Molecular formula
C21H21NO3
253 compounds have this formula on CompoundList.
- Molar mass
- 335.40g/mol
- Monoisotopic mass
- 335.1521Da
- Atoms
- 46
- Elements
- 4
- Rings plus double bonds
- 12
The formula C21H21NO3 describes a molecule made of 21 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom 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 × 2175.20%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 216.31%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 14.18%14.007 × 1 = 14.007 g/mol
- O Oxygen × 314.31%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C21H21NO3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 253 compounds
Coumarin, 7-hydroxy-4-phenyl-8-(piperidinomethyl)-
CAS 10549-67-4C21H21NO3
LIN28 inhibitor LI71
CAS 1357248-83-9C21H21NO3
2-((4-Phenylhepta-1,6-dien-4-yl)carbamoyl)benzoic acid
CAS 304481-22-9C21H21NO3
4-N-Fmoc-amino-cyclohexanone
CAS 391248-11-6C21H21NO3
4-Methoxy-N,N-bis(4-methoxyphenyl)benzenamine
CAS 13050-56-1C21H21NO3
N-(4-Methyl-2-oxochromen-7-yl)-2-phenylpentanamide
CAS 926521-24-6C21H21NO3
7-Hydroxy-2-methyl-3-phenyl-8-(pyrrolidin-1-ylmethyl)-4H-chromen-4-one
CAS 844652-94-4C21H21NO3
N-(Furan-2-ylmethyl)-3-(2-hydroxy-5-methylphenyl)-3-phenylpropanamide
CAS 664971-02-2C21H21NO3
2,3-Dimethoxy-N-(1-naphthalen-1-ylethyl)benzamide
CAS 924175-61-1C21H21NO3
3-(2,4-Dimethoxyanilino)-1-(2-naphthyl)-1-propanone
CAS 882073-38-3C21H21NO3
N-(Furan-2-ylmethyl)-3-(2-hydroxy-4-methylphenyl)-3-phenylpropanamide
CAS 713097-56-4C21H21NO3
![3-Hydroxy-5-methyl-3-[2-oxo-2-(5,6,7,8-tetrahydronaphthalen-2-yl)ethyl]-1H-indol-2-one chemical structure, C21H21NO3, CAS 384373-70-0](/s/HHCZVXAHTSZMPQ-UHFFFAOYSA-N.svg)
3-Hydroxy-5-methyl-3-[2-oxo-2-(5,6,7,8-tetrahydronaphthalen-2-yl)ethyl]-1H-indol-2-one
CAS 384373-70-0C21H21NO3
7-Hydroxy-4-methyl-3-phenyl-8-(pyrrolidin-1-ylmethyl)-2H-chromen-2-one
CAS 887218-17-9C21H21NO3
(2Z)-2-Benzylidene-6-hydroxy-7-(piperidin-1-ylmethyl)-1-benzofuran-3(2H)-one
CAS 1613190-14-9C21H21NO3
![N-(3-Methylphenyl)-2-(6,7,8,9-tetrahydrodibenzo[b,d]furan-2-yloxy)acetamide chemical structure, C21H21NO3, CAS 380645-89-6](/s/NYMGMWGUBBEZSL-UHFFFAOYSA-N.svg)
N-(3-Methylphenyl)-2-(6,7,8,9-tetrahydrodibenzo[b,d]furan-2-yloxy)acetamide
CAS 380645-89-6C21H21NO3
8-Cyclopentylidene-2-(4-methoxyphenyl)-3a,4,7,7a-tetrahydro-1H-4,7-methanoisoindole-1,3(2H)-dione
CAS 357623-56-4C21H21NO3
![6-[[Benzyl(methyl)amino]methyl]-7-hydroxy-2,3-dihydro-1H-cyclopenta[c]chromen-4-one chemical structure, C21H21NO3, CAS 303120-11-8](/s/KRCRLEJHLWTLDE-UHFFFAOYSA-N.svg)
6-[[Benzyl(methyl)amino]methyl]-7-hydroxy-2,3-dihydro-1H-cyclopenta[c]chromen-4-one
CAS 303120-11-8C21H21NO3
7-Hydroxy-3-phenyl-8-(piperidin-1-ylmethyl)-4H-chromen-4-one
CAS 111978-65-5C21H21NO3
![2'-Benzyl-1'-oxo-1',4'-dihydro-2'H-spiro[cyclopentane-1,3'-isoquinoline]-4'-carboxylic acid chemical structure, C21H21NO3, CAS 1217531-04-8](/s/MOWXAAQSBVCOGG-UHFFFAOYSA-N.svg)
2'-Benzyl-1'-oxo-1',4'-dihydro-2'H-spiro[cyclopentane-1,3'-isoquinoline]-4'-carboxylic acid
CAS 1217531-04-8C21H21NO3
![9-Benzyl-3-ethyl-4-methyl-9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-one chemical structure, C21H21NO3, CAS 848995-43-7](/s/YTRUOXOYJQUOLO-UHFFFAOYSA-N.svg)
9-Benzyl-3-ethyl-4-methyl-9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-one
CAS 848995-43-7C21H21NO3
3-Quinuclidinyl xanthene-9-carboxylate
CAS 102585-08-0C21H21NO3
![N-[(4-Phenyloxan-4-yl)methyl]-1-benzofuran-2-carboxamide chemical structure, C21H21NO3, CAS 354993-14-9](/s/UCOQGZSBOSBGJM-UHFFFAOYSA-N.svg)
N-[(4-Phenyloxan-4-yl)methyl]-1-benzofuran-2-carboxamide
CAS 354993-14-9C21H21NO3
6-Hydroxy-7-phenyl-4-(piperidin-1-ylmethyl)-2H-chromen-2-one
CAS 859141-72-3C21H21NO3
![9-Isopropyl-2-methyl-3-phenyl-9,10-dihydrochromeno[8,7-e][1,3]oxazin-4(8H)-one chemical structure, C21H21NO3, CAS 946293-44-3](/s/UGHPQTDEWOQDGF-UHFFFAOYSA-N.svg)
9-Isopropyl-2-methyl-3-phenyl-9,10-dihydrochromeno[8,7-e][1,3]oxazin-4(8H)-one
CAS 946293-44-3C21H21NO3
- N-(1,3-Benzodioxol-5-ylmethyl)-3-(furan-2-yl)-3-phenylpropan-1-amine433944-61-7C21H21NO3
- N-[2-(4-tert-Butylphenyl)-4-oxo-4H-chromen-7-yl]acetamide923120-96-1C21H21NO3
- N-[2-(4-tert-Butylphenyl)-4-oxo-4H-chromen-6-yl]acetamide923140-46-9C21H21NO3
- N-(2-Methylcyclohexyl)-3-oxo-3H-benzo[f]chromene-2-carboxamide364787-07-5C21H21NO3
- 17beta-HSD1-IN-12760791-96-4C21H21NO3
- 9-Isobutyl-3-phenyl-9,10-dihydrochromeno[8,7-e][1,3]oxazin-4(8H)-one951995-98-5C21H21NO3
- 4-Ethyl-9-(4-ethylphenyl)-9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-one861651-22-1C21H21NO3
- N-(2-Ethylphenyl)-5-[(4-methylphenoxy)methyl]furan-2-carboxamide890615-13-1C21H21NO3
- 4-[(3aR,4S,9bS)-6-Ethoxy-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinolin-4-yl]benzoic acid956189-58-5C21H21NO3
- [3-Methyl-4-(4-piperidyloxy)benzofuran-2-yl]-phenyl-methanone1402930-09-9C21H21NO3
- Methyl 2-(4-butoxyphenyl)quinoline-4-carboxylate51842-75-2C21H21NO3
- 2-Ethoxy-N-(2-phenoxyethyl)-1-naphthamide1105209-01-5C21H21NO3
- 2-(9H-Fluoren-2-ylcarbamoyl)cyclohexanecarboxylic acid6341-13-5C21H21NO3
- N-[2-(4-Ethoxyphenoxy)ethyl]naphthalene-2-carboxamide1105212-38-1C21H21NO3
- 2-(3-Isopropoxyphenyl)-6,8-dimethylquinoline-4-carboxylic acid438230-16-1C21H21NO3
- N-[2-(3-Methoxyphenoxy)ethyl]-2-naphthalen-1-ylacetamide328004-09-7C21H21NO3
- 3-[3-[(2,3-Dihydro-1H-inden-5-yl)oxy]propyl]-1H-indole-2-carboxylic acid1072899-41-2C21H21NO3
- 2-(3-Isobutoxyphenyl)-6-methylquinoline-4-carboxylic acid438221-81-9C21H21NO3
- 2-(4-Isobutoxyphenyl)-8-methylquinoline-4-carboxylic acid438234-09-4C21H21NO3
- 2-(4-Isopropoxyphenyl)-6,8-dimethylquinoline-4-carboxylic acid895966-49-1C21H21NO3
- Methyl 1-(4-(tert-butyl)benzoyl)-1H-indole-3-carboxylate328282-79-7C21H21NO3
- N-[(2-Hydroxynaphthyl)(2-methoxyphenyl)methyl]propanamide5926-52-3C21H21NO3
- 2-(4-Butoxyphenyl)-8-methylquinoline-4-carboxylic acid438231-93-7C21H21NO3
- 1'-Oxo-2'-phenyl-1',4'-dihydro-2'H-spiro[cyclohexane-1,3'-isoquinoline]-4'-carboxylic acid60734-37-4C21H21NO3
- 6,8-Dimethyl-2-(4-propoxyphenyl)quinoline-4-carboxylic acid587851-88-5C21H21NO3
- 6-Ethyl-2-(4-isopropoxyphenyl)quinoline-4-carboxylic acid862680-52-2C21H21NO3
- 2-(2-Isopropoxyphenyl)-6,8-dimethylquinoline-4-carboxylic acid932796-19-5C21H21NO3
- Benzoic acid, 2-[(1-butyl-2-methyl-1H-indol-3-yl)carbonyl]-67697-49-8C21H21NO3
- 1 suppliers(9H-Fluoren-9-yl)methyl 4-oxoazepane-1-carboxylate6048-53-9C21H21NO3
- 1-Oxo-1-(p-tolyl)propan-2-yl 3-(1H-indol-3-yl)propanoate799266-13-0C21H21NO3
- 2-(3-Butoxyphenyl)-6-methylquinoline-4-carboxylic acid932928-74-0C21H21NO3
- 3,5-Diethoxy-N-(naphthalen-1-yl)benzamide354767-30-9C21H21NO3
- 3-Hydroxy-1-methyl-3-[2-oxo-2-(5,6,7,8-tetrahydronaphthalen-2-yl)ethyl]-1,3-dihydro-2H-indol-2-one404586-27-2C21H21NO3
- 2-(1H-Indol-3-yl)-4-oxo-4-[4-(propan-2-yl)phenyl]butanoic acid937605-12-4C21H21NO3
- 2-(2,4-Dimethylphenyl)-2-oxoethyl 3-(1H-indol-3-yl)propanoate879053-64-2C21H21NO3
- 6,8-Dimethyl-2-(3-propoxyphenyl)quinoline-4-carboxylic acid895932-30-6C21H21NO3
- 2-(3-Butoxyphenyl)-8-methylquinoline-4-carboxylic acid932928-78-4C21H21NO3
- 2-(3-Isobutoxyphenyl)-8-methylquinoline-4-carboxylic acid932796-07-1C21H21NO3
- (5-Methoxy-2-phenyl-1-benzofuran-3-yl)-piperidin-1-ylmethanone301682-52-0C21H21NO3
- (Z)-6-Hydroxy-2-(4-methylbenzylidene)-7-(pyrrolidin-1-ylmethyl)benzofuran-3(2H)-one887214-12-2C21H21NO3
- 3-(Benzyloxy)-2-(2-(benzyloxy)ethoxy)pyridine156840-57-2C21H21NO3
- 6,8-Dimethyl-2-(2-propoxyphenyl)quinoline-4-carboxylic acid932928-90-0C21H21NO3
- (Z)-6-Hydroxy-2-(3-methylbenzylidene)-7-(pyrrolidin-1-ylmethyl)benzofuran-3(2H)-one899390-07-9C21H21NO3
- 5-Methyl-2-(4-phenoxyphenyl)hexahydro-1H-isoindole-1,3(2H)-dione360790-13-2C21H21NO3
- 3-Methyl-N-(8-methyl-4-oxo-3-phenyl-4H-chromen-2-yl)butanamide883959-83-9C21H21NO3
- N-(4-Methylphenyl)-2-(6,7,8,9-tetrahydrodibenzofuran-2-yloxy)acetamide380645-90-9C21H21NO3
- 3,6-Dimethyl-2-[4-(propan-2-yloxy)phenyl]quinoline-4-carboxylic acid438219-65-9C21H21NO3
- (Z)-6-Hydroxy-2-(2-methylbenzylidene)-7-(pyrrolidin-1-ylmethyl)benzofuran-3(2H)-one896837-46-0C21H21NO3
- 3-(2-Ethoxyethoxy)-N-naphthalen-2-ylbenzamide838811-85-1C21H21NO3
- 1'-(2-Methylbenzoyl)spiro[3H-chromene-2,4'-piperidine]-4-one877810-67-8C21H21NO3
- (Z)-2-Benzylidene-6-hydroxy-4-methyl-7-(pyrrolidin-1-ylmethyl)benzofuran-3(2H)-one903192-91-6C21H21NO3
- 2,2-Dimethyl-N-[2-(4-methylphenyl)-4-oxo-4H-chromen-6-yl]propanamide923679-45-2C21H21NO3
- Ethyl 4-(4-((2,5-dihydro-1H-pyrrol-1-yl)methyl)benzoyl)benzoate898763-93-4C21H21NO3
- Ethyl 2-(3-((2,5-dihydro-1H-pyrrol-1-yl)methyl)benzoyl)benzoate898789-81-6C21H21NO3
- Ethyl 3-(3-((2,5-dihydro-1H-pyrrol-1-yl)methyl)benzoyl)benzoate898789-84-9C21H21NO3
- Ethyl 4-(3-((2,5-dihydro-1H-pyrrol-1-yl)methyl)benzoyl)benzoate898789-87-2C21H21NO3
- Ethyl 2-(2-((2,5-dihydro-1H-pyrrol-1-yl)methyl)benzoyl)benzoate898762-97-5C21H21NO3
- 5,5-Dimethyl-2-{[(2-phenoxyphenyl)amino]methylene}cyclohexane-1,3-dione328084-55-5C21H21NO3
- 2-Propenoic acid, 2-cyano-3,3-diphenyl-, 3-hydroxy-2,2-dimethylpropyl ester129423-62-7C21H21NO3
- 2-[4-(Isopentyloxy)phenyl]-4-quinolinecarboxylic acid370584-06-8C21H21NO3
- 7-Hydroxy-3-phenyl-8-(piperidin-1-ylmethyl)-2H-chromen-2-one887217-58-5C21H21NO3
- N-(2,4-Dimethylphenyl)-5-[(4-methylphenoxy)methyl]furan-2-carboxamide862389-89-7C21H21NO3
- N-(2-Methoxyphenyl)-3-[5-(4-methylphenyl)furan-2-yl]propanamide923200-66-2C21H21NO3
- N-[3-(2-Methoxyethoxy)phenyl]-2-(1-naphthyl)acetamide925619-75-6C21H21NO3
- Ethyl 2-(4-((2,5-dihydro-1H-pyrrol-1-yl)methyl)benzoyl)benzoate898763-89-8C21H21NO3
- Ethyl 3-(4-((2,5-dihydro-1H-pyrrol-1-yl)methyl)benzoyl)benzoate898763-91-2C21H21NO3
- Ethyl 3-(2-((2,5-dihydro-1H-pyrrol-1-yl)methyl)benzoyl)benzoate898762-99-7C21H21NO3
- (9H-Fluoren-9-yl)methyl 4-formylpiperidine-1-carboxylate1097779-02-6C21H21NO3
- 2-[[4-(Diethylamino)phenyl]-hydroxymethyl]naphthalene-1,4-dione6627-15-2C21H21NO3
- (Z)-4-(4-(tert-Butyl)benzylidene)-2-(3-methoxyphenyl)oxazol-5(4H)-one1321863-75-5C21H21NO3
- 9-(4-Isopropylphenyl)-4-methyl-9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-one858762-99-9C21H21NO3
- 3,4-Dimethyl-9-(4-methylbenzyl)-9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-one858758-74-4C21H21NO3
- 4-Ethyl-9-(4-methylbenzyl)-9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-one859138-86-6C21H21NO3
- 7,8-Dimethyl-2-[4-(methylethoxy)phenyl]quinoline-4-carboxylic acid588681-45-2C21H21NO3
- 2-[4-(3-Methylphenoxy)phenyl]hexahydro-1H-isoindole-1,3(2H)-dione352671-46-6C21H21NO3
- 3-(Furan-2-yl)-N-(4-methoxyphenyl)-3-(4-methylphenyl)propanamide378770-03-7C21H21NO3
Frequently asked questions
What is the molar mass of C21H21NO3?
The molar mass of C21H21NO3 is 335.40 g/mol, calculated from standard atomic weights for 21 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 3 oxygen atoms. The monoisotopic mass is 335.1521 Da.
How many compounds have the formula C21H21NO3?
CompoundList lists 253 compounds with the molecular formula C21H21NO3, including Coumarin, 7-hydroxy-4-phenyl-8-(piperidinomethyl)-, LIN28 inhibitor LI71, 2-((4-Phenylhepta-1,6-dien-4-yl)carbamoyl)benzoic acid. 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 C21H21NO3?
C21H21NO3 has a degree of unsaturation of 12. 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.