CAS number index

CAS numbers starting with 21, page 34

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

Showing 3,301 to 3,400 of 8,045 chemicals

CAS numberChemical nameFormulaMol. weight

2138278-39-21-(Methoxymethyl)cyclobutane-1-sulfonyl chlorideC₆H₁₁ClO₃S198.67
2138278-63-22-[3-(Methoxycarbonyl)-2-oxopiperidin-1-yl]acetic acidC₉H₁₃NO₅215.21
2138278-81-4rac-(1R,5S)-5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohex-3-ene-1-carboxylic acidC₂₂H₂₁NO₄363.41
2138278-93-8tert-Butyl 1-aminocyclohexane-1-carboxylate hydrochlorideC₁₁H₂₂ClNO₂235.75
2138279-02-2[2-(1-Methyl-1H-pyrazol-4-yl)oxolan-2-yl]methanamineC₉H₁₅N₃O181.24
2138279-25-9Sodium 1-((tert-butoxy)carbonyl)pyrrolidine-3-sulfinateC₉H₁₆NNaO₄S257.29
2138280-09-61-(2-Bromoethyl)-4,4-difluoropiperidine hydrobromideC₇H₁₃Br₂F₂N308.99
2138280-26-7Lithium(1+) ion 1,3,4-thiadiazole-2-carboxylateC₃HLiN₂O₂S136.06
2138280-47-23,4-Dihydrospiro[1,4-benzoxazine-2,1'-cyclopropane] hydrochlorideC₁₀H₁₂ClNO197.66
2138284-53-21,3-Dimethyl-1H,4H,5H,6H,7H-pyrazolo(3,4-b)pyridin-5-amine dihydrochlorideC₈H₁₆Cl₂N₄239.15
2138285-63-75,5-Difluoro-2-methyl-4,5,6,7-tetrahydro-2H-indazol-3-amineC₈H₁₁F₂N₃187.19
2138286-72-13-(3,4-Dichlorophenyl)-2H,6aH-4lambda6-thieno(2,3-d)(1,2)oxazole-4,4-dioneC₁₁H₇Cl₂NO₃S304.15
2138286-81-23-Ethynylbenzene-1-sulfonyl fluorideC₈H₅FO₂S184.19
2138287-10-03-(Chloromethyl)-4-fluoropyridine hydrochlorideC₆H₆Cl₂FN182.03
2138287-68-81-Cyclopropanecarbonylpiperazine dihydrochlorideC₈H₁₆Cl₂N₂O227.13
2138287-73-54-((tert-Butoxy)carbonyl)-1,1-dioxo-1lambda6-thiomorpholine-2-carboxylic acidC₁₀H₁₇NO₆S279.31
2138288-25-0Ethyl (1R,2R)-2-(chlorosulfonylmethyl)cyclopropane-1-carboxylateC₇H₁₁ClO₄S226.68
2138288-27-2N-tert-Butyl-1-(oxiran-2-yl)cyclobutane-1-sulfonamideC₁₀H₁₉NO₃S233.33
2138288-33-0tert-Butyl 3-[(morpholin-3-yl)methyl]-2,3-dihydro-1H-indole-1-carboxylateC₁₈H₂₆N₂O₃318.42
2138288-40-9Sodium 3-(1-methylpiperidin-4-yl)-1H-1,2,4-triazole-5-carboxylateC₉H₁₃N₄NaO₂232.22
2138288-43-22-(2-Chloroethyl)-1,4,5,6-tetrahydropyrimidine hydrochlorideC₆H₁₂Cl₂N₂183.08
2138289-88-84-Amino-3-(1H-indol-3-yl)butanoic acid hydrochlorideC₁₂H₁₅ClN₂O₂254.72
2138289-91-34-Amino-3-(4-(methoxymethyl)phenyl)butanoic acid hydrochlorideC₁₂H₁₈ClNO₃259.73
2138290-76-12-(Aminomethyl)-6-chlorophenol hydrochlorideC₇H₉Cl₂NO194.06
2138290-87-4(1,2,5-Oxadiazol-3-yl)methanamine hydrobromideC₃H₆BrN₃O180.00
2138290-93-2Methyl 2-(2-aminoethyl)-1-benzofuran-6-carboxylate hydrochlorideC₁₂H₁₄ClNO₃255.70
2138291-46-88,8,8-Trifluorooctan-1-amineC₈H₁₆F₃N183.22
2138293-79-33-Iodo-7-methylimidazo[1,2-a]pyridine-6-carboxylic acidC₉H₇IN₂O₂302.07
2138297-98-82-[1-(Bromomethyl)cyclopropyl]oxolaneC₈H₁₃BrO205.09
21383-22-23-Hydrazinyl-1,2,4-triazin-5-olC₃H₅N₅O127.11
21383-24-43-Hydrazino-5,6-diphenyl-1,2,4-triazineC₁₅H₁₃N₅263.30
2138304-17-16-({[(Benzyloxy)carbonyl]amino}methyl)pyridine-3-carboxylic acidC₁₅H₁₄N₂O₄286.29
2138304-87-52-Methoxy-N-methyl-1-phenylethane-1-sulfonamideC₁₀H₁₅NO₃S229.30
2138307-82-94-(Fluorosulfonyl)-3-nitrobenzoic acidC₇H₄FNO₆S249.18
2138308-03-7Benzyl N-(1-imino-1-oxo-1lambda6-thian-4-yl)-N-methylcarbamateC₁₄H₂₀N₂O₃S296.39
213831-01-7N-(3-Amino-4-chlorophenyl)propanamideC₉H₁₁ClN₂O198.65
2138311-59-66-Chloro-5-methoxypyridine-3-sulfonyl fluorideC₆H₅ClFNO₃S225.63
2138311-60-9rac-5-[(1R,4R)-2-Oxa-5-azabicyclo[2.2.1]heptan-5-yl]pyridine-2-carbaldehydeC₁₁H₁₂N₂O₂204.23
2138311-80-3Lithium(1+) ion 3-tert-butyl-1,2,4-oxadiazole-5-carboxylateC₇H₉LiN₂O₃176.10
2138312-89-53-Cyanocyclopentane-1-sulfonyl fluorideC₆H₈FNO₂S177.20
2138331-77-62-[(1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}piperidin-4-yl)methyl]-1,3-thiazole-4-carboxylic acidC₂₅H₂₄N₂O₄S448.54
2138332-65-53-Cyanobicyclo[3.2.1]octane-3-carboxylic acidC₁₀H₁₃NO₂179.22
2138332-78-0(2,1,3-Benzoxadiazol-5-yl)methanesulfonyl chlorideC₇H₅ClN₂O₃S232.65
2138332-93-9rac-(1R,5S)-3-((tert-Butoxy)carbonyl)-3-azabicyclo(3.1.0)hexane-1-carboxylic acidC₁₁H₁₇NO₄227.26
2138334-56-04-Ethenylthiophene-2-carboxylic acidC₇H₆O₂S154.19
2138335-79-02,6-Difluoro-3-(hydroxymethyl)benzoic acidC₈H₆F₂O₃188.13
2138337-19-41-(Pyrimidin-2-yl)ethan-1-amine dihydrochlorideC₆H₁₁Cl₂N₃196.08
2138337-54-7rac-(3R,5S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)-5-(trifluoromethyl)piperidine-3-carboxylic acidC₂₂H₂₀F₃NO₄419.40
2138337-86-54-(1,4-Dioxan-2-yl)piperidine hydrochlorideC₉H₁₈ClNO₂207.70
2138341-93-0rac-2-((2R,6S)-4-((tert-Butoxy)carbonyl)-6-(hydroxymethyl)morpholin-2-yl)acetic acidC₁₂H₂₁NO₆275.30
2138342-24-09H-Fluorene-2-sulfonyl fluorideC₁₃H₉FO₂S248.28
2138342-82-03-(Spiro(2.2)pentan-1-yl)prop-2-ynoic acidC₈H₈O₂136.15
2138345-83-05-(Fluorosulfonyl)pyridine-3-carboxylic acidC₆H₄FNO₄S205.17
2138347-99-43'-Oxaspiro(azetidine-3,2'-bicyclo(3.1.0)hexane) hydrochlorideC₇H₁₂ClNO161.63
2138348-56-6Ethyl 2-amino-5-chloro-4-(trifluoromethyl)thiophene-3-carboxylateC₈H₇ClF₃NO₂S273.66
2138348-76-07,7-Dimethyl-1H,4H,5H,6H,7H,8H-imidazo[4,5-c]azepin-4-oneC₉H₁₃N₃O179.22
2138348-83-9tert-Butyl 4-carbamimidoylpiperidine-1-carboxylate dihydrochlorideC₁₁H₂₃Cl₂N₃O₂300.23
2138348-91-96-[(tert-Butoxy)carbonyl]-2-hydroxy-5,6,7,8-tetrahydro-1,6-naphthyridine-4-carboxylic acidC₁₄H₁₈N₂O₅294.31
2138351-52-5Trimethylthiophene-3-sulfonyl fluorideC₇H₉FO₂S₂208.28
2138351-94-52-Fluoro-3-methoxypyridin-4-amine hydrochlorideC₆H₈ClFN₂O178.59
2138353-64-52-(Bromomethyl)-1-ethyl-1H-imidazole hydrobromideC₆H₁₀Br₂N₂269.97
2138353-85-04,4-Difluoro-3-(1H-imidazol-1-yl)butanoic acidC₇H₈F₂N₂O₂190.15
2138357-77-26-(3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)azetidin-1-yl)pyridine-3-carboxylic acidC₂₄H₂₁N₃O₄415.45
2138358-96-83-(2-Oxo-1,3-oxazolidin-3-yl)propane-1-sulfonamideC₆H₁₂N₂O₄S208.24
2138361-00-75-(1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidin-4-yl)-1,3-oxazole-4-carboxylic acidC₂₄H₂₂N₂O₅418.45
2138361-04-1rac-(3aR,8aR)-octahydro-2H-cyclohepta(b)furan-3a-carboxylic acidC₁₀H₁₆O₃184.24
2138361-09-61-Methyl-2-oxabicyclo[2.2.2]octane-4-carboxylic acidC₉H₁₄O₃170.21
2138364-29-91,3-Dicyclobutylpropane-1,3-dioneC₁₁H₁₆O₂180.25
2138365-58-7rac-(1R,2S)-2-(1-{[(9H-fluoren-9-yl)methoxy]carbonyl}piperidin-4-yl)cyclopropane-1-carboxylic acidC₂₄H₂₅NO₄391.47
2138365-72-55-(5-Cyclobutyl-1,2,4-oxadiazol-3-yl)pyridine-3-carbaldehydeC₁₂H₁₁N₃O₂229.24
2138366-11-5(5-Chloro-1-methyl-1H-pyrazol-3-yl)methanesulfonamideC₅H₈ClN₃O₂S209.66
2138366-44-45-(4-{[(9H-Fluoren-9-yl)methoxy]carbonyl}piperazin-1-yl)thiophene-2-carboxylic acidC₂₄H₂₂N₂O₄S434.52
2138366-89-71-(((9H-Fluoren-9-yl)methoxy)carbonyl)-4-(2,2,2-trifluoroethoxy)piperidine-4-carboxylic acidC₂₃H₂₂F₃NO₅449.43
2138367-28-72-(1-Methylazetidin-3-yl)ethan-1-amine dihydrochlorideC₆H₁₆Cl₂N₂187.11
2138369-53-4tert-Butyl N-[(6-aminopyridazin-3-yl)methyl]carbamateC₁₀H₁₆N₄O₂224.26
2138370-15-5tert-Butyl N-{[4-(aminomethyl)-5-methyl-1,3-thiazol-2-yl]methyl}carbamateC₁₁H₁₉N₃O₂S257.36
2138370-38-22-Fluoro-5-(3-methyl-1H-pyrazol-4-yl)benzoic acidC₁₁H₉FN₂O₂220.20
2138371-15-84-Chloro-1,3-dimethyl-1H-pyrazolo(3,4-b)pyridin-6-olC₈H₈ClN₃O197.63
2138371-99-81-(((9H-Fluoren-9-yl)methoxy)carbonyl)-3-phenylpyrrolidine-3-carboxylic acidC₂₆H₂₃NO₄413.47
2138372-36-62-(2-(Difluoromethyl)pyridin-4-yl)phenolC₁₂H₉F₂NO221.21
2138372-68-41-(4-Cyclopropyl-1,2,3-thiadiazol-5-yl)ethan-1-oneC₇H₈N₂OS168.22
2138374-29-32-(1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}piperidin-4-yl)-2-hydroxyacetic acidC₂₂H₂₃NO₅381.43
2138377-03-22-{6-Methyl-1H-pyrrolo[2,3-b]pyridin-3-yl}ethan-1-amine hydrochlorideC₁₀H₁₄ClN₃211.70
2138377-87-2Methyl 6-aminopyridine-2-carboxylate hydrochlorideC₇H₉ClN₂O₂188.61
2138379-11-82-Ethyl-1H-imidazole-4-carboxylic acid hydrochlorideC₆H₉ClN₂O₂176.60
2138379-43-64-(Oxetan-3-yloxy)piperidine hydrochlorideC₈H₁₆ClNO₂193.67
2138379-80-12-(2-Methyl-5-nitro-1H-imidazol-1-yl)acetyl chloride hydrochlorideC₆H₇Cl₂N₃O₃240.05
2138380-44-45-Chloro-7-methylbicyclo[4.2.0]octa-1,3,5-triene-7-carboxylic acidC₁₀H₉ClO₂196.63
2138384-20-8tert-Butyl N-(2-formylnaphthalen-1-yl)carbamateC₁₆H₁₇NO₃271.32
2138384-32-23-(Bromomethyl)-1-(2,2,2-trifluoroethyl)-1H-pyrazoleC₆H₆BrF₃N₂243.03
2138384-35-51-[4-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)butyl]-1H-1,2,3-triazole-4-carboxylic acidC₂₂H₂₂N₄O₄406.44
2138388-38-0(2S,5R)-2-(2-Chlorophenyl)-5-methylmorpholine, hydrochlorideC₁₁H₁₅Cl₂NO248.15
2138388-57-3rac-(2R,3S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)-2-(3-methoxyphenyl)pyrrolidine-3-carboxylic acidC₂₇H₂₅NO₅443.50
2138390-08-4tert-Butyl N-{5-oxospiro[2.3]hexan-1-yl}carbamateC₁₁H₁₇NO₃211.26
2138390-21-12-(1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-3-hydroxypiperidin-3-yl)acetic acidC₂₂H₂₃NO₅381.43
2138392-75-11-[3-(Aminomethyl)-3-fluoroazetidin-1-yl]-2-methylpropan-1-oneC₈H₁₅FN₂O174.22
2138393-63-03-Aminopyrrolidine-3-carboxylic acid dihydrochlorideC₅H₁₂Cl₂N₂O₂203.07
2138394-93-9tert-Butyl 3-amino-2-(oxan-4-yl)propanoateC₁₂H₂₃NO₃229.32
2138394-94-02-(5-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-1,1-dioxo-hexahydro-2H-1lambda6-thieno[2,3-c]pyrrol-3-yl)acetic acidC₂₃H₂₃NO₆S441.50
2138395-14-7tert-Butyl 3-(aminomethyl)oxetane-3-carboxylateC₉H₁₇NO₃187.24

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