CAS number index

CAS numbers starting with 21, page 23

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

Showing 2,201 to 2,300 of 8,045 chemicals

CAS numberChemical nameFormulaMol. weight

2137036-69-0(2S)-2-((4-Fluorophenoxy)methyl)pyrrolidine hydrochlorideC₁₁H₁₅ClFNO231.70
2137036-93-04-[(1S)-1-Aminoethyl]benzene-1-sulfonamide hydrochlorideC₈H₁₃ClN₂O₂S236.72
2137037-13-7rac-tert-Butyl N-[(1r,3r)-3-(bromomethyl)cyclobutyl]carbamateC₁₀H₁₈BrNO₂264.16
2137058-04-7(((2S,4S)-1-(6-Fluoropyrimidin-4-yl)-4-methoxypyrrolidin-2-yl)methyl)dimethylamineC₁₂H₁₉FN₄O254.31
2137058-21-8tert-Butyl 3-((1S)-1-aminoethyl)azetidine-1-carboxylateC₁₀H₂₀N₂O₂200.28
2137062-11-21-tert-Butyl 2-chloromethyl (2S,4R)-4-(difluoromethoxy)pyrrolidine-1,2-dicarboxylateC₁₂H₁₈ClF₂NO₅329.73
2137062-42-9(2S,4S)-1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-4-fluoro-2-methylpyrrolidine-2-carboxylic acidC₂₁H₂₀FNO₄369.39
2137065-52-0tert-Butyl (2R)-2-methyl-5-oxopyrrolidine-2-carboxylateC₁₀H₁₇NO₃199.25
2137065-83-72-{[(3S)-1-[(tert-Butoxy)carbonyl]pyrrolidin-3-yl]({[(9H-fluoren-9-yl)methoxy]carbonyl})amino}acetic acidC₂₆H₃₀N₂O₆466.53
2137066-87-4N-((1S,3s)-3-(Hydroxymethyl)cyclobutyl)acetamideC₇H₁₃NO₂143.19
2137068-64-3(S)-1-Amino-3-methoxypropan-2-ol hclC₄H₁₂ClNO₂141.60
2137069-12-4(S)-5-((Methylamino)methyl)pyrrolidin-2-one hydrochlorideC₆H₁₃ClN₂O164.64
2137072-30-9Potassium 2-{[(3S)-3-methoxypyrrolidin-1-yl]methyl}-1,3-oxazole-4-carboxylateC₁₀H₁₃KN₂O₄264.32
2137073-08-4Rac-(1r,3r)-3-fluoro-1-phenylcyclobutane-1-carbaldehydeC₁₁H₁₁FO178.21
2137073-66-4tert-Butyl (2S)-2-((1S)-1,2-dihydroxyethyl)morpholine-4-carboxylateC₁₁H₂₁NO₅247.29
2137073-76-6(2R)-2-Amino-N-ethyl-3-(1H-indol-3-yl)propanamide hydrochlorideC₁₃H₁₈ClN₃O267.76
2137078-59-0(3S,4R)-1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-4-phenylpyrrolidine-3-carboxylic acidC₂₆H₂₃NO₄413.47
2137082-08-5(2R)-2-Amino-3-(1-methyl-1H-imidazol-4-yl)propanoic acid dihydrochlorideC₇H₁₃Cl₂N₃O₂242.11
2137082-40-5(S)-2-(1-(((9H-Fluoren-9-yl)methoxy)carbonyl)pyrrolidin-3-yl)acetic acidC₂₁H₂₁NO₄351.40
2137082-41-6rac-2-{[(1R,4r)-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]oxy}acetic acidC₂₃H₂₅NO₅395.45
2137086-93-0(9H-Fluoren-9-yl)methyl N-((1S)-1-(4-aminophenyl)ethyl)carbamateC₂₃H₂₂N₂O₂358.44
2137090-35-6(8aR)-2-Benzyl-octahydropyrrolo(1,2-a)pyrazine-1,4,7-trioneC₁₄H₁₄N₂O₃258.28
2137090-83-4(2R,4R)-1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-4-methoxypyrrolidine-2-carboxylic acidC₂₁H₂₁NO₅367.40
2137091-09-7rac-(1s,3s)-3-((1-((tert-Butoxy)carbonyl)azetidin-3-yl)((((9H-fluoren-9-yl)methoxy)carbonyl))amino)cyclobutane-1-carboxylic acidC₂₈H₃₂N₂O₆492.57
2137091-12-2(1R,2R)-2-(Methoxymethyl)-1-methylcyclopropane-1-carboxylic acidC₇H₁₂O₃144.17
2137092-55-6(2S)-1-((2-Methyl-2H-1,2,3,4-tetrazol-5-yl)methyl)pyrrolidine-2-carboxylic acid hydrochlorideC₈H₁₄ClN₅O₂247.69
2137093-91-3tert-Butyl (2R)-2-(2-methoxyacetyl)pyrrolidine-1-carboxylateC₁₂H₂₁NO₄243.30
2137095-41-9Potassium 2-(((3S)-3-hydroxypyrrolidin-1-yl)methyl)-1,3-oxazole-4-carboxylateC₉H₁₁KN₂O₄250.29
2137095-89-55-((((3R)-1-((tert-Butoxy)carbonyl)piperidin-3-yl)((((9H-fluoren-9-yl)methoxy)carbonyl))amino)methyl)-1H-pyrrole-2-carboxylic acidC₃₁H₃₅N₃O₆545.64
2137096-29-6(1R)-4-Nitro-2,3-dihydro-1H-inden-1-amine hydrochlorideC₉H₁₁ClN₂O₂214.65
2137097-77-7tert-Butyl (S)-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)but-3-en-2-yl)carbamateC₁₅H₂₈BNO₄297.20
2137098-40-7(1R)-1-(4-Methoxy-3-methylphenyl)ethan-1-amine hydrochlorideC₁₀H₁₆ClNO201.70
2137099-14-8(3S)-1-Ethylpiperidin-3-amine dihydrochlorideC₇H₁₈Cl₂N₂201.14
2137099-16-0rac-(2R,4r,6S)-4-(Bromomethyl)-2,6-dimethyloxaneC₈H₁₅BrO207.11
2137099-42-2(2R)-2-((tert-Butoxy)methyl)piperidine hydrochlorideC₁₀H₂₂ClNO207.75
2137100-59-32-((3R)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)pyrrolidin-3-yl)acetic acidC₂₁H₂₁NO₄351.40
2137134-71-3rac-(1s,3s)-3-({1-[(tert-Butoxy)carbonyl]piperidin-4-yl}({[(9H-fluoren-9-yl)methoxy]carbonyl})amino)cyclobutane-1-carboxylic acidC₃₀H₃₆N₂O₆520.63
2137134-93-9rac-(1s,3s)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)(methyl)amino)cyclobutane-1-carboxylic acidC₂₁H₂₁NO₄351.40
2137135-34-1(2S)-1-Sulfanylbutan-2-olC₄H₁₀OS106.19
2137135-65-8(2R)-2-[Benzyl({[(9H-fluoren-9-yl)methoxy]carbonyl})amino]propanoic acidC₂₅H₂₃NO₄401.46
2137135-74-9(3R,5S)-5-(5-Phenyl-1H-1,2,4-triazol-3-yl)pyrrolidin-3-ol dihydrochlorideC₁₂H₁₆Cl₂N₄O303.19
2137135-78-3Methyl (2S)-2-amino-4-((trifluoromethyl)sulfanyl)butanoate hydrochlorideC₆H₁₁ClF₃NO₂S253.67
2137136-14-0Rac-((1r,3r)-3-fluoro-1-phenylcyclobutyl)methanamineC₁₁H₁₄FN179.24
2137136-38-8(3R)-3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-5-methoxy-5-oxopentanoic acidC₂₁H₂₁NO₆383.40
2137142-47-1(2S,4R)-1-((S)-2-Amino-3,3-dimethylbutanoyl)-4-hydroxy-N-(4-(4-methylthiazol-5-yl)benzyl)pyrrolidine-2-carboxamide dihydrochlorideC₂₂H₃₂Cl₂N₄O₃S503.50
2137142-63-1(2R,4S)-4-Azido-1-{[(9H-fluoren-9-yl)methoxy]carbonyl}pyrrolidine-2-carboxylic acidC₂₀H₁₈N₄O₄378.39
2137143-57-6(1s,3s)-1-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-hydroxycyclobutane-1-carboxylic acidC₂₀H₁₉NO₅353.37
2137143-61-2(1R)-2-Amino-1-(2,3-dihydro-1,4-benzodioxin-6-yl)ethan-1-ol hydrochlorideC₁₀H₁₄ClNO₃231.68
2137143-73-62-(Rac-(1r,4r)-4-aminocyclohexyl)pyrimidin-4-ol dihydrochlorideC₁₀H₁₇Cl₂N₃O266.17
2137143-79-2(2S)-2-Amino-3-(2-oxo-2,3-dihydro-1,3-benzoxazol-5-yl)propanoic acid hydrochlorideC₁₀H₁₁ClN₂O₄258.66
2137146-02-0(1R)-1-(4-Bromo-5-fluoro-2-methylphenyl)ethan-1-amine hydrochlorideC₉H₁₂BrClFN268.56
2137146-05-3(2R)-2-Amino-N,N-dimethylbutanamide hydrochlorideC₆H₁₅ClN₂O166.65
2137150-32-2(3S)-3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-{spiro[2.2]pentan-1-yl}propanoic acidC₂₃H₂₃NO₄377.44
21373-30-83-(2,4,5-Trihydroxyphenyl)-DL-alanineC₉H₁₁NO₅213.19
2137345-43-6tert-Butyl N-[(2R)-3-(ethylamino)butan-2-yl]carbamateC₁₁H₂₄N₂O₂216.32
213738-77-3(±)-Oxiran-2-ylmethyl (9Z)-hexadec-9-enoateC₁₉H₃₄O₃310.48
2137420-26-7(1S)-1-(2-Methyl-2,3-dihydro-1-benzofuran-5-yl)ethan-1-amine hydrochlorideC₁₁H₁₆ClNO213.71
2137420-71-2(4S)-3-[(Oxolan-3-yl)methanesulfonyl]-1,3-thiazolidine-4-carboxylic acidC₉H₁₅NO₅S₂281.36
2137422-00-3rac-(1s,3s)-3-((1-((tert-Butoxy)carbonyl)azepan-4-yl)((((9H-fluoren-9-yl)methoxy)carbonyl))amino)cyclobutane-1-carboxylic acidC₃₁H₃₈N₂O₆534.65
2137424-57-6tert-Butyl 2-formyl-2-methylmorpholine-4-carboxylateC₁₁H₁₉NO₄229.28
2137426-56-1(1s,3s)-3-({1-[(tert-Butoxy)carbonyl]piperidin-3-yl}({[(9H-fluoren-9-yl)methoxy]carbonyl})amino)cyclobutane-1-carboxylic acidC₃₀H₃₆N₂O₆520.63
213743-31-87-Cyclopentyl-5-(4-phenoxy)phenyl-7H-pyrrolo(2,3-d)pyrimidin-4-ylamineC₂₃H₂₂N₄O370.46
2137432-69-8rac-(1R,2S)-4-Aminocyclohexane-1,2-diol hydrochlorideC₆H₁₄ClNO₂167.64
2137432-81-4rac-[(1R,5R,6S)-6-Aminobicyclo[3.2.0]heptan-3-yl]methanolC₈H₁₅NO141.21
2137432-91-6rac-(3aR,6aR)-hexahydro-2H-furo(3,2-b)pyrrole-5-carboxylic acid hydrochlorideC₇H₁₂ClNO₃193.63
2137434-38-7rac-[(3aR,6aR)-hexahydrofuro[2,3-c]furan-2-yl]methanamineC₇H₁₃NO₂143.19
2137440-08-3rac-(6R,7R)-7-Amino-2-ethyl-1-(propan-2-yl)-2-azaspiro(3.4)octan-6-ol dihydrochlorideC₁₂H₂₆Cl₂N₂O285.26
2137440-44-7rac-[(1R,5R)-6-Aminobicyclo[3.2.0]heptan-3-yl]methanolC₈H₁₅NO141.21
2137443-10-61-[2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)propanoyl]piperidine-3-carboxylic acidC₂₄H₂₆N₂O₅422.48
2137443-49-1Methyl 2-amino-2-(2-iodophenyl)acetate hydrochlorideC₉H₁₁ClINO₂327.55
2137446-63-83-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-2-(4-hydroxyphenyl)-1,3-thiazolidine-4-carboxylic acidC₂₅H₂₁NO₅S447.51
2137447-79-91-(2-Aminopropanoyl)piperidine-3-carboxylic acid hydrochlorideC₉H₁₇ClN₂O₃236.70
2137447-97-14-(((9H-Fluoren-9-yl)methoxy)carbonyl)thiomorpholine-3-carboxylic acid 1,1-dioxideC₂₀H₁₉NO₆S401.44
213745-39-2Potassium trifluoro(2-phenoxyphenyl)boranuideC₁₂H₉BF₃KO276.11
213745-86-92-Desamino-2-methylamino trimethoprimC₁₅H₂₀N₄O₃304.35
2137450-21-44-Methoxy-2,3-dihydro-1H-indole-2-carboxylic acid hydrochlorideC₁₀H₁₂ClNO₃229.66
2137451-00-2Methyl 2-oxa-5-azabicyclo[2.2.1]heptane-4-carboxylate hydrochlorideC₇H₁₂ClNO₃193.63
2137451-44-42-Amino-2-(2,4-dimethoxyphenyl)acetic acid hydrochlorideC₁₀H₁₄ClNO₄247.68
2137451-89-71-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-4,4-dimethylpiperidine-2-carboxylic acidC₂₃H₂₅NO₄379.46
2137457-31-72-(((9H-Fluoren-9-yl)methoxy)carbonyl)-2-azaspiro(3.3)heptane-1-carboxylic acidC₂₂H₂₁NO₄363.41
2137457-61-33-(5,6-Difluoro-1H-1,3-benzodiazol-1-yl)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)propanoic acidC₂₅H₁₉F₂N₃O₄463.44
2137457-79-32-(Ethylamino)-N-methylpropanamide hydrochlorideC₆H₁₅ClN₂O166.65
2137457-93-12-(2-Bromo-1,3-thiazol-4-yl)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetic acidC₂₀H₁₅BrN₂O₄S459.32
2137458-63-82-(4-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperazin-1-yl)pentanoic acidC₂₄H₂₈N₂O₄408.50
2137458-83-2Methyl 2-(ethylamino)butanoate hydrochlorideC₇H₁₆ClNO₂181.66
2137458-84-3Ethyl 2-amino-2-(4-bromo-3-chlorophenyl)acetate hydrochlorideC₁₀H₁₂BrCl₂NO₂329.02
2137462-24-71-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-3,3-dimethylazetidine-2-carboxylic acidC₂₁H₂₁NO₄351.40
2137462-36-12-Amino-3-(3-methyl-3H-diazirin-3-yl)propanoic acid hydrochlorideC₅H₁₀ClN₃O₂179.61
2137462-58-72-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxy-4-phenylbutanoic acidC₂₅H₂₃NO₅417.46
2137462-64-52-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-(1-(trifluoromethyl)cyclopropyl)acetic acidC₂₁H₁₈F₃NO₄405.37
2137469-74-82-[4-(3-Bromophenoxy)phenyl]-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetic acidC₂₉H₂₂BrNO₅544.40
2137469-78-22-(2-Bromo-6-methylphenyl)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetic acidC₂₄H₂₀BrNO₄466.33
213747-65-02-Chloro-4-[(4-methylphenyl)sulfanyl]pyrimidineC₁₁H₉ClN₂S236.73
2137470-25-62-Oxa-7-azaspiro[3.4]octane-6-carboxylic acidC₇H₁₁NO₃157.17
2137470-37-01-(((9H-Fluoren-9-yl)methoxy)carbonyl)-4-methyl-5-oxopiperazine-2-carboxylic acidC₂₁H₂₀N₂O₅380.40
2137470-54-17-Bromo-1-[(tert-butoxy)carbonyl]-4-methoxy-2,3-dihydro-1H-indole-2-carboxylic acidC₁₅H₁₈BrNO₅372.21
2137472-07-02-[5-(4-Bromophenyl)thiophen-2-yl]-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetic acidC₂₇H₂₀BrNO₄S534.43
2137472-97-83-[3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-2-oxopyrrolidin-1-yl]propanoic acidC₂₂H₂₂N₂O₅394.43
2137473-22-2Methyl 2-amino-1-hydroxycyclopentane-1-carboxylate, oxalic acidC₉H₁₅NO₇249.22
2137473-26-62-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-iodo-1H-pyrazol-1-yl)propanoic acidC₂₁H₁₈IN₃O₄503.30

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