethynyl-1-(trifluoromethyl)-1H-pyrazoleC₆H₃F₃N₂160.10
2168906-49-62-Oxabicyclo(2.2.2)octane-4-carboxylic acidC₈H₁₂O₃156.18
2168912-12-57-Bromo-2,2-difluorocycloheptan-1-oneC₇H₉BrF₂O227.05
2168919-10-4(6-Oxaspiro(3.5)nonan-7-yl)methanolC₉H₁₆O₂156.22
2168924-85-2tert-Butyl N-(5-hydroxyspiro(2.3)hexan-1-yl)carbamateC₁₁H₁₉NO₃213.28
2168945-54-6tert-Butyl 7-bromo-1H,2H,3H-pyrido(2,3-b)(1,4)oxazine-1-carboxylateC₁₂H₁₅BrN₂O₃315.17
2168956-09-83-(4,4-Difluorocyclohexyl)-2-methylpropanoic acidC₁₀H₁₆F₂O₂206.23
2168959-86-02-{Spiro[3.3]heptan-2-yl}acetic acidC₉H₁₄O₂154.21
2168970-66-74-Amino-5-methylthiophene-2-sulfonyl fluorideC₅H₆FNO₂S₂195.24
2168970-99-61-({[(tert-Butoxy)carbonyl]amino}methyl)-2-oxabicyclo[2.1.1]hexane-4-carboxylic acidC₁₂H₁₉NO₅257.29
2168976-91-6tert-Butyl 2-(aminomethyl)-5,5-dimethylmorpholine-4-carboxylateC₁₂H₂₄N₂O₃244.34
2168983-35-31,3,3-Trifluorocyclobutane-1-carboxylic acidC₅H₅F₃O₂154.09
2168983-47-72-(3-Methoxycyclobutyl)ethan-1-olC₇H₁₄O₂130.19
2168986-18-1tert-Butyl N-[4-(chlorosulfonyl)-2-methylbutan-2-yl]carbamateC₁₀H₂₀ClNO₄S285.79
2168995-00-23-(Oxolan-3-yl)cyclobutan-1-oneC₈H₁₂O₂140.18
2168997-29-11-Bromo-2,5-dichloro-4-(difluoromethoxy)benzeneC₇H₃BrCl₂F₂O291.91
2168998-45-4tert-Butyl N-[2-(fluorosulfonyl)ethyl]-N-methylcarbamateC₈H₁₆FNO₄S241.28
2168999-71-95-Methyl-1H-imidazole-4-sulfonamideC₄H₇N₃O₂S161.19
2169-23-5Methyl 3-(benzyloxy)-2-hydroxybenzoateC₁₅H₁₄O₄258.27
2169-25-7Methyl 3-hydroxy-2-methoxybenzoateC₉H₁₀O₄182.18
2169-44-0N-MethyllaurotetanineC₂₀H₂₃NO₄341.41
2169-64-4AzaribineC₁₄H₁₇N₃O₉371.30
2169-67-7BromodifluoroacetamideC₂H₂BrF₂NO173.94
2169-69-9alpha-Cyanocinnamic acid ethyl esterC₁₂H₁₁NO₂201.22
2169-75-7Deptropine citrateC₂₉H₃₅NO₈525.60
2169-87-12,3-Naphthalenedicarboxylic acidC₁₂H₈O₄216.19
2169-98-4VeratraldoximeC₉H₁₁NO₃181.19
2169-99-5o-Vanillin oximeC₈H₉NO₃167.16
21690-26-66-Bromo-2,2-dimethylcyclohexan-1-oneC₈H₁₃BrO205.09
21690-43-73-Cyclohexene-1-carbonitrile, 4-(4-methyl-3-penten-1-yl)-C₁₃H₁₉N189.30
21690-83-5N-(tert-Butyl)-N'-(2-furylmethyl)thioureaC₁₀H₁₆N₂OS212.32
2169004-88-85-Azaspiro(3.5)nonan-6-oneC₈H₁₃NO139.20

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