CAS number index

CAS numbers starting with 51, page 13

3,648 chemicals have a CAS number that starts with 51. They are listed in CAS order.

Showing 1,201 to 1,300 of 3,648 chemicals

CAS numberChemical nameFormulaMol. weight

512818-12-11-[5-Hydroxy-3-methyl-5-(trifluoromethyl)-4H-pyrazol-1-yl]-2-(4-methoxyphenoxy)ethanoneC₁₄H₁₅F₃N₂O₄332.28
51282-49-6Methyl 5-chloro-2-nitrobenzoateC₈H₆ClNO₄215.59
51282-56-5Ethyl 5-chloro-2-nitrobenzoateC₉H₈ClNO₄229.62
51282-90-72-Hydroxy-5-methylbenzonitrileC₈H₇NO133.15
512822-18-3tert-Butyl 4-formyl-3-methylpiperidine-1-carboxylateC₁₂H₂₁NO₃227.30
512822-27-4N-Boc-9-azabicyclo[3.3.1]nonan-3-oneC₁₃H₂₁NO₃239.31
512822-34-39-Oxo-3-azabicyclo[3.3.1]nonane-3-carboxylic acid 1,1-dimethylethyl esterC₁₃H₂₁NO₃239.31
512822-50-3N-Boc-3-methyl-4-piperidinecarboxylic acidC₁₂H₂₁NO₄243.30
512822-95-62,5-Dimethyl-4-nitro-N-[4-(1-pyrazolylmethyl)phenyl]-3-pyrazolecarboxamideC₁₆H₁₆N₆O₃340.34
512823-01-71-Methyl-N-(2-methyl-4-oxo-6-propylthieno[2,3-d]pyrimidin-3-yl)-4-nitropyrazole-3-carboxamideC₁₅H₁₆N₆O₄S376.40
512823-03-92-(4-Chlorophenoxy)-2-methyl-N'-[(1,3,5-trimethyl-1H-pyrazol-4-yl)methylene]propanohydrazideC₁₇H₂₁ClN₄O₂348.83
512823-10-85-[(2,4-Dichlorophenoxy)methyl]-N-[3,5-dimethyl-1-[(2,3,4,5,6-pentafluorophenyl)methyl]-4-pyrazolyl]-2-furancarboxamideC₂₄H₁₆Cl₂F₅N₃O₃560.31
512823-12-0N-[(5-Chloro-1H-indol-2-yl)methyl]-1-methyl-4-nitropyrazole-3-carboxamideC₁₄H₁₂ClN₅O₃333.74
512823-15-3N-Cycloheptyl-3-{3-nitro-5-methyl-1H-pyrazol-1-yl}propanamideC₁₄H₂₂N₄O₃294.36
512823-27-71-[5-Hydroxy-3-methyl-5-(trifluoromethyl)-4H-pyrazol-1-yl]-2-(3-nitropyrazol-1-yl)ethanoneC₁₀H₁₀F₃N₅O₄321.21
512823-30-2N-[1-[(3-Fluorophenyl)methyl]-3,5-dimethylpyrazol-4-yl]-2,5-dimethyl-4-nitropyrazole-3-carboxamideC₁₈H₁₉FN₆O₃386.39
512823-31-33-({4-Nitro-1H-pyrazol-1-yl}methyl)-N-[1-(4-isopropylphenyl)propyl]benzamideC₂₃H₂₆N₄O₃406.49
512823-32-4N-[2-(Difluoromethoxy)phenyl]-N'-(2-furylmethyl)thioureaC₁₃H₁₂F₂N₂O₂S298.31
512823-37-91-(2-Chloro-6-fluorobenzyl)-3-nitro-1H-pyrazoleC₁₀H₇ClFN₃O₂255.64
512823-58-4[5-[(3,5-Dimethyl-4-nitro-1-pyrazolyl)methyl]-2-furanyl]-[5-hydroxy-3-methyl-5-(trifluoromethyl)-4H-pyrazol-1-yl]methanoneC₁₆H₁₆F₃N₅O₅415.33
512823-74-4N-[4-[(3,5-Dimethylpyrazol-1-yl)methyl]phenyl]-2,5-dimethyl-4-nitropyrazole-3-carboxamideC₁₈H₂₀N₆O₃368.40
512823-83-52-(4-Chlorophenoxy)-2-methyl-N'-[(3-phenyl-1H-pyrazol-4-yl)methylene]propanohydrazideC₂₀H₁₉ClN₄O₂382.85
512823-98-22-{[2-(4-Chlorophenyl)cyclopropyl]carbonyl}-N-(4-fluorophenyl)hydrazinecarbothioamideC₁₇H₁₅ClFN₃OS363.85
512824-14-5[3,5-Bis(difluoromethyl)-5-hydroxy-4H-pyrazol-1-yl]-(2-pyrrol-1-ylphenyl)methanoneC₁₆H₁₃F₄N₃O₂355.29
512824-36-1N'-[(1,3-Dimethyl-1H-pyrazol-4-yl)methylene]-9-hydroxy-9H-fluorene-9-carbohydrazideC₂₀H₁₈N₄O₂346.39
512824-50-9[5-[(3,5-Dimethylpyrazol-1-yl)methyl]furan-2-yl]-[5-hydroxy-3-methyl-5-(trifluoromethyl)-4H-pyrazol-1-yl]methanoneC₁₆H₁₇F₃N₄O₃370.33
512824-51-01-[3-(3,5-Dimethyl-4-nitropyrazol-1-yl)propanoylamino]-3-(3-methylphenyl)thioureaC₁₆H₂₀N₆O₃S376.44
512824-55-4N-(4-Chlorophenyl)-2-{[2-(4-methylphenyl)cyclopropyl]carbonyl}hydrazinecarbothioamideC₁₈H₁₈ClN₃OS359.88
512824-82-72-({3-Nitro-5-methyl-1H-pyrazol-1-yl}acetyl)-N-(4-methylphenyl)hydrazinecarbothioamideC₁₄H₁₆N₆O₃S348.39
512824-89-43-({4-Nitro-3,5-dimethyl-1H-pyrazol-1-yl}methyl)-N-[1-(4-isopropylphenyl)propyl]benzamideC₂₅H₃₀N₄O₃434.54
512825-06-84-(3-Chloro-4-fluorophenyl)-5-(2-p-tolylcyclopropyl)-4H-1,2,4-triazole-3-thiolC₁₈H₁₅ClFN₃S359.86
512825-24-0N-[4-(3,4-Dimethylphenyl)-5-methyl-1,3-thiazol-2-yl]-1-methyl-4-nitropyrazole-3-carboxamideC₁₇H₁₇N₅O₃S371.42
512825-25-1N-(1H-Indol-2-ylmethyl)-1-methyl-4-nitropyrazole-3-carboxamideC₁₄H₁₃N₅O₃299.29
512825-49-9N-[1-(4-tert-Butylphenyl)ethyl]-3-[(4-nitropyrazol-1-yl)methyl]benzamideC₂₃H₂₆N₄O₃406.49
512825-53-54-(3-Methylphenyl)-3-[2-(4-methylphenyl)cyclopropyl]-1H-1,2,4-triazole-5-thioneC₁₉H₁₉N₃S321.45
512825-81-92-(4-Chlorophenoxy)-N'-[(1,5-dimethyl-1H-pyrazol-4-yl)methylene]-2-methylpropanohydrazideC₁₆H₁₉ClN₄O₂334.81
512825-82-04-(3-Chlorophenyl)-3-[2-(3,5-dimethyl-4-nitropyrazol-1-yl)ethyl]-1H-1,2,4-triazole-5-thioneC₁₅H₁₅ClN₆O₂S378.85
512825-94-4Ethyl 5-cyclopropyl-7-(difluoromethyl)pyrazolo[1,5-a]pyrimidine-3-carboxylateC₁₃H₁₃F₂N₃O₂281.26
512826-10-7N-(3-Chloro-4-methoxyphenyl)-4-(difluoromethoxy)benzamideC₁₅H₁₂ClF₂NO₃327.71
512826-19-61-Methyl-N-[5-methyl-4-(4-methylphenyl)-1,3-thiazol-2-yl]-4-nitropyrazole-3-carboxamideC₁₆H₁₅N₅O₃S357.39
512826-34-5N-(3-Methylphenyl)-2-{[2-(4-methylphenyl)cyclopropyl]carbonyl}hydrazinecarbothioamideC₁₉H₂₁N₃OS339.46
512826-48-1[5-Hydroxy-3-methyl-5-(trifluoromethyl)-4H-pyrazol-1-yl]-[4-[(3-nitropyrazol-1-yl)methyl]phenyl]methanoneC₁₆H₁₄F₃N₅O₄397.31
512826-54-91-(4-Methoxyphenyl)-3-[[2-(5-methyl-3-nitropyrazol-1-yl)acetyl]amino]thioureaC₁₄H₁₆N₆O₄S364.39
512826-81-2(4-Bromo-2-methylpyrazol-3-yl)-pyrrolidin-1-ylmethanoneC₉H₁₂BrN₃O258.12
512826-90-31H-Pyrazole-5-carboxamide, N-cycloheptyl-1-methyl-4-nitro-C₁₂H₁₈N₄O₃266.30
512826-93-64-Chloro-N-cyclopentyl-1-methyl-1H-pyrazole-5-carboxamideC₁₀H₁₄ClN₃O227.69
512826-98-14-[(4-Bromo-1-methyl-1H-pyrazol-5-yl)carbonyl]morpholineC₉H₁₂BrN₃O₂274.12
512827-04-21-({4-Nitro-1-methyl-1H-pyrazol-3-yl}carbonyl)azepaneC₁₁H₁₆N₄O₃252.27
512827-06-4N-Cycloheptyl-4-nitro-1-methyl-1H-pyrazole-3-carboxamideC₁₂H₁₈N₄O₃266.30
512827-08-6N-Benzyl-4-chloro-1-methyl-N-pyridin-2-ylpyrazole-3-carboxamideC₁₇H₁₅ClN₄O326.79
512827-24-61-Methyl-4-nitro-N-(thiazol-2-yl)-1H-pyrazole-3-carboxamideC₈H₇N₅O₃S253.24
512827-32-64-Bromo-N-cycloheptyl-1-methyl-1H-pyrazole-5-carboxamideC₁₂H₁₈BrN₃O300.20
512827-52-04-Bromo-N-(2-ethoxyphenyl)-1-methyl-1H-pyrazole-5-carboxamideC₁₃H₁₄BrN₃O₂324.18
512827-63-31-Methyl-4-nitro-N-(thiazol-2-yl)-1H-pyrazole-5-carboxamideC₈H₇N₅O₃S253.24
512827-65-5(4-Bromo-2-methylpyrazol-3-yl)-(2,6-dimethylmorpholin-4-yl)methanoneC₁₁H₁₆BrN₃O₂302.17
512827-71-34-Bromo-N-cyclopentyl-1-methyl-1H-pyrazole-5-carboxamideC₁₀H₁₄BrN₃O272.15
51283-79-5Methylamine hydrogen cyanideC₂H₆N₂58.08
512837-95-52-{[1-(3-Methylphenyl)-2,5-dioxopyrrolidin-3-yl]sulfanyl}benzoic acidC₁₈H₁₅NO₄S341.39
512838-49-22-((1-(3-(Methoxycarbonyl)-4,5-dimethylthiophen-2-yl)-2,5-dioxopyrrolidin-3-yl)thio)benzoic acidC₁₉H₁₇NO₆S₂419.48
512839-34-8Ethyl 7-(2,5-dimethoxyphenyl)-5-phenyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylateC₂₂H₂₂N₄O₄406.44
512839-98-43-Methyl-N-[2-(4-morpholinyl)ethyl]-1-phenyl-5-thieno[2,3-c]pyrazolecarboxamideC₁₉H₂₂N₄O₂S370.48
51284-91-4(~13~C)FormamideCH₃NO46.03
51284-92-5Formamide-18OCH₃NO47.04
512840-45-8Benzyl 6-methyl-2-oxo-4-(4-(trifluoromethyl)phenyl)-1,2,3,4-tetrahydropyrimidine-5-carboxylateC₂₀H₁₇F₃N₂O₃390.36
51285-05-3N'-Hydroxy-2-pyrazinecarboximidamideC₅H₆N₄O138.13
51285-11-1N'-Hydroxypyrimidine-4-carboximidamideC₅H₆N₄O138.13
51285-13-3N'-HydroxycyclopropanecarboximidamideC₄H₈N₂O100.12
51285-26-8Pyridine-2-carboximidamide hydrochlorideC₆H₈ClN₃157.60
51285-58-63-(2-Methyl-propane-2-sulfonyl)-thiophene-2-carboxylic acidC₉H₁₂O₄S₂248.32
51287-57-15-(Benzoylamino)-N-(4-chlorophenyl)-3-methyl-4-isothiazolecarboxamideC₁₈H₁₄ClN₃O₂S371.85
51287-84-4Bis(dodecylthio)dimethylstannaneC₂₆H₅₆S₂Sn551.58
51288-37-0N-(4-Hydroxy-3-nitrophenyl)acetamideC₈H₈N₂O₄196.16
5129-23-73-Amino-4-ethylbenzoic acidC₉H₁₁NO₂165.19
5129-35-1n-Propyl pivalateC₈H₁₆O₂144.21
5129-54-4Methyl 8-methylnonanoateC₁₁H₂₂O₂186.29
5129-58-8Methyl 12-methyltridecanoateC₁₅H₃₀O₂242.40
5129-60-2Methyl 14-methylpentadecanoateC₁₇H₃₄O₂270.46
5129-61-3Methyl 16-methylheptadecanoateC₁₉H₃₈O₂298.51
5129-62-4Methyl 6-methyloctanoateC₁₀H₂₀O₂172.27
5129-66-8Methyl 12-methyltetradecanoateC₁₆H₃₂O₂256.43
5129-72-6N-EthylpropionamideC₅H₁₁NO101.15
51290-77-82-BenzylthiobenzimidazoleC₁₄H₁₂N₂S240.33
51290-78-94-BenzylsulfanylpyridineC₁₂H₁₁NS201.29
51290-79-02-BenzylsulfanylpyridineC₁₂H₁₁NS201.29
51291-11-35-Acetoacetyl-1,3-dimethyl-2,4,6(1H,3H,5H)-pyrimidinetrioneC₁₀H₁₂N₂O₅240.22
51291-26-0N-Methyl-2-(phenylacetyl)hydrazinecarbothioamideC₁₀H₁₃N₃OS223.30
51291-31-75-Benzyl-4-methyl-4H-1,2,4-triazole-3-thiolC₁₀H₁₁N₃S205.29
51292-42-32-(4-Bromo-1H-pyrazol-1-yl)propanoic acidC₆H₇BrN₂O₂219.04
51293-47-1(2S)-2-(((tert-Butoxy)carbonyl)amino)-3-methoxypropanoic acidC₉H₁₇NO₅219.24
51294-16-7PerfluoromethyldecalinC₁₁F₂₀512.08
51294-32-72-(Pyridin-4-yl)-1H-imidazole-4,5-dicarbonitrileC₁₀H₅N₅195.19
51294-59-87-Bromo-1,2-benzoxazol-3-olC₇H₄BrNO₂214.02
51294-75-84-Bromo-3,5-dimethyl-1-phenyl-1H-pyrazoleC₁₁H₁₁BrN₂251.13
51298-62-5L-NAME hydrochlorideC₇H₁₆ClN₅O₄269.69
513-00-8iso-OMPAC₁₂H₃₂N₄O₃P₂342.36
513-02-0Triisopropyl phosphateC₉H₂₁O₄P224.24
513-08-6Tripropyl phosphateC₉H₂₁O₄P224.24
513-10-0Echothiophate iodideC₉H₂₃INO₃PS383.23
513-12-22-(Ethylsulfonyl)ethanolC₄H₁₀O₃S138.19
513-20-2Bicyclo(3.1.0)hexan-2-one, 5-(1-methylethyl)-C₉H₁₄O138.21

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