Molecular formula
C21H21NO5
333 compounds have this formula on CompoundList.
- Molar mass
- 367.40g/mol
- Monoisotopic mass
- 370.1608Da
- Atoms
- 48
- Elements
- 4
- Rings plus double bonds
- 12
The formula C21H21NO5 describes a molecule made of 21 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 5 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 × 2168.65%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 215.76%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 13.81%14.007 × 1 = 14.007 g/mol
- O Oxygen × 521.77%15.999 × 5 = 79.995 g/mol
Look up another formula
Compounds with the formula C21H21NO5
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 200 of 333 compounds
![(3S,6S)-4-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-6-methylmorpholine-3-carboxylic acid chemical structure, C21H21NO5, CAS 1932229-43-0](/s/HKUVDADVQCWQEY-DJJJIMSYSA-N.svg)
(3S,6S)-4-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-6-methylmorpholine-3-carboxylic acid
CAS 1932229-43-0C21H21NO5
2-(3-Methoxyphenyl)-2-oxoethyl 1-benzyl-5-oxo-3-pyrrolidinecarboxylate
CAS 847478-57-3C21H21NO5
![(4E)-4-[Hydroxy-(4-methoxyphenyl)methylidene]-1-(3-hydroxypropyl)-5-phenylpyrrolidine-2,3-dione chemical structure, C21H21NO5, CAS 6194-88-3](/s/TTZRFYFUIJDJDG-HTXNQAPBSA-N.svg)
(4E)-4-[Hydroxy-(4-methoxyphenyl)methylidene]-1-(3-hydroxypropyl)-5-phenylpyrrolidine-2,3-dione
CAS 6194-88-3C21H21NO5
(2R,4S)-3-Benzoyl-4-ethoxylcarbonylmethyl-4-methyl-5-oxazolidinone
CAS 113806-36-3C21H21NO5
(2S,3R)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)-3-hydroxypiperidine-2-carboxylic acid
CAS 194298-02-7C21H21NO5
![(Z)-2-((5-Methylfuran-2-yl)methylene)-8-((tetrahydrofuran-2-yl)methyl)-8,9-dihydro-2H-benzofuro[7,6-e][1,3]oxazin-3(7H)-one chemical structure, C21H21NO5, CAS 951929-37-6](/s/SBNGXPMHXXRXBN-OCKHKDLRSA-N.svg)
(Z)-2-((5-Methylfuran-2-yl)methylene)-8-((tetrahydrofuran-2-yl)methyl)-8,9-dihydro-2H-benzofuro[7,6-e][1,3]oxazin-3(7H)-one
CAS 951929-37-6C21H21NO5
![1-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxycyclopentane-1-carboxylic acid chemical structure, C21H21NO5, CAS 369403-17-8](/s/FPTJRPYTKCYJLR-UHFFFAOYSA-N.svg)
1-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxycyclopentane-1-carboxylic acid
CAS 369403-17-8C21H21NO5
![(Z)-2-(4-Methoxybenzylidene)-8-(2-methoxyethyl)-8,9-dihydro-2H-benzofuro[7,6-e][1,3]oxazin-3(7H)-one chemical structure, C21H21NO5, CAS 946235-75-2](/s/PGFQNIHNWNYFSR-ODLFYWEKSA-N.svg)
(Z)-2-(4-Methoxybenzylidene)-8-(2-methoxyethyl)-8,9-dihydro-2H-benzofuro[7,6-e][1,3]oxazin-3(7H)-one
CAS 946235-75-2C21H21NO5
N-(((9H-Fluoren-9-yl)methoxy)carbonyl)-O-allyl-D-serine
CAS 2381970-72-3C21H21NO5
6-Formyl-1,2,9,10-tetramethoxy-6a,7-dehydroaporphine
CAS 2101836-45-5C21H21NO5
![3-[({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)methyl]-3-hydroxycyclobutane-1-carboxylic acid chemical structure, C21H21NO5, CAS 2402828-94-6](/s/DXOYKUXKEUWFBV-UHFFFAOYSA-N.svg)
3-[({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)methyl]-3-hydroxycyclobutane-1-carboxylic acid
CAS 2402828-94-6C21H21NO5
![(1s,3r)-1-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxy-3-methylcyclobutane-1-carboxylic acid chemical structure, C21H21NO5, CAS 2137086-05-4](/s/UHRROSZUFYOBHX-UHFFFAOYSA-N.svg)
(1s,3r)-1-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxy-3-methylcyclobutane-1-carboxylic acid
CAS 2137086-05-4C21H21NO5
![3-[2-(3,4-Dimethoxyphenyl)ethyl]-3,4-dihydro-2H,8H-chromeno[6,7-e][1,3]oxazin-8-one chemical structure, C21H21NO5, CAS 7400-13-7](/s/GXTBCMYUZWQKAF-UHFFFAOYSA-N.svg)
3-[2-(3,4-Dimethoxyphenyl)ethyl]-3,4-dihydro-2H,8H-chromeno[6,7-e][1,3]oxazin-8-one
CAS 7400-13-7C21H21NO5
![2-[(4-Ethyl-8-methyl-2-oxo-2H-chromen-7-yl)oxy]-N-(3-methoxyphenyl)acetamide chemical structure, C21H21NO5, CAS 379731-57-4](/s/OSFVDHCKMKXKCH-UHFFFAOYSA-N.svg)
2-[(4-Ethyl-8-methyl-2-oxo-2H-chromen-7-yl)oxy]-N-(3-methoxyphenyl)acetamide
CAS 379731-57-4C21H21NO5
Benzeneacetic acid, 4-(5-ethoxy-4-(4-methoxyphenyl)-2-oxazolyl)-, methyl ester
CAS 80589-86-2C21H21NO5
(2R,4S)-Fmoc-4-hydroxypiperidine-2-carboxylic acid
CAS 1822497-12-0C21H21NO5
Ethyl 3-(2-(4-ethoxyphenyl)acetamido)benzofuran-2-carboxylate
CAS 847406-15-9C21H21NO5
3-(4-Methoxyphenyl)-2-oxo-2H-chromen-7-yl diethylcarbamate
CAS 869080-59-1C21H21NO5
Ethyl 3-(1,3-benzodioxol-5-yl)-3,4-dihydro-5-(4-methoxyphenyl)-2H-pyrrole-4-carboxylate
CAS 173864-46-5C21H21NO5
![4-[2-(3-Ethoxyphenyl)-2-oxoethyl]-2-ethyl-1,4-benzoxazepine-3,5(2H,4H)-dione chemical structure, C21H21NO5, CAS 903870-93-9](/s/OYXPPWWGRBRSIW-UHFFFAOYSA-N.svg)
4-[2-(3-Ethoxyphenyl)-2-oxoethyl]-2-ethyl-1,4-benzoxazepine-3,5(2H,4H)-dione
CAS 903870-93-9C21H21NO5
![4-[2-(4-Methoxyphenyl)-2-oxoethyl]-2-(propan-2-yl)-1,4-benzoxazepine-3,5(2H,4H)-dione chemical structure, C21H21NO5, CAS 904011-39-8](/s/ZGNTXMQFRJGBIT-UHFFFAOYSA-N.svg)
4-[2-(4-Methoxyphenyl)-2-oxoethyl]-2-(propan-2-yl)-1,4-benzoxazepine-3,5(2H,4H)-dione
CAS 904011-39-8C21H21NO5
![4-[2-(4-Ethoxyphenyl)-2-oxoethyl]-2-ethyl-1,4-benzoxazepine-3,5(2H,4H)-dione chemical structure, C21H21NO5, CAS 904009-11-6](/s/ZEWCLHNZVSQIJQ-UHFFFAOYSA-N.svg)
4-[2-(4-Ethoxyphenyl)-2-oxoethyl]-2-ethyl-1,4-benzoxazepine-3,5(2H,4H)-dione
CAS 904009-11-6C21H21NO5
![4-[2-(2-Ethoxyphenyl)-2-oxoethyl]-2-ethyl-1,4-benzoxazepine-3,5(2H,4H)-dione chemical structure, C21H21NO5, CAS 903184-62-3](/s/MHSFMJUESROQGO-UHFFFAOYSA-N.svg)
4-[2-(2-Ethoxyphenyl)-2-oxoethyl]-2-ethyl-1,4-benzoxazepine-3,5(2H,4H)-dione
CAS 903184-62-3C21H21NO5
![2-Ethyl-4-[2-(2-methoxy-5-methylphenyl)-2-oxoethyl]-1,4-benzoxazepine-3,5(2H,4H)-dione chemical structure, C21H21NO5, CAS 903590-40-9](/s/LHYXQPZSKKZGQO-UHFFFAOYSA-N.svg)
2-Ethyl-4-[2-(2-methoxy-5-methylphenyl)-2-oxoethyl]-1,4-benzoxazepine-3,5(2H,4H)-dione
CAS 903590-40-9C21H21NO5
- 2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-5-oxohexanoic acid1692075-71-0C21H21NO5
- Fmoc-D-Ser-OAll1182733-60-3C21H21NO5
- Methyl 4-[1-(2H-1,3-benzodioxole-5-carbonyl)piperidin-4-yl]benzoate1421515-41-4C21H21NO5
- N-(4-(Benzo[d][1,3]dioxol-5-yloxy)but-2-yn-1-yl)-3-(4-methoxyphenyl)propanamide1428362-43-9C21H21NO5
- 2-(1-[(9H-Fluoren-9-ylmethoxy)carbonyl]pyrrolidin-3-yl)-2-hydroxyacetic acid1936572-32-5C21H21NO5
- 1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-4-hydroxy-2-methylpyrrolidine-2-carboxylic acid2044712-65-2C21H21NO5
- (2R,6R)-4-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-6-methylmorpholine-2-carboxylic acid1932302-45-8C21H21NO5
- 5-[({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolane-3-carboxylic acid2228434-32-8C21H21NO5
- (4S)-1-Fmoc-4-methoxy-D-proline2171285-66-6C21H21NO5
- (3R,4R)-3-(9H-Fluoren-9-ylmethoxycarbonylamino)oxane-4-carboxylic acid2381389-57-5C21H21NO5
- N-Fmoc-O-cyclopropyl-L-serine2642331-45-9C21H21NO5
- (3R,6R)-4-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-6-methylmorpholine-3-carboxylic acid2227711-20-6C21H21NO5
- N-Benzyl-2-(7,8-dimethoxy-4-methyl-2-oxo-2H-chromen-3-yl)acetamide853896-25-0C21H21NO5
- 3-(7-Methoxy-4-methyl-2-oxo-2H-chromen-3-yl)-N-(4-methoxyphenyl)propanamide879479-26-2C21H21NO5
- 2-(7-Hydroxy-4,8-dimethyl-2-oxo-2H-chromen-3-yl)-N-(4-methoxybenzyl)acetamide853897-44-6C21H21NO5
- (Z)-6-Hydroxy-2-(2-methoxybenzylidene)-7-(morpholinomethyl)benzofuran-3(2H)-one869078-13-7C21H21NO5
- 2-(2-Methoxyethyl)-5-[2-(4-methoxyphenyl)-2-oxoethoxy]isoquinolin-1-one898431-31-7C21H21NO5
- 4-[2-(4-Methoxyphenyl)-2-oxoethyl]-2-propyl-1,4-benzoxazepine-3,5(2H,4H)-dione903858-77-5C21H21NO5
- Ethyl 3-(2-(4-methoxy-3-methylphenyl)acetamido)benzofuran-2-carboxylate955825-59-9C21H21NO5
- Benzyl 3-(4-isopropoxy-1,3-dioxoisoindolin-2-yl)propanoate1396877-45-4C21H21NO5
- 4-(9H-Fluoren-9-ylmethyl) 3-methyl 3,4-morpholinedicarboxylate942153-02-8C21H21NO5
- (2R,4R)-1-Fmoc-4-hydroxypiperidine-2-carboxylic acid2757697-74-6C21H21NO5
- 10-Methoxy-5-(2-methoxybenzoyl)-2-methyl-5,6-dihydro-2H-2,6-methanobenzo[g][1,3]oxazocin-4(3H)-one1023590-10-4C21H21NO5
- 3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)oxane-3-carboxylic acid1691987-20-8C21H21NO5
- (3S,5S)-4-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-5-methylmorpholine-3-carboxylic acid2094011-79-5C21H21NO5
- 1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-4-hydroxypiperidine-4-carboxylic acid1854926-85-4C21H21NO5
- 4-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-2-methylmorpholine-2-carboxylic acid2138217-75-9C21H21NO5
- 2-[1-(9H-Fluoren-9-ylmethoxycarbonyl)pyrrolidin-3-yl]oxyacetic acid2580236-64-0C21H21NO5
- (4R)-3-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-2,2-dimethyl-1,3-oxazolidine-4-carboxylic acid2763886-07-1C21H21NO5
- (4Z)-4-[(3,4-Diethoxyphenyl)methylidene]-2-(2-methoxyphenyl)-1,3-oxazol-5-one340996-65-8C21H21NO5
- 5-[(2-Methoxyphenoxy)methyl]-N-[(4-methylphenyl)methoxy]furan-2-carboxamide828294-66-2C21H21NO5
- N-(4-Methoxybenzyl)-2-(7-methoxy-4-methyl-2-oxo-2H-chromen-3-yl)acetamide853897-68-4C21H21NO5
- (4E)-5-(3,4-Dimethoxyphenyl)-4-[hydroxy(4-methylphenyl)methylidene]-1-methylpyrrolidine-2,3-dione310875-52-6C21H21NO5
- 2-(7-Hydroxy-4,8-dimethyl-2-oxo-2H-chromen-3-yl)-N-(3-methoxybenzyl)acetamide853896-37-4C21H21NO5
- 2-(7-Hydroxy-4-methyl-2-oxo-2H-chromen-3-yl)-N-[2-(4-methoxyphenyl)ethyl]acetamide853896-58-9C21H21NO5
- Ethyl 3-(4-isopropoxybenzamido)benzofuran-2-carboxylate847405-76-9C21H21NO5
- N-(3-Butoxyphenyl)-6-methoxy-2-oxo-2H-chromene-3-carboxamide324778-19-0C21H21NO5
- 5H-Dibenzo(a,c)cyclohepten-5-one, 7-(3-(methylamino)propyl)-, ethanedioate (1:1)93696-98-1C21H21NO5
- Benzyl (7,8-dimethoxy-2-oxo-1,2-dihydro-3H-3-benzazepin-3-yl)acetate1574307-85-9C21H21NO5
- N-(4-(Benzo[d][1,3]dioxol-5-yloxy)but-2-yn-1-yl)-4-isopropoxybenzamide1428348-65-5C21H21NO5
- 1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-3-hydroxypiperidine-2-carboxylic acid, mixture of diastereomers317384-34-2C21H21NO5
- 2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-(prop-2-en-1-yloxy)propanoic acid2407931-71-7C21H21NO5
- 2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-2-(oxolan-2-yl)acetic acid1698780-10-7C21H21NO5
- 2-[({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolane-3-carboxylic acid2138006-09-2C21H21NO5
- 2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}(methyl)amino)-2-(oxetan-3-yl)acetic acid2260933-01-3C21H21NO5
- 2-({[(9H-Fluoren-9-ylmethoxy)carbonyl]amino}methyl)oxolane-2-carboxylic acid2287311-12-8C21H21NO5
- Hypoxystat2414508-40-8C21H21NO5
- (2R,5S)-5-[({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolane-2-carboxylic acid779358-57-5C21H21NO5
- Diethyl[10-(hydroxyimino)-9,10-dihydroanthracen-9-yl]propanedioate29925-32-4C21H21NO5
- Diethyl(6-oxo-6,11-dihydro-5H-dibenzo[b,e]azepin-11-yl)propanedioate37387-64-7C21H21NO5
- Ethyl 5-(acetyloxy)-1-(4-methoxyphenyl)-2-methyl-1H-indole-3-carboxylate54568-96-6C21H21NO5
- 2-{[4-(4-Methoxyphenyl)-7-methyl-2-oxo-2H-chromen-5-yl]oxy}-N,N-dimethylacetamide500204-64-8C21H21NO5
- N-[(7-Hydroxy-2-oxo-4-phenyl-2H-chromen-8-yl)methyl]norvaline1396963-61-3C21H21NO5
- Benzyl (1R*,2R*,3R*,5S*)-2-(benzyloxycarbonylamino)-6-oxa-bicyclo[3.1.0]hexane-3-carboxylate959745-78-9C21H21NO5
- Methyl 6,7-dimethoxy-4-[(2-methylphenyl)methoxy]quinoline-2-carboxylate1358504-92-3C21H21NO5
- Ethyl 2-[(6,7-dimethoxy-4-quinolyl)oxy]-6-methylbenzoate666730-08-1C21H21NO5
- Ethyl 2-[(6,7-dimethoxy-4-quinolyl)oxy]-5-methylbenzoate666730-03-6C21H21NO5
- Fmoc-(3S)-3-methoxy-L-proline1344157-79-4C21H21NO5
- 7-(4-Methoxy-phenoxy)-4-hydroxy-isoquinoline-3-carboxylic acid butyl ester808115-59-5C21H21NO5
- Methyl 2-(6,7-dimethoxy-1,2-dihydronaphthalene-3-carboxamido)benzoate1295537-16-4C21H21NO5
- 7,8-Dimethoxy-3-[2-(4-methoxyphenyl)-2-oxoethyl]-1,3-dihydro-2H-3-benzazepin-2-one1435994-23-2C21H21NO5
- Methyl 3-[(7,8-dimethoxy-2-oxo-1,2-dihydro-3H-3-benzazepin-3-yl)methyl]benzoate1574392-53-2C21H21NO5
- 2,5-Bis((4-methoxybenzyl)oxy)pyridin-4(1H)-one1632286-00-0C21H21NO5
- 3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}(methyl)amino)oxolane-3-carboxylic acid1695959-63-7C21H21NO5
- 2-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-4-oxohexanoic acid1696292-17-7C21H21NO5
- 1-(9H-Fluoren-9-ylmethoxycarbonyl)-3-(methoxymethyl)azetidine-3-carboxylic acid2361645-33-0C21H21NO5
- (2S,6S)-4-(((9H-Fluoren-9-yl)methoxy)carbonyl)-6-methylmorpholine-2-carboxylic acid2171200-70-5C21H21NO5
- (3R,5R)-4-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-5-methylmorpholine-3-carboxylic acid2227840-94-8C21H21NO5
- (3R,6S)-4-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-6-methylmorpholine-3-carboxylic acid2171291-05-5C21H21NO5
- Methyl 1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxycyclobutane-1-carboxylate2763891-53-6C21H21NO5
- Parfumidine31225-67-9C21H21NO5
- 4-Oxo-6-[(5-phenoxypentyl)oxy]-1,4-dihydroquinoline-3-carboxylic acid35976-00-2C21H21NO5
- 4-Benzoyl-3-hydroxy-5-(4-hydroxyphenyl)-1-(3-methoxypropyl)-2,5-dihydro-1H-pyrrol-2-oneC21H21NO5
- N-Fmoc-D-serine Allyl EsterC21H21NO5
- 4-Cyanophenyl 4-{[(hexyloxy)carbonyl]oxy}benzoate57373-88-3C21H21NO5
- Methyl 6,7-dimethoxy-4-[(4-methylphenyl)methoxy]quinoline-2-carboxylate1358419-26-7C21H21NO5
Frequently asked questions
What is the molar mass of C21H21NO5?
The molar mass of C21H21NO5 is 367.40 g/mol, calculated from standard atomic weights for 21 carbon atoms, 21 hydrogen atoms, 1 nitrogen atom and 5 oxygen atoms. The monoisotopic mass is 370.1608 Da.
How many compounds have the formula C21H21NO5?
CompoundList lists 333 compounds with the molecular formula C21H21NO5, including (3S,6S)-4-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-6-methylmorpholine-3-carboxylic acid, 2-(3-Methoxyphenyl)-2-oxoethyl 1-benzyl-5-oxo-3-pyrrolidinecarboxylate, (4E)-4-[Hydroxy-(4-methoxyphenyl)methylidene]-1-(3-hydroxypropyl)-5-phenylpyrrolidine-2,3-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 C21H21NO5?
C21H21NO5 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.