CAS number index

CAS numbers starting with 21, page 24

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

Showing 2,301 to 2,400 of 8,045 chemicals

CAS numberChemical nameFormulaMol. weight

2137476-62-92-(Dimethylamino)-2-(1,3-thiazol-4-yl)acetic acid hydrochlorideC₇H₁₁ClN₂O₂S222.70
2137477-43-91,7-Dioxaspiro(4.4)nonan-4-amineC₇H₁₃NO₂143.19
213748-09-53-(2,3-Dihydro-1,4-benzodioxin-6-yl)-1-phenyl-1H-pyrazole-4-carbaldehydeC₁₈H₁₄N₂O₃306.32
2137481-21-9Methyl 2-amino-2-(5-bromothiophen-3-yl)acetate hydrochlorideC₇H₉BrClNO₂S286.58
2137481-84-4tert-Butyl 3-amino-4-hydroxyoxane-4-carboxylateC₁₀H₁₉NO₄217.26
2137484-34-31,4-Dioxa-9-azaspiro[5.6]dodecan-10-oneC₉H₁₅NO₃185.22
2137488-99-24-(Dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid hydrochlorideC₂₁H₂₅ClN₂O₄404.89
213749-91-82-(2-Ethylhexyloxy)-5-methoxy-1,4-benzenediacetonitrileC₁₉H₂₆N₂O₂314.43
2137493-38-83-(2,4-Dioxo-1,2,3,4-tetrahydropyrimidin-1-yl)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)propanoic acidC₂₂H₁₉N₃O₆421.41
2137493-39-9alpha-(2-Chlorophenyl)-4,7-dihydro-thieno(2,3-c)pyridine-6(5H)-acetic acid methyl ester, sulfateC₁₆H₁₈ClNO₆S₂419.91
2137493-56-07-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-3-oxo-2H,3H,5H,6H,7H,8H-[1,2,4]triazolo[4,3-a]piperazine-6-carboxylic acidC₂₁H₁₈N₄O₅406.40
2137493-73-12-(4-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-2-oxopiperazin-1-yl)propanoic acidC₂₂H₂₂N₂O₅394.43
2137494-02-92-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-2-(2-fluoro-5-iodophenyl)acetic acidC₂₃H₁₇FINO₄517.29
2137501-14-37-(Tetramethyl-1,3,2-dioxaborolan-2-yl)-1,3-benzoxazoleC₁₃H₁₆BNO₃245.09
2137503-11-62-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-7-oxa-2-azaspiro[3.5]nonane-1-carboxylic acidC₂₃H₂₃NO₅393.44
2137503-65-02-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-(3-fluoro-4-iodophenyl)acetic acidC₂₃H₁₇FINO₄517.29
2137505-54-3Methyl 2-amino-3-(1H-1,2,4-triazol-1-yl)propanoate dihydrochlorideC₆H₁₂Cl₂N₄O₂243.09
2137505-57-6Methyl 1,2,3,4-tetrahydro-1,6-naphthyridine-2-carboxylate hydrochlorideC₁₀H₁₃ClN₂O₂228.68
2137506-01-32-Amino-3-(pyridazin-4-yl)propanoic acid hydrochlorideC₇H₁₀ClN₃O₂203.63
2137506-61-54-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-1-methylpiperazine-2-carboxylic acidC₂₁H₂₂N₂O₄366.42
2137510-85-92-Amino-2-(1-methyl-1H-pyrazol-3-yl)acetic acid hydrochlorideC₆H₁₀ClN₃O₂191.62
2137513-06-32-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-2-(1-methyl-1H-pyrazol-3-yl)acetic acidC₂₁H₁₉N₃O₄377.40
2137513-13-25-(((9H-Fluoren-9-yl)methoxy)carbonyl)-4H,5H,6H,7H-furo(3,2-c)pyridine-4-carboxylic acidC₂₃H₁₉NO₅389.41
2137514-33-94-(((9H-Fluoren-9-yl)methoxy)carbonyl)-2,3,4,5-tetrahydro-1,4-benzoxazepine-5-carboxylic acidC₂₅H₂₁NO₅415.44
2137514-64-6Potassium 2-(dimethylamino)pent-4-enoateC₇H₁₂KNO₂181.28
2137515-92-3(3-Ethoxyoxan-3-yl)methanolC₈H₁₆O₃160.21
2137515-95-66-[(tert-Butoxy)carbonyl]-5H,6H,7H-pyrrolo[3,4-d]pyrimidine-5-carboxylic acidC₁₂H₁₅N₃O₄265.27
2137517-18-92-(4-Chloro-3-methylphenyl)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetic acidC₂₄H₂₀ClNO₄421.88
2137518-78-4Sodium (1-((tert-butoxy)carbonyl)azetidin-3-yl)methanesulfinateC₉H₁₆NNaO₄S257.29
2137519-48-14-(Difluoromethyl)-3-iodo-1-methyl-1H-pyrazoleC₅H₅F₂IN₂258.01
2137530-32-4Lithium(1+) 2-(6-methoxypyridin-2-yl)acetateC₈H₈LiNO₃173.10
2137530-34-6tert-Butyl N-{1-oxa-4-azaspiro[5.5]undecan-9-yl}carbamateC₁₄H₂₆N₂O₃270.37
2137530-82-4Sodium 4-methyl-1,3-oxazole-2-carboxylateC₅H₄NNaO₃149.08
2137530-88-03-Amino-1-(3-(trifluoromethyl)-5H,6H,7H,8H-(1,2,4)triazolo(4,3-a)pyrazin-7-yl)-4-(2,4,5-trifluorophenyl)butan-1-one, acetic acidC₁₈H₁₉F₆N₅O₃467.37
2137531-31-64-(Bromomethyl)-2-(difluoromethyl)-1,3-oxazoleC₅H₄BrF₂NO211.99
2137533-39-09-Hydroxy-7-azaspiro(3.5)nonan-6-oneC₈H₁₃NO₂155.20
2137536-57-1rac-(3aR,7aS)-1-((tert-butoxy)carbonyl)-octahydro-1H-indole-3a-carboxylic acidC₁₄H₂₃NO₄269.34
2137537-83-66-Ethoxy-2,3-dihydro-1-benzofuran-3-carboxylic acidC₁₁H₁₂O₄208.21
2137539-14-94-[2-(1H-Pyrazol-4-yl)ethynyl]benzaldehyde hydrochlorideC₁₂H₉ClN₂O232.67
2137539-17-2rac-5-[(3R,4R)-4-Cyclopropylpyrrolidin-3-yl]-3-methyl-1H-1,2,4-triazole dihydrochlorideC₁₀H₁₈Cl₂N₄265.19
2137539-20-7(1-Methyl-1H-pyrazol-3-yl)methanesulfonyl fluorideC₅H₇FN₂O₂S178.19
2137539-38-7Acetic acid, tert-butyl 3-carbamimidoylpyrrolidine-1-carboxylateC₁₂H₂₃N₃O₄273.33
2137539-84-33-Amino-1-((1,4-dimethyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-3-yl)methyl)azepan-2-one hydrochlorideC₁₁H₂₀ClN₅O₂289.77
2137541-90-12-(1-Ethyl-1H-1,2,3-triazol-4-yl)acetic acid hydrochlorideC₆H₁₀ClN₃O₂191.62
2137543-26-9tert-Butyl 2-oxo-6-azabicyclo[3.2.1]octane-6-carboxylateC₁₂H₁₉NO₃225.29
2137543-68-9tert-Butyl 3-((chlorosulfonyl)methyl)-2-oxa-8-azaspiro(4.5)decane-8-carboxylateC₁₄H₂₄ClNO₅S353.87
2137544-92-2rac-(1R,2R)-1-Methyl-2-(trifluoromethyl)cyclopropane-1-carboxylic acidC₆H₇F₃O₂168.11
2137545-73-22-(Difluoromethyl)-2H-1,2,3-triazoleC₃H₃F₂N₃119.07
2137546-39-33-(1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidin-4-yl)-3-(4-fluorophenyl)propanoic acidC₂₉H₂₈FNO₄473.54
2137547-37-42-(3-(Aminooxy)azetidin-3-yl)acetic acid dihydrochlorideC₅H₁₂Cl₂N₂O₃219.07
2137547-80-7Benzyl 3a-[(chlorosulfonyl)methyl]-octahydro-1H-indole-1-carboxylateC₁₇H₂₂ClNO₄S371.89
2137548-06-04-Azido-1-oxa-9-azaspiro(5.5)undecane hydrochlorideC₉H₁₇ClN₄O232.72
2137548-37-75-(Fluorosulfonyl)furan-2-carboxylic acidC₅H₃FO₅S194.14
2137548-54-8rac-(1R,2S)-2-Methoxycycloheptane-1-sulfonyl chlorideC₈H₁₅ClO₃S226.72
2137548-71-95-Oxaspiro[3.4]octane-8-carboxylic acidC₈H₁₂O₃156.18
2137549-20-11-Cyclopropyl-N-methyl-1-phenylmethanesulfonamideC₁₁H₁₅NO₂S225.31
2137550-38-84-(Chloromethyl)-3-(propan-2-yl)-1,2-oxazoleC₇H₁₀ClNO159.62
2137550-39-96-(((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)methyl)-2-methylpyridine-3-carboxylic acidC₂₃H₂₀N₂O₄388.42
2137550-53-7rac-(2R,3S)-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolane-3-carboxylic acidC₂₁H₂₁NO₅367.40
2137552-41-9Methyl 3-(4-methyl-1,3-oxazol-5-yl)prop-2-ynoateC₈H₇NO₃165.15
2137554-75-54-Bromo-2-cyclopropylbenzaldehydeC₁₀H₉BrO225.09
2137557-91-41-(Oxolan-2-yl)cyclopentane-1-carboxylic acidC₁₀H₁₆O₃184.24
2137558-21-34-(Chloromethyl)-3-fluoro-2-(4-methanesulfonyl-1H-pyrazol-1-yl)pyridineC₁₀H₉ClFN₃O₂S289.72
2137559-54-53-(Chloromethyl)-4-methylbenzene-1-sulfonyl fluorideC₈H₈ClFO₂S222.67
2137560-12-21-(2-Hydroxyethyl)-1H-pyrazole-4-carboxylic acid hydrochlorideC₆H₉ClN₂O₃192.60
2137561-27-24-(2-(4-Chlorophenyl)-1,3-thiazol-4-yl)piperidineC₁₄H₁₅ClN₂S278.81
2137562-31-1Methyl 5-(chlorosulfonyl)-2-(trifluoromethoxy)benzoateC₉H₆ClF₃O₅S318.66
2137564-30-62-(Cyclopropylmethyl)-2H-1,2,3-triazol-4-amineC₆H₁₀N₄138.17
2137565-61-64-((tert-Butoxy)carbonyl)-2,3,4,5-tetrahydro-1,4-benzoxazepine-6-carboxylic acidC₁₅H₁₉NO₅293.32
2137566-97-1Methyl 2-amino-3-(4-methyl-1H-pyrazol-1-yl)propanoate dihydrochlorideC₈H₁₅Cl₂N₃O₂256.13
2137567-19-06-(((9H-Fluoren-9-yl)methoxy)carbonyl)-8-fluoro-6-azaspiro(3.4)octane-8-carboxylic acidC₂₃H₂₂FNO₄395.43
2137567-23-62-{3-[({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)methyl]phenyl}-1,3-thiazole-4-carboxylic acidC₂₆H₂₀N₂O₄S456.52
2137567-26-95-Oxa-2,7-diazaspiro[3.5]nonan-6-oneC₆H₁₀N₂O₂142.16
2137568-32-04H,5H,6H,7H-Pyrazolo[1,5-a]pyrazine-3-carboxylic acid dihydrochlorideC₇H₁₁Cl₂N₃O₂240.09
2137568-38-61-(3-(Aminomethyl)phenyl)-5-methyl-2,3-dihydro-1H-imidazol-2-one hydrochlorideC₁₁H₁₄ClN₃O239.71
2137568-66-0(2S,3R)-4-Methyl-3-(2-methylpyrazol-3-yl)-5-oxomorpholine-2-carboxylic acidC₁₀H₁₃N₃O₄239.23
2137568-86-4rac-(3aR,6aS)-1-(((9H-fluoren-9-yl)methoxy)carbonyl)-octahydrocyclopenta(b)pyrrole-3a-carboxylic acidC₂₃H₂₃NO₄377.44
2137568-93-3rac-(3aR,6aR)-5-{[(9H-fluoren-9-yl)methoxy]carbonyl}-hexahydro-1H-furo[3,4-c]pyrrole-3a-carboxylic acidC₂₂H₂₁NO₅379.41
2137569-55-07-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-5,6,7,8-tetrahydro-1,7-naphthyridine-2-carboxylic acidC₂₄H₂₀N₂O₄400.43
2137569-56-12-(5-(Fluorosulfonyl)-2-methoxyphenyl)acetic acidC₉H₉FO₅S248.23
2137570-78-42-(1-Aminocyclopentyl)-5-methoxy-3,4-dihydropyrimidin-4-one hydrochlorideC₁₀H₁₆ClN₃O₂245.71
2137570-79-52-Ethyloxolane-2-carbaldehydeC₇H₁₂O₂128.17
2137572-07-55-Methanesulfonyl-2-oxo-1,2-dihydropyridine-3-carboxylic acidC₇H₇NO₅S217.20
2137572-11-1tert-Butyl 3-(hydroxymethyl)-3-methylpiperazine-1-carboxylateC₁₁H₂₂N₂O₃230.31
2137572-21-35-Chloro-2,7-bis(trifluoromethyl)-[1,2,4]triazolo[1,5-a]pyridineC₈H₂ClF₆N₃289.57
2137573-45-4Methyl 8-amino-5-thiaspiro(3.5)nonane-2-carboxylate hydrochlorideC₁₀H₁₈ClNO₂S251.78
2137573-49-85,5-Dimethyloxolan-3-amine hydrochlorideC₆H₁₄ClNO151.64
2137573-51-2tert-Butyl 4-(chlorosulfonyl)-1H-indole-1-carboxylateC₁₃H₁₄ClNO₄S315.78
2137573-54-54-[4-(Bromomethyl)phenyl]morpholine hydrobromideC₁₁H₁₅Br₂NO337.06
2137574-46-8[1-(Aminomethyl)-2-oxabicyclo[2.1.1]hexan-4-yl]methanolC₇H₁₃NO₂143.19
2137575-03-03-(4-Amino-1H-pyrazol-1-yl)pyrrolidin-2-oneC₇H₁₀N₄O166.18
2137575-11-02-(1-Methyl-1H-pyrazol-3-yl)oxolane-2-carboxylic acidC₉H₁₂N₂O₃196.21
2137575-41-6tert-Butyl N-(3-(2-oxoethyl)oxetan-3-yl)carbamateC₁₀H₁₇NO₄215.25
2137575-50-71-Bromo-6-oxaspiro(2.5)octaneC₇H₁₁BrO191.07
2137576-54-43-Amino-1-[(tert-butoxy)carbonyl]azetidine-3-carboxylic acid, trifluoroacetic acidC₁₁H₁₇F₃N₂O₆330.26
2137577-32-1rac-(1R,2S)-2-(Difluoromethyl)cyclopropane-1-carbaldehydeC₅H₆F₂O120.10
2137577-55-84-(Bromomethyl)-2-(trifluoromethyl)-1,3-oxazoleC₅H₃BrF₃NO229.98
2137577-63-84-Ethynyltetrahydro-2H-thiopyran 1,1-dioxideC₇H₁₀O₂S158.22
2137577-93-48-Fluoro-6-azaspiro[3.4]octane-8-carboxylic acid hydrochlorideC₈H₁₃ClFNO₂209.65
2137578-21-11-Ethyl-1H-imidazol-4-amine hydrochlorideC₅H₁₀ClN₃147.61

All pages for 21 (81 pages)Show all

Every CAS number here is checked for a valid check digit. Confirm it with the supplier before you order. CAS Registry Number is a registered trademark of the American Chemical Society.