CAS number index

CAS numbers starting with 21, page 52

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

Showing 5,101 to 5,200 of 8,045 chemicals

CAS numberChemical nameFormulaMol. weight

2165-04-02-Methyl-6-phenylpyridazin-3(2H)-oneC₁₁H₁₀N₂O186.21
2165-06-23-Chloro-6-(4-methylphenyl)pyridazineC₁₁H₉ClN₂204.66
2165-19-7GuanoxanC₁₀H₁₃N₃O₂207.23
2165-21-11H-Tetrazole-1,5-diamineCH₄N₆100.08
2165-35-72-(2,3-Dihydro-1,4-benzodioxin-2-yl)ethan-1-amine hydrochlorideC₁₀H₁₄ClNO₂215.68
216501-60-9(3-Chloro-1-benzothiophen-2-yl)-(6-methoxy-3,4-dihydro-2H-quinolin-1-yl)methanoneC₁₉H₁₆ClNO₂S357.86
216501-66-53-(2,6-Dichlorophenyl)-5-methylisoxazol-4-yl 1,2,3,4-tetrahydroquinolyl ketoneC₂₀H₁₆Cl₂N₂O₂387.27
216502-06-62-Amino-N-(4-fluorophenyl)benzamideC₁₃H₁₁FN₂O230.24
216502-22-63-(4-Fluorophenyl)-2,6-dimethyl-4(3H)-quinazolinoneC₁₆H₁₃FN₂O268.29
216502-35-14,6-Dimethoxy-N-[3-(trifluoromethyl)phenyl]-1,3,5-triazin-2-amineC₁₂H₁₁F₃N₄O₂300.24
216502-42-0N-(2,4-Dimethylphenyl)-1,3-benzothiazol-2-amineC₁₅H₁₄N₂S254.36
216502-43-1N-(3-Methoxyphenyl)-2-benzothiazolamineC₁₄H₁₂N₂OS256.33
216502-94-2Benzyl 3-(chlorocarbonyl)tetrahydro-1(2H)-pyridinecarboxylateC₁₄H₁₆ClNO₃281.74
216504-75-54-[3-(4-Fluorophenyl)-1H-pyrazol-4-yl]pyridineC₁₄H₁₀FN₃239.25
216505-89-41-(5-(4-Chlorophenyl)-4-(4-pyridinyl)-1H-pyrazol-3-yl)-4-methylpiperazineC₁₉H₂₀ClN₅353.86
21651-04-72,2-Dimethyl-3-((4-methylbenzenesulfonyl)oxy)propan-1-olC₁₂H₁₈O₄S258.34
21651-12-7Penta-2,4-dienoic acidC₅H₆O₂98.10
21651-19-4TIN OXIDE (SnO)OSn134.71
21651-53-64abeta,7alpha,7abeta-NepetalactoneC₁₀H₁₄O₂166.22
21651-62-7Nepetalactone cis-trans-formC₁₀H₁₄O₂166.22
21651-83-2rac-(1R,2R)-2-(Methylamino)cyclohexan-1-olC₇H₁₅NO129.20
2165137-21-12-Bromo-6-(difluoromethoxy)benzoic acidC₈H₅BrF₂O₃267.02
21652-27-7Oleyl hydroxyethyl imidazolineC₂₂H₄₂N₂O350.59
21652-58-41H,1H,2H-Perfluoro-1-deceneC₁₀H₃F₁₇446.10
21653-20-3(1S,3S,4R,5R)-4-Methyl-1-(1-methylethyl)bicyclo(3.1.0)hexan-3-olC₁₀H₁₈O154.25
21653-96-3Bromebric acid, (Z)-C₁₁H₉BrO₄285.09
21653-97-4(2S)-2-AminopropanalC₃H₇NO73.09
21653-98-5Butanoic acid, 3-amino-4-oxo-, (3S)-C₄H₇NO₃117.10
21653-99-6LysinylC₆H₁₄N₂O130.19
2165320-62-51-Phenyl-2-[2-(trifluoromethyl)phenoxy]ethan-1-amine hydrochlorideC₁₅H₁₅ClF₃NO317.74
2165322-94-9USP25/28 inhibitor AZ1C₁₇H₁₆BrF₄NO₂422.22
2165325-42-63,4-Dimethoxy-N-[2-(1,2,4-triazol-1-yl)-5-(trifluoromethoxy)phenyl]benzamideC₁₈H₁₅F₃N₄O₄408.34
2165340-32-74-(7-Methoxyquinolin-4-yl)-2-methylphenolC₁₇H₁₅NO₂265.31
2165356-07-87-Amino-3-(methoxymethyl)-3-cephem-4-carboxylic acidC₉H₁₂N₂O₄S244.27
2165391-70-6rac-tert-Butyl (1R,5S,6R)-6-hydroxy-3-azabicyclo(3.1.0)hexane-3-carboxylateC₁₀H₁₇NO₃199.25
2165402-01-5tert-Butyl N-((2S)-3-cyano-2-hydroxypropyl)carbamateC₉H₁₆N₂O₃200.24
2165408-95-5rac-(1R,4S,5S)-2-[(tert-Butoxy)carbonyl]-2-azabicyclo[2.2.1]heptane-5-carboxylic acidC₁₂H₁₉NO₄241.29
2165427-66-5Ethyl (2R)-1-sulfamoylpyrrolidine-2-carboxylateC₇H₁₄N₂O₄S222.27
2165430-74-82-[(2S,4S)-1-[(tert-Butoxy)carbonyl]-4-methoxypyrrolidin-2-yl]acetic acidC₁₂H₂₁NO₅259.30
2165444-98-2(3R,3aS,6R,7R,8aS)-3,6,8,8-Tetramethyloctahydro-1H-3a,7-methanoazulen-6-olC₁₅H₂₆O222.37
2165448-13-3(1S,2R,5R,6S)-2-((tert-Butoxycarbonyl)amino)bicyclo[3.1.0]hexane-6-carboxylic acidC₁₂H₁₉NO₄241.29
2165457-33-8(2S,4S)-2-{[(tert-Butoxy)carbonyl]amino}-4-carbamoyl-4-fluorobutanoic acidC₁₀H₁₇FN₂O₅264.25
2165462-55-3rac-(3R,4R)-1-((tert-Butoxy)carbonyl)-3,4-dimethylpyrrolidine-3-carboxylic acidC₁₂H₂₁NO₄243.30
2165477-08-5(2S)-2-Methyl-1,4-oxazepaneC₆H₁₃NO115.18
2165489-69-8(S)-4-(tert-Butoxycarbonyl)-1,4-oxazepane-7-carboxylic acidC₁₁H₁₉NO₅245.28
21655-48-1Rel-(2R,6S)-2,6-dimethylpiperazineC₆H₁₄N₂114.19
21655-84-59H-Pyrido(3,4-b)indole, 1-methyl-, hydrochloride (1:1)C₁₂H₁₁ClN₂218.69
2165501-62-0Rel-(3R)-piperidine-3-sulfonamideC₅H₁₂N₂O₂S164.23
2165522-35-8(2R)-2-{[(tert-Butoxy)carbonyl]amino}-3-(2-methoxyethoxy)propanoic acidC₁₁H₂₁NO₆263.29
2165554-86-7rac-(2R,4R)-4-{[(tert-Butoxy)carbonyl]amino}oxolane-2-carboxylic acidC₁₀H₁₇NO₅231.25
21656-02-0Rhodium hydroxide (Rh(OH)3)H₃O₃Rh153.93
21656-98-42,6-Dichloro-N-[(2E)-pyrrolidin-2-ylidene]anilineC₁₀H₁₀Cl₂N₂229.11
2165605-11-6(7S,8AR)-7-Methoxyoctahydropyrrolo[1,2-A]pyrazineC₈H₁₆N₂O156.23
2165620-19-7(3R,4R)-1-tert-Butoxycarbonyl-4-cyclopropyl-pyrrolidine-3-carboxylic acidC₁₃H₂₁NO₄255.31
2165626-54-8(7S,8aS)-7-Methoxy-octahydropyrrolo(1,2-a)piperazineC₈H₁₆N₂O156.23
2165678-26-0(2S,4R)-2-{[(tert-Butoxy)carbonyl]amino}-4-carbamoyl-4-fluorobutanoic acidC₁₀H₁₇FN₂O₅264.25
2165713-04-0(3S,6S)-4-((tert-Butoxy)carbonyl)-6-methylmorpholine-3-carboxylic acidC₁₁H₁₉NO₅245.28
2165721-73-13-((2R)-1-((tert-Butoxy)carbonyl)piperidin-2-yl)propanoic acidC₁₃H₂₃NO₄257.33
2165729-43-9(2S)-4,4-Difluorooxolane-2-carboxylic acidC₅H₆F₂O₃152.10
216573-01-25-tert-Butyl-3-(3-p-tolyl-ureido)-thiophene-2-carboxylic acid methyl esterC₁₈H₂₂N₂O₃S346.45
216574-58-23-Chloro-4,4-dimethylpent-2-enenitrileC₇H₁₀ClN143.62
216574-71-9Methyl 2-amino-5-tert-butylthiophene-3-carboxylateC₁₀H₁₅NO₂S213.30
2165740-80-51-Methyl-5-{[(2R)-pyrrolidin-2-yl]methyl}-1H-pyrazoleC₉H₁₅N₃165.24
2165752-83-8Ethyl (1S,3R)-3-hydroxycyclohexane-1-carboxylateC₉H₁₆O₃172.22
2165759-34-0(2S)-2-(((tert-Butoxy)carbonyl)amino)-4,4-dimethylhex-5-enoic acidC₁₃H₂₃NO₄257.33
2165771-44-6(3R,4R)-3-(((tert-Butoxy)carbonyl)amino)-4-methoxypentanoic acidC₁₁H₂₁NO₅247.29
2165772-28-9tert-Butyl 3-[(1R)-1-hydroxyethyl]azetidine-1-carboxylateC₁₀H₁₉NO₃201.27
2165773-57-7tert-Butyl (2S,4S)-2-(bromomethyl)-4-fluoropyrrolidine-1-carboxylateC₁₀H₁₇BrFNO₂282.15
2165774-40-1(R)-4-(tert-Butoxycarbonyl)-1,4-oxazepane-7-carboxylic acidC₁₁H₁₉NO₅245.28
2165791-38-6(6S)-6-Methyl-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazineC₇H₁₁N₃137.19
2165791-78-44-((1R,2S)-Rel-2-aminocyclopropyl)phenolC₉H₁₁NO149.19
21658-26-44-Nitrophenyl 4-((aminoiminomethyl)amino)benzoateC₁₄H₁₂N₄O₄300.27
21658-35-53-(Naphthalen-2-yl)propanoic acidC₁₃H₁₂O₂200.24
21658-58-21-Ethyl-2-methylquinolinium tetrafluoroborateC₁₂H₁₄BF₄N259.06
21658-70-8Bodipy 505/515C₁₃H₁₅BF₂N₂248.09
21658-92-4Dimethyl (cyanomethyl)phosphonateC₄H₈NO₃P149.09
21658-95-7Diisopropyl (cyanomethyl)phosphonateC₈H₁₆NO₃P205.19
216581-76-93-Hydroxy-1-adamantyl acrylateC₁₃H₁₈O₃222.28
216582-47-76-Hydroxy-2,3-dihydro-1H-indene-1-carboxylic acidC₁₀H₁₀O₃178.19
216582-95-5[1-(Prop-2-en-1-yl)cyclobutyl]methanolC₈H₁₄O126.20
216584-22-4N,N',N''-Tri-Boc-guanidineC₁₆H₂₉N₃O₆359.42
216584-50-82-Nitro-1-(2-trifluoromethoxyphenyl)ethanoneC₉H₆F₃NO₄249.14
2165843-22-9[(2R,4S)-1-Benzyl-4-fluoropyrrolidin-2-yl]methanolC₁₂H₁₆FNO209.26
2165898-75-7(3R,5R)-5-(Aminomethyl)pyrrolidin-3-olC₅H₁₂N₂O116.16
216590-44-2Actinotetraose hexatiglateC₅₄H₇₈O₂₇1159.19
2165918-09-0tert-Butyl (1S,5R)-1-(hydroxymethyl)-2-azabicyclo[3.1.0]hexane-2-carboxylateC₁₁H₁₉NO₃213.28
2165929-78-0(2R)-2-Cyclobutyl-2-hydroxyacetic acidC₆H₁₀O₃130.14
2165957-32-2tert-Butyl (2S,4S)-2-(aminomethyl)-4-(trifluoromethyl)pyrrolidine-1-carboxylateC₁₁H₁₉F₃N₂O₂268.28
216596-73-53-Hydroxy-N-((S)-2-oxotetrahydrofuran-3-yl)dodecanamideC₁₆H₂₉NO₄299.41
2165969-58-2Fucoidan-Ascophyllum nodosumC₇H₁₄O₇S242.25
2165979-04-2rac-(1R,3R)-3-{[(tert-Butoxy)carbonyl]amino}-1-methylcyclohexane-1-carboxylic acidC₁₃H₂₃NO₄257.33
2165984-16-5(3S)-3-{[(tert-Butoxy)carbonyl]amino}-4-cyclopropylbutanoic acidC₁₂H₂₁NO₄243.30
2165995-73-1trans-2-(Hydroxymethyl)cyclobutanolC₅H₁₀O₂102.13
2165996-89-2(1S)-1-(3,5-Difluoropyridin-4-yl)ethan-1-olC₇H₇F₂NO159.13
2165996-90-5(1R,2S)-1-Fluoro-2-methylcyclopropane-1-carboxylic acidC₅H₇FO₂118.11
2165998-04-7tert-Butyl (2S)-2-ethynyl-2-methylpyrrolidine-1-carboxylateC₁₂H₁₉NO₂209.29
2166-00-94,6-Diphenylpyridazin-3(2H)-oneC₁₆H₁₂N₂O248.28
2166-13-46-(4-Chlorophenyl)-2,3-dihydropyridazin-3-oneC₁₀H₇ClN₂O206.63
2166-14-5Dimethyl 1,2,4,5-tetrazine-3,6-dicarboxylateC₆H₆N₄O₄198.14
2166-31-63-Phenyl-6-pyridazoneC₁₀H₈N₂O172.19

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