CAS number index

CAS numbers starting with 21, page 53

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

Showing 5,201 to 5,300 of 8,045 chemicals

CAS numberChemical nameFormulaMol. weight

2166-32-76-(4-Methylphenyl)pyridazin-3-olC₁₁H₁₀N₂O186.21
2166-33-86-(4-Methoxyphenyl)-2,3-dihydropyridazin-3-oneC₁₁H₁₀N₂O₂202.21
2166-34-95,6-Diphenyl-3(2H)-pyridazinoneC₁₆H₁₂N₂O248.28
2166-87-2N-(1-Hydroxy-2-oxo-2-phenyl-ethyl)-benzamideC₁₅H₁₃NO₃255.27
21660-16-26,7,8,9-Tetrahydro-5H-carbazole-3-carboxylic acid ethyl esterC₁₅H₁₇NO₂243.31
21660-66-22-(3-Chlorophenyl)-2-methoxyacetic acidC₉H₉ClO₃200.62
2166006-41-1rac-(2R,6R)-1-[(tert-Butoxy)carbonyl]-6-methylpiperidine-2-carboxylic acidC₁₂H₂₁NO₄243.30
2166009-21-6(2S,6R)-4-((tert-Butoxy)carbonyl)-6-methylmorpholine-2-carboxylic acidC₁₁H₁₉NO₅245.28
2166027-15-02-(1-Bromoethyl)-1-fluoro-3-methylbenzeneC₉H₁₀BrF217.08
2166040-50-0(3S,4S)-4-Cyclopropylpyrrolidine-3-carboxylic acidC₈H₁₃NO₂155.20
2166081-67-8(1S,3R)-3-Methoxycyclopentane-1-carboxylic acidC₇H₁₂O₃144.17
2166085-24-9tert-Butyl 3-[(1S)-1-hydroxyethyl]azetidine-1-carboxylateC₁₀H₁₉NO₃201.27
2166088-18-0(3R)-3-(((tert-Butoxy)carbonyl)amino)-4-methoxybutanoic acidC₁₀H₁₉NO₅233.26
21661-97-27-Decenal, (7Z)-C₁₀H₁₈O154.25
2166164-92-5Oct-7-yn-1-amine hydrochlorideC₈H₁₆ClN161.68
2166170-18-7(1S,2R)-1-Fluoro-2-methylcyclopropane-1-carboxylic acidC₅H₇FO₂118.11
2166176-54-9(1R)-1-(3,5-Difluoropyridin-4-yl)ethan-1-olC₇H₇F₂NO159.13
2166194-03-02-((2R,4R)-1-((tert-Butoxy)carbonyl)-4-hydroxypyrrolidin-2-yl)acetic acidC₁₁H₁₉NO₅245.28
2166195-20-4rac-{[(3aR,6aS)-hexahydro-1H-furo[3,4-c]pyrrol-3a-yl]methyl}dimethylamineC₉H₁₈N₂O170.26
21662-09-94-Decenal, (4Z)-C₁₀H₁₈O154.25
21662-13-52,6-Dodecadienal, (2E,6Z)-C₁₂H₂₀O180.29
21662-16-82,4-Dodecadienal, (2E,4E)-C₁₂H₂₀O180.29
2166206-92-2tert-Butyl (3R,4S)-3-ethynyl-4-hydroxypyrrolidine-1-carboxylateC₁₁H₁₇NO₃211.26
2166232-54-6tert-Butyl (2R)-2-ethynyl-2-methylpyrrolidine-1-carboxylateC₁₂H₁₉NO₂209.29
2166240-53-3(2S,4S)-4-Cyclohexyl-2-(trifluoromethyl)pyrrolidineC₁₁H₁₈F₃N221.27
2166256-78-4rac-(1R,2R)-2-Methylcyclopropane-1-sulfonyl chlorideC₄H₇ClO₂S154.62
2166271-93-6rac-(3R,4S)-4-(Piperazin-1-yl)oxolan-3-olC₈H₁₆N₂O₂172.23
21663-51-42-IsothiocyanatoheptaneC₈H₁₅NS157.28
21663-56-93-(Isothiocyanatomethyl)heptaneC₉H₁₇NS171.31
21663-61-62,5-DichlorobenzonitrileC₇H₃Cl₂N172.01
21663-79-6O-(Prop-2-yn-1-yl)hydroxylamine hydrochlorideC₃H₆ClNO107.54
2166310-87-61-(Oxolane-2-carbonyl)-1,4-diazepane hydrochlorideC₁₀H₁₉ClN₂O₂234.73
2166387-65-9BI-3802C₂₄H₂₉ClN₆O₃484.99
21665-50-94-Morpholin-4-yl-N-phenyl-6-piperazin-1-yl-1,3,5-triazin-2-amineC₁₇H₂₃N₇O341.42
2166529-84-41-(1-(4-Bromo-1H-pyrazol-1-yl)cyclopropyl)ethan-1-oneC₈H₉BrN₂O229.08
216655-61-7RefChem:345748C₁₀H₁₆O152.24
2166561-62-06-Fluorobicyclo(3.1.0)hexane-6-carboxylic acidC₇H₉FO₂144.15
2166566-68-15-Chloro-3-iodo-1-benzothiopheneC₈H₄ClIS294.54
2166571-24-85-Bromoimidazo(2,1-b)(1,3)thiazole-2-carbaldehydeC₆H₃BrN₂OS231.07
216658-62-71-(Bromomethyl)-3-ethylbenzeneC₉H₁₁Br199.09
2166596-54-73-Chloro-5-iodothiophene-2-carboxylic acidC₅H₂ClIO₂S288.49
2166596-87-64,5-Dichloro-3-fluorothiophene-2-carboxylic acidC₅HCl₂FO₂S215.03
21666-38-6Hexane-d14C₆H₁₄100.26
21666-91-12-(4-Methylphenyl)cyclohexan-1-olC₁₃H₁₈O190.29
2166608-45-12-((4-(Aminomethyl)-2-fluorophenyl)methoxy)ethan-1-ol hydrochlorideC₁₀H₁₅ClFNO₂235.69
216661-54-06-(4-Methoxy-phenyl)-3-phenyl-pyrazolo[1,5-a]pyrimidineC₁₉H₁₅N₃O301.35
216661-57-36-(4-Methoxyphenyl)-3-(3-thienyl)-pyrazolo(1,5-a)pyrimidineC₁₇H₁₃N₃OS307.38
216661-58-46-(4-Methoxyphenyl)-3-pyridin-4-ylpyrazolo[1,5-a]pyrimidineC₁₈H₁₄N₄O302.34
2166611-73-84,4-Difluoro-2,6-dimethylpiperidineC₇H₁₃F₂N149.18
2166616-44-81-(4-Fluorophenyl)bicyclo[2.1.1]hexane-2-carboxylic acidC₁₃H₁₃FO₂220.24
2166616-75-5LY-3381916C₂₃H₂₅FN₂O₃396.46
2166634-98-44-tert-Butoxycarbonyl-1,4-oxazepane-5-carboxylic acidC₁₁H₁₉NO₅245.28
2166639-82-1tert-Butyl 3-bromo-4H,5H,6H,7H-pyrazolo[1,5-a]pyrimidine-4-carboxylateC₁₁H₁₆BrN₃O₂302.17
2166640-77-13-Thiabicyclo[3.1.0]hexane-1-carboxylic acidC₆H₈O₂S144.19
2166643-10-13,3-Difluorooxolane-2-carboxylic acidC₅H₆F₂O₃152.10
2166649-66-56-Fluoro-4-methylpyridine-3-sulfonyl chlorideC₆H₅ClFNO₂S209.63
216665-38-2AcetothiolutamideC₂₀H₁₈F₃N₃O₃S437.44
2166650-85-52-(Trifluoromethyl)spiro[3.3]heptane-2-carboxylic acidC₉H₁₁F₃O₂208.18
2166663-13-25-Methyl-6-(trifluoromethyl)pyridine-3-sulfonyl chlorideC₇H₅ClF₃NO₂S259.64
2166665-33-2tert-Butyl 6-formyl-2,3,4,5-tetrahydro-1H-azepine-1-carboxylateC₁₂H₁₉NO₃225.29
2166667-89-44-Oxo-1,4-dihydrocinnoline-7-carboxylic acid hydrochlorideC₉H₇ClN₂O₃226.62
216667-08-2Asb-14C₂₂H₄₆N₂O₄S434.69
2166672-03-15-Oxaspiro[2.5]octan-7-oneC₇H₁₀O₂126.16
2166674-58-2{2,2-Difluorospiro[2.3]hexan-1-yl}methanesulfonyl chlorideC₇H₉ClF₂O₂S230.66
2166686-76-4tert-Butyl 3-(morpholin-2-yl)azetidine-1-carboxylateC₁₂H₂₂N₂O₃242.32
2166690-12-43-(Fluoromethyl)cyclobutan-1-olC₅H₉FO104.12
2166694-28-4Methyl 5-chloro-4-(chloromethyl)thiophene-2-carboxylateC₇H₆Cl₂O₂S225.10
21667-10-71D-Myo-inositol 6-phosphateC₆H₁₃O₉P260.13
21667-60-73-(3-Methoxyphenyl)-3-oxopropanenitrileC₁₀H₉NO₂175.19
21667-61-83-(3-Fluorophenyl)-3-oxopropanenitrileC₉H₆FNO163.15
21667-62-93-(3-Chlorophenyl)-3-oxopropanenitrileC₉H₆ClNO179.61
21667-63-03-(2-Cyanoacetyl)benzonitrileC₁₀H₆N₂O170.17
21667-64-13-(3-Nitrophenyl)-3-oxopropanenitrileC₉H₆N₂O₃190.16
216670-47-24-(Pyrrolidin-1-yl)aniline hydrochlorideC₁₀H₁₅ClN₂198.70
2166700-55-45-Acetamido-4H-1,2,4-triazole-3-sulfonyl fluorideC₄H₅FN₄O₃S208.17
2166701-96-6(3,3-Dimethyloxolan-2-yl)methanesulfonyl chlorideC₇H₁₃ClO₃S212.70
2166702-15-21-(3-Cyclopropyl-1H-pyrazol-5-yl)piperazineC₁₀H₁₆N₄192.27
2166702-43-62-Fluorobicyclo[2.2.1]heptane-1-carboxylic acidC₈H₁₁FO₂158.17
2166709-34-62-(3,3-Difluorocyclobutyl)ethane-1-sulfonyl chlorideC₆H₉ClF₂O₂S218.65
2166717-48-02-Bromo-1-(oxepan-4-yl)ethan-1-oneC₈H₁₃BrO₂221.09
2166731-23-16-Formyl-1H,3H,4H-pyrrolo(2,1-c)(1,4)oxazine-8-carboxylic acidC₉H₉NO₄195.17
2166745-49-73-[(tert-Butoxy)carbonyl]-1-methylcyclobutane-1-carboxylic acidC₁₁H₁₈O₄214.26
2166747-38-02-(Ethoxycarbonyl)-5-methyl-1,3-thiazole-4-carboxylic acidC₈H₉NO₄S215.23
2166763-89-75-Bromo-1-methyl-4-oxo-1,4-dihydropyridine-3-carboxylic acidC₇H₆BrNO₃232.03
2166764-11-84-Bromo-6-(pyrimidin-2-yl)pyrimidineC₈H₅BrN₄237.06
2166779-81-1(2,2-Difluorospiro(2.3)hexan-1-yl)methanolC₇H₁₀F₂O148.15
2166780-56-75-Chloro-2-oxo-1,2,3,4-tetrahydroquinoline-6-sulfonyl chlorideC₉H₇Cl₂NO₃S280.13
2166785-52-82-{1-[(tert-Butoxy)carbonyl]-4-methylpiperidin-3-yl}acetic acidC₁₃H₂₃NO₄257.33
2166791-63-3Methyl 1-fluoro-3-oxocyclobutane-1-carboxylateC₆H₇FO₃146.12
2166793-56-0(2-Phenyloxolan-2-yl)methanesulfonyl chlorideC₁₁H₁₃ClO₃S260.74
2166798-25-8(2-Aminoethyl)(4-aminohexan-3-yl)amineC₈H₂₁N₃159.28
2166798-48-54-Ethynyl-1-(trifluoromethyl)-1H-pyrazoleC₆H₃F₃N₂160.10
21668-03-11-Dodecyl butanedioateC₁₆H₃₀O₄286.41
21668-77-91,3-Propanedisulfonic acidC₃H₈O₆S₂204.22
21668-81-51-Propanesulfonic acid, 3-[(aminoiminomethyl)thio]-C₄H₁₀N₂O₃S₂198.27
21668-90-6(~2~H_4_)Butane(~2~H_2_)dioic acidC₄H₆O₄124.12
2166803-75-21-(4-Fluorophenyl)bicyclo(2.1.1)hexane-5-carboxylic acidC₁₃H₁₃FO₂220.24
216681-74-21,3-Dioxo-2-(1-phenylethyl)isoindoline-5-carboxylic acidC₁₇H₁₃NO₄295.29
2166811-84-1tert-Butyl 2-(4-amino-2H-1,2,3-triazol-2-yl)acetateC₈H₁₄N₄O₂198.23
2166815-17-22-(2-Isothiocyanatoethoxy)acetic acidC₅H₇NO₃S161.18

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