CAS number index

CAS numbers starting with 21, page 29

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

Showing 2,801 to 2,900 of 8,045 chemicals

CAS numberChemical nameFormulaMol. weight

2137843-04-81-((1-(((9H-Fluoren-9-yl)methoxy)carbonyl)pyrrolidin-2-yl)methyl)-1H-1,2,3-triazole-4-carboxylic acidC₂₃H₂₂N₄O₄418.45
2137843-87-73-Methyl-1-azaspiro[4.4]nonaneC₉H₁₇N139.24
2137844-54-12-{2-[(tert-Butoxy)carbonyl]-6-oxa-2-azaspiro[3.4]octan-7-yl}acetic acidC₁₃H₂₁NO₅271.31
2137845-30-6(5H,6H,8H-Imidazo(2,1-c)(1,4)oxazin-3-yl)methanamine hydrochlorideC₇H₁₂ClN₃O189.65
2137845-36-23-Benzyl-4-chloro-1H-pyrrolo(2,3-b)pyridineC₁₄H₁₁ClN₂242.71
2137851-37-53-Iodo-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine hydrochlorideC₆H₉ClIN₃285.52
2137851-43-32-(1,2,4-Oxadiazol-3-yl)propan-1-amine hydrochlorideC₅H₁₀ClN₃O163.61
2137851-47-73-(((9H-Fluoren-9-yl)methoxy)carbonyl)-3-azabicyclo(3.3.1)nonane-7-carboxylic acidC₂₄H₂₅NO₄391.47
2137851-57-91-[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)propyl]-1H-1,2,3-triazole-4-carboxylic acidC₂₁H₂₀N₄O₄392.42
2137851-66-03-Cyclopentyl-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acidC₂₄H₂₇NO₄393.48
2137851-84-2rac-(3aR,6aR)-5-(((9H-fluoren-9-yl)methoxy)carbonyl)-hexahydro-2H-furo(2,3-c)pyrrole-6a-carboxylic acidC₂₂H₂₁NO₅379.41
2137851-97-7rac-(3R,4R)-4-Cyclopentyl-1-(((9H-fluoren-9-yl)methoxy)carbonyl)pyrrolidine-3-carboxylic acidC₂₅H₂₇NO₄405.49
2137852-23-24-Amino-3-(pyridin-4-yl)butanoic acid dihydrochlorideC₉H₁₄Cl₂N₂O₂253.13
2137852-60-7rac-2-[(3R,3aS,6aS)-5-{[(9H-fluoren-9-yl)methoxy]carbonyl}-1,1-dioxo-hexahydro-2H-1lambda6-thieno[2,3-c]pyrrol-3-yl]acetic acidC₂₃H₂₃NO₆S441.50
2137854-82-9(5-Oxaspiro(3.4)octan-6-yl)methanesulfonyl chlorideC₈H₁₃ClO₃S224.71
2137856-05-23-(4-(((9H-Fluoren-9-yl)methoxy)carbonyl)-3-methylpiperazin-1-yl)propanoic acidC₂₃H₂₆N₂O₄394.47
2137856-10-92-((1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidin-3-yl)methoxy)acetic acidC₂₃H₂₅NO₅395.45
2137856-17-6rac-(1R,5S)-1-Methyl-3-azabicyclo[3.1.0]hexane hydrochlorideC₆H₁₂ClN133.62
2137857-47-5(4,4-Difluorooxolan-2-yl)methanamineC₅H₉F₂NO137.13
2137857-48-6(4,4-Difluorooxolan-2-yl)methanamine hydrochlorideC₅H₁₀ClF₂NO173.59
2137857-51-1Octahydrocyclopenta[b]pyrrole hydrochlorideC₇H₁₄ClN147.65
2137857-68-0rac-(4aR,7aR)-octahydro-1lambda6-thiopyrano[2,3-c]pyrrole-1,1-dione hydrochlorideC₇H₁₄ClNO₂S211.71
2137857-73-73-(1-Bromo-2,2,2-trifluoroethyl)oxolaneC₆H₈BrF₃O233.03
2137857-93-11-[2-(Hydroxymethyl)azetidin-1-yl]propan-1-oneC₇H₁₃NO₂143.19
2137858-16-1Methyl 5-(chlorosulfonyl)-1-methyl-1H-pyrrole-3-carboxylateC₇H₈ClNO₄S237.66
2137859-18-6(2-Ethyl-1H-imidazol-4-yl)methanamine dihydrochlorideC₆H₁₃Cl₂N₃198.10
2137860-90-1tert-Butyl 4-(piperidin-4-yl)benzoateC₁₆H₂₃NO₂261.37
2137862-31-62-(1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidin-4-yl)-1,3-oxazole-5-carboxylic acidC₂₄H₂₂N₂O₅418.45
2137867-42-43-Bromo-2,5-dimethylbenzene-1-sulfonyl fluorideC₈H₈BrFO₂S267.12
2137870-47-22-(1-Methyl-1H-pyrazol-4-yl)oxolane-2-carboxylic acidC₉H₁₂N₂O₃196.21
2137875-58-0tert-Butyl 8-amino-3,4-dihydrospiro[1,4-benzoxazine-2,1'-cyclopropane]-4-carboxylateC₁₅H₂₀N₂O₃276.34
2137882-84-73-((((tert-Butoxy)carbonyl)amino)methyl)-5,6,7,8-tetrahydroindolizine-1-carboxylic acidC₁₅H₂₂N₂O₄294.35
2137883-62-47-Azabicyclo(2.2.1)heptane-2-carboxylic acid hydrochlorideC₇H₁₂ClNO₂177.63
2137885-71-12-Methyl-2H-indazole-3-sulfonyl chlorideC₈H₇ClN₂O₂S230.68
2137886-32-75-Chloro-2,2-difluoro-2H-(1,3)dioxolo(4,5-b)pyridineC₆H₂ClF₂NO₂193.54
2137886-64-55-Oxo-5,6,7,8-tetrahydroquinoline-3-carboxylic acid hydrochlorideC₁₀H₁₀ClNO₃227.65
2137895-62-4rac-(1R,5R)-2-Oxa-6-azabicyclo(3.2.0)heptane hydrochlorideC₅H₁₀ClNO135.59
2137895-63-52-Methyl-2H,3H,5H,6H,7H,8H-(1,2,4)triazolo(4,3-a)pyrazin-3-one hydrochlorideC₆H₁₁ClN₄O190.63
2137896-32-15-(Fluorosulfonyl)thiophene-3-carboxylic acidC₅H₃FO₄S₂210.21
2137896-61-6(1-Methylcyclopropyl)methanesulfonyl fluorideC₅H₉FO₂S152.19
2137896-67-21,1-Dioxo-1lambda6-thietane-3-sulfinamideC₃H₇NO₃S₂169.23
2137896-99-05-(Difluoromethyl)-1-(1-(((9H-fluoren-9-yl)methoxy)carbonyl)piperidin-4-yl)-1H-1,2,3-triazole-4-carboxylic acidC₂₄H₂₂F₂N₄O₄468.46
2137899-07-97-(Trifluoromethyl)-[1,2,4]triazolo[1,5-a]pyridin-5-olC₇H₄F₃N₃O203.12
2137899-47-77-(Fluorosulfonyl)-2,3-dihydro-1,4-benzodioxine-5-carboxylic acidC₉H₇FO₆S262.21
2137899-91-1rac-(1R,2R)-2-Benzyl-1-methylcyclopropane-1-carboxylic acidC₁₂H₁₄O₂190.24
2137900-93-55-{[(tert-Butoxy)carbonyl]amino}-4H,5H,6H,7H-pyrazolo[1,5-a]pyridine-3-carboxylic acidC₁₃H₁₉N₃O₄281.31
2137903-79-62-Phenyl-1,3-thiazole-5-sulfonyl chlorideC₉H₆ClNO₂S₂259.74
2137912-30-05-Bromo-3-fluoro-2-methoxybenzenesulfonyl fluorideC₇H₅BrF₂O₃S287.08
2137914-27-17-Bromo-1H-indole-3-sulfonyl chlorideC₈H₅BrClNO₂S294.56
2137914-58-8rac-tert-Butyl (1R,2R)-2-(hydroxymethyl)cyclobutane-1-carboxylateC₁₀H₁₈O₃186.25
2137914-62-4(4H,5H,6H,7H-Pyrazolo(1,5-a)pyridin-3-yl)methanamine dihydrochlorideC₈H₁₅Cl₂N₃224.13
2137916-60-8(1-Methyl-2-oxabicyclo(2.2.2)octan-4-yl)methanamineC₉H₁₇NO155.24
2137916-98-2Potassium 2-(2,2-difluorocyclopropyl)acetateC₅H₅F₂KO₂174.19
2137917-12-33-(Aminomethyl)-3-phenyl-1-(trifluoromethyl)cyclobutan-1-ol hydrochlorideC₁₂H₁₅ClF₃NO281.70
2137930-52-8Pyrrolidine-3-sulfonyl fluoride hydrochlorideC₄H₉ClFNO₂S189.64
2137931-24-71-(Oxetan-3-yl)-1H-pyrazol-3-amineC₆H₉N₃O139.16
2137931-61-24-({[(tert-Butoxy)carbonyl]amino}methyl)-1-{[(9H-fluoren-9-yl)methoxy]carbonyl}piperidine-4-carboxylic acidC₂₇H₃₂N₂O₆480.56
2137931-72-54-(1-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2,2,2-trifluoroethyl)benzoic acidC₂₄H₁₈F₃NO₄441.40
2137931-76-92-((1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidin-4-yl)methyl)-1,3-thiazole-5-carboxylic acidC₂₅H₂₄N₂O₄S448.54
2137936-30-0(3-Nitrophenyl)methanesulfonyl fluorideC₇H₆FNO₄S219.19
2137936-74-23-Amino-5H,6H,7H-pyrrolo[3,4-b]pyridin-7-one hydrochlorideC₇H₈ClN₃O185.61
2137943-92-9Methyl 5-iodo-1,2-oxazole-3-carboxylateC₅H₄INO₃253.00
2137944-14-8tert-Butyl 3-(3-oxobutyl)azetidine-1-carboxylateC₁₂H₂₁NO₃227.30
2137944-58-05-Azaspiro(2.4)heptane-7-carboxylic acid hydrochlorideC₇H₁₂ClNO₂177.63
2137951-17-64-(Pent-4-yn-1-yl)morpholine hydrochlorideC₉H₁₆ClNO189.69
2137952-46-43-Bromo-2,6-difluoroaniline hydrochlorideC₆H₅BrClF₂N244.47
2137952-54-4tert-Butyl 4-azido-1-oxa-9-azaspiro(5.5)undecane-9-carboxylateC₁₄H₂₄N₄O₃296.37
2137958-01-93-Cyclopentyl-1-methyl-1H-pyrazole-4-sulfonyl chlorideC₉H₁₃ClN₂O₂S248.74
2137958-08-62-(Difluoromethyl)-3,4-dihydro-2H-1-benzopyran-3-carboxylic acidC₁₁H₁₀F₂O₃228.19
2137958-17-71-Benzyl-5-(propan-2-yl)pyrrolidin-3-oneC₁₄H₁₉NO217.31
2137970-32-0Sodium 2-(1-methyl-1H-1,2,4-triazol-5-yl)acetateC₅H₆N₃NaO₂163.11
2137970-46-61-(2,5-Dimethyl-1H-imidazol-4-yl)methanamine dihydrochlorideC₆H₁₃Cl₂N₃198.10
2137970-53-52-Methyl-3H-imidazo[4,5-b]pyridine-7-carboxylic acid hydrochlorideC₈H₈ClN₃O₂213.62
2137971-99-21-(9H-Fluoren-9-ylmethoxycarbonyl)-3-prop-2-enylazetidine-3-carboxylic acidC₂₂H₂₁NO₄363.41
2137981-11-24-Bromo-2,3-dihydro-1,2-benzothiazol-3-oneC₇H₄BrNOS230.09
2137984-12-2tert-Butyl 2-(2-aminoethyl)-4H,5H,6H,7H-(1,3)thiazolo(5,4-c)pyridine-5-carboxylateC₁₃H₂₁N₃O₂S283.40
2137986-11-7tert-Butyl 4-(2,5-dioxooxolan-3-yl)piperidine-1-carboxylateC₁₄H₂₁NO₅283.32
2137986-81-15-(Methoxycarbonyl)-1-methyl-1H-pyrrolo(2,3-b)pyridine-2-carboxylic acidC₁₁H₁₀N₂O₄234.21
2137986-97-9rac-(1R,5R)-3-Oxaspiro(bicyclo(3.1.0)hexane-2,1'-cyclobutane)-1-carboxylic acidC₉H₁₂O₃168.19
2137987-01-82-(Aminomethyl)pyridin-4-amine dihydrochlorideC₆H₁₁Cl₂N₃196.08
2137987-02-93-Bromo-5,6,7,8-tetrahydroquinolin-5-one hydrochlorideC₉H₉BrClNO262.53
2137987-36-9rac-(3aR,6aS)-6a-methoxy-hexahydro-2H-cyclopenta(b)furan-3a-amine hydrochlorideC₈H₁₆ClNO₂193.67
2137987-37-0rac-Methyl (3aR,5R,6aR)-5-(((tert-butoxy)carbonyl)amino)-octahydrocyclopenta(c)pyrrole-3a-carboxylateC₁₄H₂₄N₂O₄284.36
2137989-56-9Hexahydro-2H-1lambda6-[1,2,5]thiadiazolo[2,3-a]piperazine-1,1-dione hydrochlorideC₅H₁₂ClN₃O₂S213.69
2137990-67-92-(1-Methyl-1H-pyrazol-5-yl)oxolane-2-carboxylic acidC₉H₁₂N₂O₃196.21
2137991-87-61-(3-(((tert-Butoxy)carbonyl)amino)propyl)-1H-pyrazole-3-carboxylic acidC₁₂H₁₉N₃O₄269.30
2137993-02-12-Methyl-7-(trifluoromethyl)-[1,2,4]triazolo[1,5-a]pyridin-5-olC₈H₆F₃N₃O217.15
2137993-60-1Methyl 2-(4-methanesulfonyl-1H-pyrazol-1-yl)acetateC₇H₁₀N₂O₄S218.23
2137994-46-6tert-Butyl N-(3-formyl-4-hydroxypyridin-2-yl)carbamateC₁₁H₁₄N₂O₄238.24
2137995-85-6(3-Chloropyridin-2-yl)methanesulfonamideC₆H₇ClN₂O₂S206.65
2137997-74-9tert-Butyl 5,5-difluoro-2,7-diazaspiro[3.4]octane-2-carboxylateC₁₁H₁₈F₂N₂O₂248.27
2137998-09-31-Cyclopropyl-1H-pyrazol-3-olC₆H₈N₂O124.14
2137999-31-43-(4-Methanesulfonyl-1H-pyrazol-1-yl)benzoic acidC₁₁H₁₀N₂O₄S266.28
2138-22-94-ChlorocatecholC₆H₅ClO₂144.56
2138-24-1Tetrahexylammonium iodideC₂₄H₅₂IN481.59
2138-33-23-(Dimethylamino)-1-(4-methoxyphenyl)propan-1-oneC₁₂H₁₇NO₂207.27
2138-34-31-(4-Bromophenyl)-3-(dimethylamino)-1-propanoneC₁₁H₁₄BrNO256.14
2138-39-83-(Dimethylamino)-1-(3-nitrophenyl)propan-1-oneC₁₁H₁₄N₂O₃222.24
2138-40-13-(Dimethylamino)-1-(4-nitrophenyl)-1-propanoneC₁₁H₁₄N₂O₃222.24
2138-43-44-IsopropylcatecholC₉H₁₂O₂152.19

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