CAS number index

CAS numbers starting with 21, page 30

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

Showing 2,901 to 3,000 of 8,045 chemicals

CAS numberChemical nameFormulaMol. weight

2138-48-93-IsopropylcatecholC₉H₁₂O₂152.19
2138-49-03,5-DiisopropylpyrocatecholC₁₂H₁₈O₂194.27
2138-98-92-Amino-5-(2-chlorophenyl)-1,3,4-oxadiazoleC₈H₆ClN₃O195.61
2138001-03-16-(Bromomethyl)tricyclo[3.2.1.02,4]octaneC₉H₁₃Br201.11
2138004-01-8rac-(2R,5R)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)-5-methylpyrrolidine-2-carboxylic acidC₂₁H₂₁NO₄351.40
2138004-27-82-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-5-fluoro-1,2,3,4-tetrahydroisoquinoline-8-carboxylic acidC₂₅H₂₀FNO₄417.44
2138004-37-0rac-(2R,6S)-4-{[(9H-fluoren-9-yl)methoxy]carbonyl}-6-methylmorpholine-2-carboxylic acidC₂₁H₂₁NO₅367.40
2138004-41-6N,N-Dimethyl-5-(pyrrolidin-2-yl)-1,2,4-oxadiazol-3-amine hydrochlorideC₈H₁₅ClN₄O218.69
2138005-01-1rac-Methyl (1R,3S,4S)-3-(aminomethyl)-4-hydroxycyclopentane-1-carboxylate hydrochlorideC₈H₁₆ClNO₃209.67
2138005-31-7rac-(2R,3R)-3-(((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)methyl)oxolane-2-carboxylic acidC₂₁H₂₁NO₅367.40
2138005-55-51-Methyl-5-oxo-1H,4H,5H-pyrazolo(4,3-b)pyridine-6-carboxylic acidC₈H₇N₃O₃193.16
2138005-56-6rac-(1R,2S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)cyclobutane-1-carboxylic acidC₂₀H₁₉NO₄337.38
2138005-61-32-(3-Cyclopropyl-1,2,4-oxadiazol-5-yl)morpholine hydrochlorideC₉H₁₄ClN₃O₂231.68
2138005-68-02-(4-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperazin-1-yl)-2-methylpropanoic acidC₂₃H₂₆N₂O₄394.47
2138005-71-55-Amino-1-[(3-chlorophenyl)methyl]-1,2-dihydropyridin-2-one hydrochlorideC₁₂H₁₂Cl₂N₂O271.15
2138005-84-03-(Aminomethyl)-5,6,7,8-tetrahydroindolizine-1-carboxamide hydrochlorideC₁₀H₁₆ClN₃O229.71
2138006-50-3(2-Oxabicyclo(2.2.2)octan-1-yl)methanamineC₈H₁₅NO141.21
2138008-94-11-Ethyl-6-fluoro-2-(1H-imidazol-2-yl)-2,3-dihydro-1H-indoleC₁₃H₁₄FN₃231.27
2138009-34-22-(4-(((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)methyl)oxan-4-yl)acetic acidC₂₃H₂₅NO₅395.45
2138009-61-53-(1H-Pyrazol-3-yl)pyridin-4-amineC₈H₈N₄160.18
2138010-70-3Sodium 6-hydroxypyrimidine-4-carboxylateC₅H₃N₂NaO₃162.08
2138010-79-2rac-((1R,6R,7S)-Bicyclo(4.2.0)octan-7-yl)methanesulfonyl chlorideC₉H₁₅ClO₂S222.74
2138010-82-7(4-Bromo-1-methyl-1H-pyrazol-3-yl)methanesulfonyl chlorideC₅H₆BrClN₂O₂S273.54
2138012-68-5tert-Butyl 3-bromo-2-methoxy-5-(trifluoromethyl)piperidine-1-carboxylateC₁₂H₁₉BrF₃NO₃362.19
2138015-66-22-tert-Butyl-1,3-thiazole-5-sulfonyl chlorideC₇H₁₀ClNO₂S₂239.75
2138017-49-7[2-(Trifluoromethyl)pyridin-3-yl]methanesulfonyl chlorideC₇H₅ClF₃NO₂S259.64
2138018-32-13-(1-Bromo-2-methylpropan-2-yl)oxaneC₉H₁₇BrO221.14
2138021-00-63-(Chloromethyl)-1H,4H,6H,7H-pyrano(4,3-c)pyrazole hydrochlorideC₇H₁₀Cl₂N₂O209.08
2138021-20-02-(1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-2,3-dihydro-1H-indol-6-yl)acetic acidC₂₅H₂₁NO₄399.45
2138022-11-22-(4H,6H,7H-Pyrano(4,3-d)(1,3)thiazol-2-yl)ethan-1-amine dihydrochlorideC₈H₁₄Cl₂N₂OS257.19
2138022-33-83-Ethynylthiane 1,1-dioxideC₇H₁₀O₂S158.22
2138023-00-23-Chloro-6-(4-methanesulfonyl-1H-pyrazol-1-yl)pyridine-2-carboxylic acidC₁₀H₈ClN₃O₄S301.71
2138023-14-8tert-Butyl N-(6-azaspiro(3.4)octan-8-yl)carbamate hydrochlorideC₁₂H₂₃ClN₂O₂262.78
2138023-67-1tert-Butyl 1-(propan-2-yl)-2,7-diazaspiro[3.5]nonane-2-carboxylate hydrochlorideC₁₅H₂₉ClN₂O₂304.86
2138023-72-8(5-Cyclopropyl-1,2-oxazol-3-yl)methanesulfonyl chlorideC₇H₈ClNO₃S221.66
2138024-11-86,9-Dioxa-2-azaspiro[4.5]decane hydrochlorideC₇H₁₄ClNO₂179.65
2138024-32-33-((tert-Butoxy)carbonyl)oxetane-3-carboxylic acidC₉H₁₄O₅202.21
2138024-95-8rac-(1R,5R,6R)-3-(((9H-Fluoren-9-yl)methoxy)carbonyl)-3-azabicyclo(3.2.0)heptane-6-carboxylic acidC₂₂H₂₁NO₄363.41
2138026-85-25-(Bromomethyl)-3,4-dihydro-1H-2-benzopyranC₁₀H₁₁BrO227.10
2138027-69-53-Formyl-5-(pyrrolidin-1-yl)benzoic acidC₁₂H₁₃NO₃219.24
2138027-71-9Bicyclo(3.2.0)heptane-6-sulfonyl chlorideC₇H₁₁ClO₂S194.68
2138027-75-32-Methyl-octahydroindolizine-6-carboxylic acid hydrochlorideC₁₀H₁₈ClNO₂219.71
2138028-62-1tert-Butyl N-[(5-acetyl-4-methyl-1,3-thiazol-2-yl)methyl]carbamateC₁₂H₁₈N₂O₃S270.35
2138031-00-0(4-Methyl-2-oxabicyclo(2.1.1)hexan-1-yl)methanamineC₇H₁₃NO127.19
2138031-86-22-Amino-7-methyl-5H,6H,7H,8H-imidazo[1,2-a]pyridine-3-carbonitrileC₉H₁₂N₄176.22
2138032-33-22-(5-Methyl-1,2-oxazol-4-yl)ethan-1-amine hydrochlorideC₆H₁₁ClN₂O162.62
2138032-39-82-(1,3-Dioxolan-2-yl)-1,3-thiazole-5-sulfonyl chlorideC₆H₆ClNO₄S₂255.70
2138032-69-4Sodium 5-bromo-3-carboxypyridine-2-carboxylateC₇H₃BrNNaO₄268.00
2138033-02-8rac-(1R,2R)-2-(1-Methyl-1H-pyrazol-5-yl)cyclopropane-1-carbaldehydeC₈H₁₀N₂O150.18
2138033-31-33-(Methoxycarbonyl)thiolane-3-carboxylic acidC₇H₁₀O₄S190.22
2138033-69-78-Bromo-5-methylquinazolin-2-amineC₉H₈BrN₃238.09
2138033-83-5(1-Methoxy-3,5-dimethylcyclohexyl)methanolC₁₀H₂₀O₂172.27
2138033-84-62-Cyclobutylazetidine hydrochlorideC₇H₁₄ClN147.65
2138034-19-02-Chloro-1-(1,2-thiazol-4-yl)ethan-1-oneC₅H₄ClNOS161.61
2138034-30-5rac-(1R,6S,7R)-7-Bromobicyclo(4.1.0)heptane-1-carboxylic acidC₈H₁₁BrO₂219.08
2138034-43-01-(2-Oxoethyl)cyclopropane-1-carbonitrileC₆H₇NO109.13
2138034-54-3N-(But-3-yn-1-yl)cyclopentanamine hydrochlorideC₉H₁₆ClN173.69
2138035-30-84-Amino-1-phenylpiperidine-4-carboxylic acid dihydrochlorideC₁₂H₁₈Cl₂N₂O₂293.19
2138035-37-5rac-(2R,3S)-3-Phenylpiperidine-2-carboxylic acid hydrochlorideC₁₂H₁₆ClNO₂241.72
2138035-81-9tert-Butyl 3-bromo-4-hydroxy-5,6,7,8-tetrahydro-1,6-naphthyridine-6-carboxylateC₁₃H₁₇BrN₂O₃329.19
2138036-18-52-(Azetidin-3-yloxy)acetamide, trifluoroacetic acidC₇H₁₁F₃N₂O₄244.17
2138038-26-1(4-Bromo-2-tert-butyl-1H-imidazol-5-yl)methanolC₈H₁₃BrN₂O233.11
2138038-32-91-Bromo-3-fluoro-5-(pentafluoroethyl)benzeneC₈H₃BrF₆293.00
2138038-56-7tert-Butyl N-{3-hydroxy-7-oxaspiro[3.5]nonan-1-yl}carbamateC₁₃H₂₃NO₄257.33
2138039-28-64-Cyanopyridine-2-sulfonyl fluorideC₆H₃FN₂O₂S186.17
2138040-04-52-(((1-((tert-Butoxy)carbonyl)-1-azaspiro(5.5)undecan-4-yl)((((9H-fluoren-9-yl)methoxy)carbonyl))amino)methyl)furan-3-carboxylic acidC₃₆H₄₂N₂O₇614.74
2138040-08-98-Amino-5-thiaspiro[3.5]nonane-2-carboxamide hydrochlorideC₉H₁₇ClN₂OS236.77
2138040-28-3(4-(Hydroxymethyl)pyrrolidin-2-yl)methanol hydrochlorideC₆H₁₄ClNO₂167.64
2138040-45-43-(Dimethylphosphoryl)benzaldehydeC₉H₁₁O₂P182.16
2138041-85-54-[2-Bromo-4-(chloromethyl)phenyl]morpholine hydrochlorideC₁₁H₁₄BrCl₂NO327.05
2138042-45-0Lithium(1+) 4-(2-methyloxetan-2-yl)benzoateC₁₁H₁₁LiO₃198.15
2138042-47-2Imidazo[2,1-b][1,3]thiazole-5-sulfonamideC₅H₅N₃O₂S₂203.25
2138043-63-5Bicyclo[5.1.0]octan-4-amine hydrochlorideC₈H₁₆ClN161.68
2138044-63-86-Chloro-3-hydroxy-2,4-dimethylbenzene-1-sulfonyl chlorideC₈H₈Cl₂O₃S255.12
2138045-21-13-(2-Fluoropropan-2-yl)pyrrolidine, trifluoroacetic acidC₉H₁₅F₄NO₂245.22
2138045-41-55,6,7,8-Tetrahydro-1,6-naphthyridin-4-ol dihydrochlorideC₈H₁₂Cl₂N₂O223.10
2138045-58-41-(3-Chloropropyl)-1H-1,2,4-triazole hydrochlorideC₅H₉Cl₂N₃182.05
2138046-89-45-Bromo-2-[(piperazin-1-yl)methyl]pyrimidine dihydrochlorideC₉H₁₅BrCl₂N₄330.06
2138047-41-1tert-Butyl 3-(carbamoyloxy)azetidine-1-carboxylateC₉H₁₆N₂O₄216.24
2138047-51-3(4-Bromo-6-chloropyridin-2-yl)methanamine hydrochlorideC₆H₇BrCl₂N₂257.95
2138051-85-9Methyl 6-(trifluoroacetyl)-3,4-dihydro-2H-oxazine-4-carboxylateC₈H₈F₃NO₄239.15
2138052-28-3Methyl N-(3-aminocyclobutyl)-N-methylcarbamate hydrochlorideC₇H₁₅ClN₂O₂194.66
2138054-07-41-Bromo-2-fluoro-3-(pentafluoroethyl)benzeneC₈H₃BrF₆293.00
2138054-15-44-((1H-1,2,3,4-Tetrazol-5-yl)methyl)aniline dihydrochlorideC₈H₁₁Cl₂N₅248.12
2138054-50-72-(3-Aminooxetan-3-yl)acetic acid hydrochlorideC₅H₁₀ClNO₃167.59
2138054-90-5(1-Methyl-1H-imidazol-2-yl)(1-phenylcyclopropyl)methanamine hydrochlorideC₁₄H₁₈ClN₃263.77
2138056-97-83-Iodo-2-methyl-4H,5H-pyrazolo[1,5-a]pyrazin-4-oneC₇H₆IN₃O275.05
2138057-01-71-(Aminomethyl)-2-azabicyclo(2.2.1)heptan-3-oneC₇H₁₂N₂O140.19
2138059-24-03-(3-Bromophenyl)-1-[(tert-butoxy)carbonyl]pyrrolidine-3-carboxylic acidC₁₆H₂₀BrNO₄370.24
2138059-42-22-(2-Bromo-4-chlorophenyl)ethan-1-amine hydrochlorideC₈H₁₀BrCl₂N270.99
2138059-95-5tert-Butyl 3-amino-3-methylazetidine-1-carboxylate hydrochlorideC₉H₁₉ClN₂O₂222.72
2138060-23-61-Acetyl-4-methyl-1,2,3,4-tetrahydroquinoline-7-sulfonyl chlorideC₁₂H₁₄ClNO₃S287.77
2138062-34-5rac-(3R,4S)-4-(4H-1,2,4-Triazol-4-yl)oxolan-3-amine dihydrochlorideC₆H₁₂Cl₂N₄O227.09
2138063-20-22-Iodo-3-methyl-6-(trifluoromethyl)-3H-imidazo[4,5-b]pyridineC₈H₅F₃IN₃327.05
2138064-47-63-Bromo-5-(trifluoromethyl)furan-2-carbaldehydeC₆H₂BrF₃O₂242.98
2138064-54-51-Oxa-7-azaspiro[4.4]nonane, trifluoroacetic acidC₉H₁₄F₃NO₃241.21
2138066-00-7tert-Butyl 7-aminoheptanoate hydrochlorideC₁₁H₂₄ClNO₂237.77
2138066-08-51-(2-Azidoethyl)piperidin-4-ol hydrochlorideC₇H₁₅ClN₄O206.68
2138067-58-81-(2-Oxoethyl)cyclobutane-1-carbonitrileC₇H₉NO123.16
2138069-63-1tert-Butyl N-(4-(3-aminophenyl)oxan-4-yl)carbamateC₁₆H₂₄N₂O₃292.38

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