Molecular formula
C21H21N3O5
176 compounds have this formula on CompoundList.
- Molar mass
- 395.42g/mol
- Monoisotopic mass
- 399.1732Da
- Atoms
- 50
- Elements
- 4
- Rings plus double bonds
- 13
The formula C21H21N3O5 describes a molecule made of 21 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms 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 × 2163.79%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 215.35%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 310.63%14.007 × 3 = 42.021 g/mol
- O Oxygen × 520.23%15.999 × 5 = 79.995 g/mol
Look up another formula
Compounds with the formula C21H21N3O5
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 176 of 176 compounds
![N-(2-Ethoxyphenyl)-2-[4-(3-methoxyphenyl)-2,3-dioxo-1,2,3,4-tetrahydropyrazin-1-yl]acetamide chemical structure, C21H21N3O5, CAS 891867-66-6](/s/NVFNPUFYLZBVGH-UHFFFAOYSA-N.svg)
N-(2-Ethoxyphenyl)-2-[4-(3-methoxyphenyl)-2,3-dioxo-1,2,3,4-tetrahydropyrazin-1-yl]acetamide
CAS 891867-66-6C21H21N3O5
![Methyl 4-[2-amino-3-cyano-6-(2-methoxyethyl)-7-methyl-5-oxo-4H,5H,6H-pyrano[3,2-c]pyridin-4-yl]benzoate chemical structure, C21H21N3O5, CAS 883511-49-7](/s/OPBJKIJAGQXFNS-UHFFFAOYSA-N.svg)
Methyl 4-[2-amino-3-cyano-6-(2-methoxyethyl)-7-methyl-5-oxo-4H,5H,6H-pyrano[3,2-c]pyridin-4-yl]benzoate
CAS 883511-49-7C21H21N3O5
2-(5-((4-Methoxyphenoxy)methyl)furan-2-yl)-5-(((tetrahydrofuran-2-yl)methyl)amino)oxazole-4-carbonitrile
CAS 946278-54-2C21H21N3O5
![N-{[6-(Benzyloxy)-1H-indol-1-yl]acetyl}glycylglycine chemical structure, C21H21N3O5, CAS 1219566-07-0](/s/MWRRAVDBABLHAN-UHFFFAOYSA-N.svg)
N-{[6-(Benzyloxy)-1H-indol-1-yl]acetyl}glycylglycine
CAS 1219566-07-0C21H21N3O5
![N-{[5-(Benzyloxy)-1H-indol-1-yl]acetyl}glycylglycine chemical structure, C21H21N3O5, CAS 1219546-92-5](/s/XNRTYZZLGGDDFR-UHFFFAOYSA-N.svg)
N-{[5-(Benzyloxy)-1H-indol-1-yl]acetyl}glycylglycine
CAS 1219546-92-5C21H21N3O5
![N-(3,4-Dimethoxyphenyl)-4-methyl-1,5-dioxo-2,3,4,5-tetrahydropyrrolo[1,2-a]quinazoline-3a(1H)-carboxamide chemical structure, C21H21N3O5, CAS 1236257-49-0](/s/YWSHJNTUXMUWCV-UHFFFAOYSA-N.svg)
N-(3,4-Dimethoxyphenyl)-4-methyl-1,5-dioxo-2,3,4,5-tetrahydropyrrolo[1,2-a]quinazoline-3a(1H)-carboxamide
CAS 1236257-49-0C21H21N3O5
2-(2-(6,7-Dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)-2-oxoethyl)-6-(furan-2-yl)pyridazin-3(2H)-one
CAS 1282098-48-9C21H21N3O5
![N-[3-(2-Methoxyethyl)-4-oxo-3,4-dihydroquinazolin-6-yl]-3,4-dihydro-2H-1,5-benzodioxepine-7-carboxamide chemical structure, C21H21N3O5, CAS 1574378-18-9](/s/YCYBDKIHBFHVBT-UHFFFAOYSA-N.svg)
N-[3-(2-Methoxyethyl)-4-oxo-3,4-dihydroquinazolin-6-yl]-3,4-dihydro-2H-1,5-benzodioxepine-7-carboxamide
CAS 1574378-18-9C21H21N3O5
3-Cyclopropyl-5-(1-(naphthalen-1-ylmethyl)azetidin-3-yl)-1,2,4-oxadiazole oxalate
CAS 1396749-15-7C21H21N3O5
![(E)-Ethyl 5-(3-(3,4-dimethoxyphenyl)acrylamido)pyrazolo[1,5-a]pyridine-3-carboxylate chemical structure, C21H21N3O5, CAS 1396892-04-8](/s/NTXAVNJINRDCFY-SOFGYWHQSA-N.svg)
(E)-Ethyl 5-(3-(3,4-dimethoxyphenyl)acrylamido)pyrazolo[1,5-a]pyridine-3-carboxylate
CAS 1396892-04-8C21H21N3O5
2(3H)-Benzoxazolone, 3-((2-methyl-1-piperidinyl)methyl)-6-(4-nitrobenzoyl)-
CAS 99541-47-6C21H21N3O5
![3-Butoxy-N-[5-(2,3-dihydro-1,4-benzodioxin-6-yl)-1,3,4-oxadiazol-2-yl]benzamide chemical structure, C21H21N3O5, CAS 862808-49-9](/s/ZQBVBSDFPRNXAO-UHFFFAOYSA-N.svg)
3-Butoxy-N-[5-(2,3-dihydro-1,4-benzodioxin-6-yl)-1,3,4-oxadiazol-2-yl]benzamide
CAS 862808-49-9C21H21N3O5
N-(Furan-2-ylmethyl)-2-(1-(2-morpholino-2-oxoethyl)-1H-indol-3-yl)-2-oxoacetamide
CAS 872856-96-7C21H21N3O5
N-(2,3-Dihydro-1,4-benzodioxin-6-yl)-2-(2,4-dioxo-1H-quinazolin-3-yl)-3-methylbutanamide
CAS 939896-31-8C21H21N3O5
(S)-2-(2-(((Benzyloxy)carbonyl)amino)-3-(1H-indol-3-yl)propanamido)acetic acid
C21H21N3O5
3-(4-Ethoxyphenyl)-N-(2-methoxy-5-methylphenyl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carboxamide
CAS 887898-01-3C21H21N3O5
N-(3,5-Dimethoxyphenyl)-3-(3,4-dimethylphenyl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carboxamide
CAS 887898-24-0C21H21N3O5
N'-(1-Acetyl-3,4-dihydro-2H-quinolin-7-yl)-N-(1,3-benzodioxol-5-ylmethyl)oxamide
CAS 898439-58-2C21H21N3O5
N-(1-Acetyl-3,4-dihydro-2H-quinolin-7-yl)-N'-(2,3-dihydro-1,4-benzodioxin-6-yl)oxamide
CAS 898466-28-9C21H21N3O5
N-(2,4-Dimethoxyphenyl)-4-methoxy-1-(2-methylphenyl)-6-oxopyridazine-3-carboxamide
CAS 941944-45-2C21H21N3O5
N-(2,5-Dimethoxyphenyl)-4-methoxy-1-(2-methylphenyl)-6-oxopyridazine-3-carboxamide
CAS 941900-01-2C21H21N3O5
N-(3,4-Dimethoxyphenyl)-4-methoxy-1-(2-methylphenyl)-6-oxopyridazine-3-carboxamide
CAS 942004-70-8C21H21N3O5
N-(3,5-Dimethoxyphenyl)-4-methoxy-1-(2-methylphenyl)-6-oxopyridazine-3-carboxamide
CAS 941969-32-0C21H21N3O5
N-(2,4-Dimethoxyphenyl)-4-methoxy-1-(4-methylphenyl)-6-oxopyridazine-3-carboxamide
CAS 941969-42-2C21H21N3O5
- N-(2,5-Dimethoxyphenyl)-4-methoxy-1-(4-methylphenyl)-6-oxopyridazine-3-carboxamide942005-09-6C21H21N3O5
- N-(3,4-Dimethoxyphenyl)-4-methoxy-1-(4-methylphenyl)-6-oxopyridazine-3-carboxamide941926-95-0C21H21N3O5
- N-(3,5-Dimethoxyphenyl)-4-methoxy-1-(4-methylphenyl)-6-oxopyridazine-3-carboxamide941969-50-2C21H21N3O5
- N1-(3,4-dimethoxyphenyl)-N2-(4-oxo-2,4,5,6-tetrahydro-1H-pyrrolo[3,2,1-ij]quinolin-8-yl)oxalamide898462-36-7C21H21N3O5
- 4-[3-(2,3-Dimethoxyphenyl)-1,2,4-oxadiazol-5-yl]-1-(4-methoxyphenyl)pyrrolidin-2-one941917-94-8C21H21N3O5
- 2-(8-(((4-Methoxyphenyl)amino)methyl)-7-oxo-2,3-dihydro-[1,4]dioxino[2,3-g]quinolin-6(7H)-yl)acetamide932359-40-5C21H21N3O5
- 1-(Benzo[d][1,3]dioxol-5-yl)-3-((3,4-dimethoxyphenethyl)amino)pyrazin-2(1H)-one941935-04-2C21H21N3O5
- 2-[4-(3,4-Dimethoxyphenyl)-2,3-dioxo-1,2,3,4-tetrahydropyrazin-1-yl]-N-(3-methylphenyl)acetamide891868-44-3C21H21N3O5
- N-[3-(1,3-Benzodioxol-5-ylamino)-3-oxopropyl]-5-methoxy-1-methyl-1H-indole-2-carboxamide1010914-66-5C21H21N3O5
- N-[3-(2,3-Dihydro-1,4-benzodioxin-6-ylamino)-3-oxopropyl]-4-methoxy-1H-indole-2-carboxamide1010927-72-6C21H21N3O5
- N-{2-[(1,3-Benzodioxol-5-ylcarbonyl)amino]ethyl}-5-oxo-1-phenylpyrrolidine-3-carboxamide1040692-23-6C21H21N3O5
- N-[4-(Acetylamino)phenyl]-1-(2,3-dihydro-1,4-benzodioxin-6-yl)-5-oxopyrrolidine-3-carboxamide1144465-41-7C21H21N3O5
- N-(3-Acetylphenyl)-3-(6,7-dimethoxy-4-oxoquinazolin-3(4H)-yl)propanamide1190284-75-3C21H21N3O5
- 5-(Furan-2-yl)-N-(4-(2-(4-hydroxypiperidin-1-yl)-2-oxoethyl)phenyl)isoxazole-3-carboxamide1235025-48-5C21H21N3O5
- 4-({1-[3-(3-Methoxyphenyl)-1-methyl-1H-pyrazole-5-carbonyl]azetidin-3-yl}oxy)-6-methyl-2H-pyran-2-one1787880-19-6C21H21N3O5
- N1-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-N2-(2-hydroxy-2-(1-methyl-1H-indol-3-yl)ethyl)oxalamide1705020-71-8C21H21N3O5
- N1-(benzo[d][1,3]dioxol-5-ylmethyl)-N2-(2-hydroxy-2-(1-methyl-1H-indol-5-yl)ethyl)oxalamide2034411-01-1C21H21N3O5
- Methyl 4-(2-((2-hydroxy-2-(1-methyl-1H-indol-5-yl)ethyl)amino)-2-oxoacetamido)benzoate2034441-60-4C21H21N3O5
- N1-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-N2-(2-hydroxy-2-(1-methyl-1H-indol-5-yl)ethyl)oxalamide2034256-44-3C21H21N3O5
- (5-Methyl-3-((2-methyl-2H-indazol-5-yl)carbamoyl)-4-oxo-4,5,6,7-tetrahydrobenzofuran-5-yl)methyl acetate1802180-29-5C21H21N3O5
- N-(2-(4-Cyclopropyl-6-oxopyrimidin-1(6H)-yl)ethyl)-8-ethoxy-2-oxo-2H-chromene-3-carboxamide2034480-25-4C21H21N3O5
- 3-(3-((4,6-Dimethylpyrimidin-2-yl)oxy)pyrrolidine-1-carbonyl)-8-methoxy-2H-chromen-2-one2034295-08-2C21H21N3O5
- 8-Methoxy-3-(3-((2-methylpyrimidin-4-yl)oxy)piperidine-1-carbonyl)-2H-chromen-2-one2034525-22-7C21H21N3O5
- Erlotinib metabolite M17882172-55-6C21H21N3O5
- (1R,2S)-1-[4-(Cyclopropylcarbamamido)benzamido]-4-hydroxy-2,3-dihydro-1H-indene-2-carboxylic acid2731009-52-0C21H21N3O5
- N-(2,5-Dimethoxyphenyl)-3-(3,4-dimethylphenyl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carboxamide863613-30-3C21H21N3O5
- N-(3-Acetylphenyl)-3-[3-(3,4-dimethoxyphenyl)-1,2,4-oxadiazol-5-yl]propanamide879046-90-9C21H21N3O5
- Ethyl (Z)-3-(5-acetyl-7,8-dimethoxy-4H-pyrrolo[1,2-a]quinoxalin-1-yl)-2-cyanoprop-2-enoate56722-06-6C21H21N3O5
- 2-[4-(2-Methoxy-5-methylphenyl)-2,3-dioxopyrazin-1-yl]-N-(2-methoxyphenyl)acetamide898409-28-4C21H21N3O5
- [(1-Cyanocyclohexyl)carbamoyl]methyl 1,3-dioxo-2-(prop-2-en-1-yl)-2,3-dihydro-1H-isoindole-5-carboxylate923816-08-4C21H21N3O5
- 6-Methyl-N-[(E)-(2,4,6-trimethoxyphenyl)methylideneamino]-[1,3]dioxolo[4,5-g]quinolin-8-amine91919-01-6C21H21N3O5
- (Z)-N-(1-(4-Ethoxyphenyl)-5-oxopyrrolidin-3-yl)-3-(4-nitrophenyl)acrylamide896286-55-8C21H21N3O5
- 2-(4-Benzyl-2,3-dioxo-1,2,3,4-tetrahydropyrazin-1-yl)-N-(2,5-dimethoxyphenyl)acetamide931698-25-8C21H21N3O5
- 2-(6-Oxo-3-phenylpyridazin-1(6H)-yl)-N-(3,4,5-trimethoxyphenyl)acetamide1232810-36-4C21H21N3O5
- N1-Cyclobutanecarbonyl-N1-[4-(4-nitrophenoxy)-2-pyridyl]-1-cyclobutanecarboxamide417722-03-3C21H21N3O5
- 1-Piperidineacetamide,N-(2,3-dihydro-2-oxo-6-benzoxazolyl)-4-[(4-hydroxyphenyl)methyl]-a-oxo-496058-13-0C21H21N3O5
- L-Norleucine, phenylmethyl esterC21H21N3O5
- N-(2-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)ethyl)-3-(4-hydroxy-1-oxophthalazin-2(1H)-yl)propanamide930526-61-7C21H21N3O5
- 1-(2,5-Dimethoxyphenyl)-4-[3-(4-methoxyphenyl)-1,2,4-oxadiazol-5-yl]pyrrolidin-2-one946254-49-5C21H21N3O5
- 2-Pyridinecarboxylic acid, 4-[[3,4-dioxo-2-[[(1R)-1-phenylpropyl]amino]-1-cyclobuten-1-yl]amino]-3-methoxy-, methyl ester1255917-96-4C21H21N3O5
- 2,5-Dihydro-2-methyl-5-oxo-1-phenyl-4-[[(phenylmethoxy)carbonyl]amino]-1H-pyrazole-3-propanoic acid1805820-01-2C21H21N3O5
- 3-[6-(N-Boc-amino)naphtho[1,2-d]isoxazol-1-yl]piperidine-2,6-dione2883704-44-5C21H21N3O5
- Benzyl 4-(5-nitro-2-oxoindolin-1-yl)piperidine-1-carboxylate1956341-06-2C21H21N3O5
- 4-[((2R)-Hydroxy-3-phthalimido)propylamine]phenyl-3-morpholinone-d41329838-35-8C21H21N3O5
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 3-[(tert-butylcarbamoyl)amino]-4-methylbenzoate2248356-85-4C21H21N3O5
- 1-Carbamoyl-4-{[(9H-fluoren-9-yl)methoxy]carbonyl}piperazine-2-carboxylic acid2137447-80-2C21H21N3O5
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 3-[methyl({[(2-methylphenyl)carbamoyl]methyl})amino]propanoate2248332-57-0C21H21N3O5
- 5-{[(Benzyloxy)carbonyl]amino}-1-(oxan-2-yl)-1H-indazole-3-carboxylic acid2639450-03-4C21H21N3O5
- 4-{[(Benzyloxy)carbonyl][(2-hydroxyphenyl)methyl]amino}-1-ethyl-1H-pyrazole-3-carboxylic acid2680880-89-9C21H21N3O5
- 1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl 3-[(butylcarbamoyl)amino]-4-methylbenzoate2248292-91-1C21H21N3O5
- 2-[[(2R)-3-(1H-Indol-3-yl)-2-(phenylmethoxycarbonylamino)propanoyl]amino]acetic acidC21H21N3O5
- 2-Anilino-5-[(2S,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-1-phenylpyrimidin-4-one154844-26-5C21H21N3O5
Frequently asked questions
What is the molar mass of C21H21N3O5?
The molar mass of C21H21N3O5 is 395.42 g/mol, calculated from standard atomic weights for 21 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms and 5 oxygen atoms. The monoisotopic mass is 399.1732 Da.
How many compounds have the formula C21H21N3O5?
CompoundList lists 176 compounds with the molecular formula C21H21N3O5, including N-(2-Ethoxyphenyl)-2-[4-(3-methoxyphenyl)-2,3-dioxo-1,2,3,4-tetrahydropyrazin-1-yl]acetamide, Methyl 4-[2-amino-3-cyano-6-(2-methoxyethyl)-7-methyl-5-oxo-4H,5H,6H-pyrano[3,2-c]pyridin-4-yl]benzoate, 2-(5-((4-Methoxyphenoxy)methyl)furan-2-yl)-5-(((tetrahydrofuran-2-yl)methyl)amino)oxazole-4-carbonitrile. 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 C21H21N3O5?
C21H21N3O5 has a degree of unsaturation of 13. 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.