Molecular formula
C21H18ClN3O3
54 compounds have this formula on CompoundList.
- Molar mass
- 395.84g/mol
- Monoisotopic mass
- 395.1037Da
- Atoms
- 46
- Elements
- 5
- Rings plus double bonds
- 14
The formula C21H18ClN3O3 describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 1 chlorine atom, 3 nitrogen atoms and 3 oxygen atoms. It is written in Hill notation: carbon first, then hydrogen, then the other elements in alphabetical order. The formula tells you which atoms are present, not how they are connected, which is why several different chemicals can share it.
Elemental composition
- C Carbon × 2163.72%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 184.58%1.008 × 18 = 18.144 g/mol
- Cl Chlorine × 18.96%35.45 × 1 = 35.450 g/mol
- N Nitrogen × 310.62%14.007 × 3 = 42.021 g/mol
- O Oxygen × 312.13%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C21H18ClN3O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 54 of 54 compounds
![2-({[4-(4-Chlorophenyl)-3-methyl-1H-pyrazol-5-yl]amino}methylidene)-5-(furan-2-yl)cyclohexane-1,3-dione chemical structure, C21H18ClN3O3, CAS 890641-74-4](/s/BALQQPHMEFFWLZ-UHFFFAOYSA-N.svg)
2-({[4-(4-Chlorophenyl)-3-methyl-1H-pyrazol-5-yl]amino}methylidene)-5-(furan-2-yl)cyclohexane-1,3-dione
CAS 890641-74-4C21H18ClN3O3
5-Chloro-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-3-methyl-1-benzofuran-2-carboxamide
CAS 724741-17-7C21H18ClN3O3
![2-(2-Chlorophenyl)-3-(2-methoxyethyl)-10-methylpyrimido[4,5-b]quinoline-4,5(3H,10H)-dione chemical structure, C21H18ClN3O3, CAS 883957-09-3](/s/QRQXWYIEYCQSQN-UHFFFAOYSA-N.svg)
2-(2-Chlorophenyl)-3-(2-methoxyethyl)-10-methylpyrimido[4,5-b]quinoline-4,5(3H,10H)-dione
CAS 883957-09-3C21H18ClN3O3
2-(Benzhydrylamino)-N-(4-chloro-3-nitrophenyl)acetamide
CAS 329779-17-1C21H18ClN3O3
N'-(4-((4-Chlorobenzyl)oxy)-3-methoxybenzylidene)nicotinohydrazide
CAS 481028-71-1C21H18ClN3O3
2-Chloro-N-(2-(3-(3-methoxyphenyl)ureido)phenyl)benzamide
CAS 1203253-74-0C21H18ClN3O3
N-(2-(3-(2-Chlorophenyl)ureido)phenyl)-2-methoxybenzamide
CAS 1207006-69-6C21H18ClN3O3
![N-(4-Acetylphenyl)-2-{[2-(4-chlorophenyl)-6-methylpyrimidin-4-yl]oxy}acetamide chemical structure, C21H18ClN3O3, CAS 1251597-64-4](/s/NAMTZZDXRYXRLY-UHFFFAOYSA-N.svg)
N-(4-Acetylphenyl)-2-{[2-(4-chlorophenyl)-6-methylpyrimidin-4-yl]oxy}acetamide
CAS 1251597-64-4C21H18ClN3O3
![7-(3-Chloro-2-methylphenyl)-2-(2,5-dimethoxyphenyl)imidazo[1,2-a]pyrazin-8(7H)-one chemical structure, C21H18ClN3O3, CAS 1206985-21-8](/s/SGANADIWAPLQCS-UHFFFAOYSA-N.svg)
7-(3-Chloro-2-methylphenyl)-2-(2,5-dimethoxyphenyl)imidazo[1,2-a]pyrazin-8(7H)-one
CAS 1206985-21-8C21H18ClN3O3
N-(1-Acetylindolin-6-yl)-3-(2-chlorophenyl)-5-methylisoxazole-4-carboxamide
CAS 1021208-11-6C21H18ClN3O3
![N-(3-Acetylphenyl)-2-[2-(4-chlorophenyl)-4-methyl-6-oxo-1,6-dihydropyrimidin-1-yl]acetamide chemical structure, C21H18ClN3O3, CAS 1775482-80-8](/s/CIIIRQHMDHXGNK-UHFFFAOYSA-N.svg)
N-(3-Acetylphenyl)-2-[2-(4-chlorophenyl)-4-methyl-6-oxo-1,6-dihydropyrimidin-1-yl]acetamide
CAS 1775482-80-8C21H18ClN3O3
![N-(4-Acetylphenyl)-2-[2-(4-chlorophenyl)-4-methyl-6-oxo-1,6-dihydropyrimidin-1-yl]acetamide chemical structure, C21H18ClN3O3, CAS 1775394-52-9](/s/BSKNECWPMHGXGX-UHFFFAOYSA-N.svg)
N-(4-Acetylphenyl)-2-[2-(4-chlorophenyl)-4-methyl-6-oxo-1,6-dihydropyrimidin-1-yl]acetamide
CAS 1775394-52-9C21H18ClN3O3
3-(2-Chlorophenyl)-N-(1-ethyl-2-oxoindolin-5-yl)-5-methylisoxazole-4-carboxamide
CAS 921837-14-1C21H18ClN3O3
7-Chloro-6-(4-(dimethylamino)phenyl)-4-hydroxy-3-(3-methylisoxazol-5-yl) quinolin-2(1H)-one
CAS 1398309-87-9C21H18ClN3O3
![2-[4-(Benzyloxy)-2-chlorobenzoyl]-N-phenyl-1-hydrazinecarboxamide chemical structure, C21H18ClN3O3, CAS 478039-94-0](/s/XWKPBFWSCZHAIT-UHFFFAOYSA-N.svg)
2-[4-(Benzyloxy)-2-chlorobenzoyl]-N-phenyl-1-hydrazinecarboxamide
CAS 478039-94-0C21H18ClN3O3
![1-(3-Chlorophenyl)-3-[(2-hydroxy-2,2-diphenylacetyl)amino]urea chemical structure, C21H18ClN3O3, CAS 420090-91-1](/s/ZLRBXMCQPSCZRG-UHFFFAOYSA-N.svg)
1-(3-Chlorophenyl)-3-[(2-hydroxy-2,2-diphenylacetyl)amino]urea
CAS 420090-91-1C21H18ClN3O3
![2(1H)-Quinolinone, 7-chloro-6-[4-(dimethylamino)phenyl]-4-hydroxy-3-(5-methyl-3-isoxazolyl)- chemical structure, C21H18ClN3O3, CAS 1398330-16-9](/s/QQMXLVUNZBLVIC-UHFFFAOYSA-N.svg)
2(1H)-Quinolinone, 7-chloro-6-[4-(dimethylamino)phenyl]-4-hydroxy-3-(5-methyl-3-isoxazolyl)-
CAS 1398330-16-9C21H18ClN3O3
![2-[(3-Chlorophenyl)carbamoylamino]-N-(4-methoxyphenyl)benzamide chemical structure, C21H18ClN3O3, CAS 667407-17-2](/s/PHBYJVLTMUFYLY-UHFFFAOYSA-N.svg)
2-[(3-Chlorophenyl)carbamoylamino]-N-(4-methoxyphenyl)benzamide
CAS 667407-17-2C21H18ClN3O3
![4-[6-Chloro-3-(phenylamino)imidazo[1,2-a]pyridin-2-yl]-2,6-dimethoxyphenol chemical structure, C21H18ClN3O3, CAS 954240-51-8](/s/UYCYOBBBOCORET-UHFFFAOYSA-N.svg)
4-[6-Chloro-3-(phenylamino)imidazo[1,2-a]pyridin-2-yl]-2,6-dimethoxyphenol
CAS 954240-51-8C21H18ClN3O3
1-(3-Chlorophenyl)-4-(2-(3,4-dihydroquinolin-1(2H)-yl)-2-oxoethyl)pyrazine-2,3(1H,4H)-dione
CAS 1421483-42-2C21H18ClN3O3
![3-(4-Chlorobenzyl)-8,8-dimethyl-7,10-dihydro-8H-pyrano[3'',4'':5',6']pyrido[3',2':4,5]furo[3,2-d]pyrimidin-4(3H)-one chemical structure, C21H18ClN3O3, CAS 896847-65-7](/s/IZEKEPOOLDDSCJ-UHFFFAOYSA-N.svg)
3-(4-Chlorobenzyl)-8,8-dimethyl-7,10-dihydro-8H-pyrano[3'',4'':5',6']pyrido[3',2':4,5]furo[3,2-d]pyrimidin-4(3H)-one
CAS 896847-65-7C21H18ClN3O3
![N'-[(1E)-(2H-1,3-Benzodioxol-5-yl)methylidene]-3-(3-chlorophenyl)-3-(1H-pyrrol-1-yl)propanehydrazide chemical structure, C21H18ClN3O3, CAS 866134-01-2](/s/INFWSGRITVBSIS-YDZHTSKRSA-N.svg)
N'-[(1E)-(2H-1,3-Benzodioxol-5-yl)methylidene]-3-(3-chlorophenyl)-3-(1H-pyrrol-1-yl)propanehydrazide
CAS 866134-01-2C21H18ClN3O3
![5-(3-Chlorophenyl)-1,3-dimethyl-6-(o-tolylamino)furo[2,3-d]pyrimidine-2,4(1H,3H)-dione chemical structure, C21H18ClN3O3, CAS 938037-90-2](/s/VDAHIPAMAJGLJY-UHFFFAOYSA-N.svg)
5-(3-Chlorophenyl)-1,3-dimethyl-6-(o-tolylamino)furo[2,3-d]pyrimidine-2,4(1H,3H)-dione
CAS 938037-90-2C21H18ClN3O3
![1-[(2-Chlorophenyl)methyl]-N-(4-acetamidophenyl)-6-oxo-1,6-dihydropyridine-3-carboxamide chemical structure, C21H18ClN3O3, CAS 946310-97-0](/s/ZFCXZHYJWAMPDL-UHFFFAOYSA-N.svg)
1-[(2-Chlorophenyl)methyl]-N-(4-acetamidophenyl)-6-oxo-1,6-dihydropyridine-3-carboxamide
CAS 946310-97-0C21H18ClN3O3
- 1-(3-(2-Chlorophenyl)-5-methylisoxazole-4-carbonyl)-N-methylindoline-2-carboxamide1103514-94-8C21H18ClN3O3
- 1-[(4-Chlorophenyl)methyl]-N-(4-acetamidophenyl)-6-oxo-1,6-dihydropyridine-3-carboxamide946361-55-3C21H18ClN3O3
- 3-(2-Chlorobenzyl)-5-(1,2,3,4-tetrahydroquinoline-1-carbonyl)pyrimidine-2,4(1H,3H)-dione1396786-97-2C21H18ClN3O3
- Glutarimide, N-(3-chloro-p-tolyl)-2-(3,4-dihydro-2-methyl-4-oxo-3-quinazolinyl)-69557-26-2C21H18ClN3O3
- N'-{1-[(4-Chlorophenyl)methyl]-6-oxo-1,6-dihydropyridine-3-carbonyl}-3-methylbenzohydrazide1040665-13-1C21H18ClN3O3
- Methyl 8-chloro-4-{[2-(1H-indol-3-yl)ethyl]amino}-2-oxo-1,2-dihydroquinoline-3-carboxylate1251705-58-4C21H18ClN3O3
- 5-(2-Chlorobenzyl)-2-(3,4-dimethoxyphenyl)pyrazolo[1,5-a]pyrazin-4(5H)-one1326835-10-2C21H18ClN3O3
- 5-(3-Chlorobenzyl)-2-(3,4-dimethoxyphenyl)pyrazolo[1,5-a]pyrazin-4(5H)-one1326877-06-8C21H18ClN3O3
- 5-(4-Chlorobenzyl)-2-(3,4-dimethoxyphenyl)pyrazolo[1,5-a]pyrazin-4(5H)-one1326845-05-9C21H18ClN3O3
- Benzoic acid, 4-chloro-2-((2-methoxyphenyl)amino)-, ((4-hydroxyphenyl)methylene)hydrazide75412-59-8C21H18ClN3O3
- N-(3-Acetamidophenyl)-1-(4-chlorobenzyl)-2-oxo-1,2-dihydropyridine-3-carboxamide941989-07-7C21H18ClN3O3
- N-(4-Acetamidophenyl)-1-(4-chlorobenzyl)-2-oxo-1,2-dihydropyridine-3-carboxamide941903-17-9C21H18ClN3O3
- N-(3-Acetamidophenyl)-1-(2-chlorobenzyl)-2-oxo-1,2-dihydropyridine-3-carboxamide946248-02-8C21H18ClN3O3
- N-(4-Acetamidophenyl)-1-(2-chlorobenzyl)-2-oxo-1,2-dihydropyridine-3-carboxamide946248-85-7C21H18ClN3O3
- N-(4-Acetamidophenyl)-1-(3-chlorobenzyl)-2-oxo-1,2-dihydropyridine-3-carboxamide946332-02-1C21H18ClN3O3
- N-{[5-(4-Chlorophenyl)-1,2-oxazol-3-yl]methyl}-5-oxo-1-phenylpyrrolidine-3-carboxamide953250-94-7C21H18ClN3O3
- 3-(2-Chlorophenyl)-5-methyl-N-(1-methyl-2-oxo-1,2,3,4-tetrahydroquinolin-6-yl)isoxazole-4-carboxamide922130-42-5C21H18ClN3O3
- N-(Benzo[d][1,3]dioxol-5-yl)-1-(4-chlorophenyl)-3,4-dihydropyrrolo[1,2-a]pyrazine-2(1H)-carboxamide900001-70-9C21H18ClN3O3
- 3-[3-(4-Chlorophenyl)-1,2,4-oxadiazol-5-yl]-7-(diethylamino)-2H-chromen-2-one931954-11-9C21H18ClN3O3
- 5-(2-Chlorophenyl)-1,3-dimethyl-6-(o-tolylamino)furo[2,3-d]pyrimidine-2,4(1H,3H)-dione946243-94-3C21H18ClN3O3
- N'-(1-Benzyl-6-oxo-1,6-dihydropyridine-3-carbonyl)-2-(4-chlorophenyl)acetohydrazide1040663-43-1C21H18ClN3O3
- 5-Chloro-N-[1-(4-methoxybenzyl)-1H-pyrazol-5-yl]-3-methyl-1-benzofuran-2-carboxamide1170832-47-9C21H18ClN3O3
- (E)-3-(2-Chlorophenyl)-N-(1-((2,3-dihydrobenzo[b][1,4]dioxin-2-yl)methyl)-1H-pyrazol-4-yl)acrylamide1798428-75-7C21H18ClN3O3
- 4-((5-Chloro-2-furyl)methoxy)-1-(2-cyclopropyl-1-methyl-1H-benzimidazol-6-yl)pyridin-2(1H)-one1447913-81-6C21H18ClN3O3
- (E)-8-Chloro-2-(3-(2-methoxyphenyl)acryloyl)-3,4-dihydro-1H-dipyrido[1,2-a:4',3'-d]pyrimidin-11(2H)-one2035023-34-6C21H18ClN3O3
- 1-{13-Chloro-2-oxo-1,5,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),9,11,13-tetraen-5-yl}-4-phenylbutane-1,4-dione1903387-63-2C21H18ClN3O3
- (2E)-N-(4-Chloro-2-methoxy-5-methylphenyl)-2-cyano-2-(1-ethyl-2-oxoindol-3-ylidene)acetamide568554-34-7C21H18ClN3O3
- 2-(Chloromethyl)-5,6-bis(4-methoxyphenyl)furo[2,3-d]pyrimidin-4-amine1000933-70-9C21H18ClN3O3
- (9H-Fluoren-9-yl)methyl 3-[5-(chloromethyl)-1,2,4-oxadiazol-3-yl]azetidine-1-carboxylate2172010-53-4C21H18ClN3O3
- Benzyl N-(6-chloropyrimidin-4-yl)-N-(3,4-dihydro-2H-1-benzopyran-4-yl)carbamate2680885-95-2C21H18ClN3O3
Frequently asked questions
What is the molar mass of C21H18ClN3O3?
The molar mass of C21H18ClN3O3 is 395.84 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 1 chlorine atom, 3 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 395.1037 Da.
How many compounds have the formula C21H18ClN3O3?
CompoundList lists 54 compounds with the molecular formula C21H18ClN3O3, including 2-({[4-(4-Chlorophenyl)-3-methyl-1H-pyrazol-5-yl]amino}methylidene)-5-(furan-2-yl)cyclohexane-1,3-dione, 5-Chloro-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-3-methyl-1-benzofuran-2-carboxamide, 2-(2-Chlorophenyl)-3-(2-methoxyethyl)-10-methylpyrimido[4,5-b]quinoline-4,5(3H,10H)-dione. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.
What is the degree of unsaturation of C21H18ClN3O3?
C21H18ClN3O3 has a degree of unsaturation of 14. That is the total number of rings and pi bonds (a double bond counts as one, a triple bond as two) in any structure with this formula.