Molecular formula
C21H26N4O3
186 compounds have this formula on CompoundList.
- Molar mass
- 382.46g/mol
- Monoisotopic mass
- 387.2319Da
- Atoms
- 54
- Elements
- 4
- Rings plus double bonds
- 11
The formula C21H26N4O3 describes a molecule made of 21 carbon atoms, 26 hydrogen atoms, 4 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 × 2165.95%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 266.85%1.008 × 26 = 26.208 g/mol
- N Nitrogen × 414.65%14.007 × 4 = 56.028 g/mol
- O Oxygen × 312.55%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C21H26N4O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 186 compounds
6-(4-Methyl-1-piperazinyl)-2-(3,4,5-trimethoxyphenyl)-1H-benzimidazole
CAS 685106-70-1C21H26N4O3
N-(2,6-Di-4-morpholinyl-3-pyridinyl)-4-methylbenzamide
CAS 259683-31-3C21H26N4O3
![1-[1-(2-Keto-2-pyrrolidino-ethyl)indol-3-yl]-2-(4-methylpiperazino)ethane-1,2-dione chemical structure, C21H26N4O3, CAS 893988-38-0](/s/WDHVZBGDFAICJO-UHFFFAOYSA-N.svg)
1-[1-(2-Keto-2-pyrrolidino-ethyl)indol-3-yl]-2-(4-methylpiperazino)ethane-1,2-dione
CAS 893988-38-0C21H26N4O3
![3-Methoxy-N'-[3-(4-phenylpiperazin-1-yl)propanoyl]benzohydrazide chemical structure, C21H26N4O3, CAS 771506-93-5](/s/XIRQXJPTUNGKPZ-UHFFFAOYSA-N.svg)
3-Methoxy-N'-[3-(4-phenylpiperazin-1-yl)propanoyl]benzohydrazide
CAS 771506-93-5C21H26N4O3
N1-cyclopropyl-N2-(2-(furan-2-yl)-2-(4-phenylpiperazin-1-yl)ethyl)oxalamide
CAS 877631-85-1C21H26N4O3
Vapendavir
CAS 439085-51-5C21H26N4O3
![N-(1-Cyanocyclopentyl)-2-{4-methyl-2,5-dioxo-4-[4-(propan-2-yl)phenyl]imidazolidin-1-yl}acetamide chemical structure, C21H26N4O3, CAS 956517-38-7](/s/RYWRFOYWVUBKAQ-UHFFFAOYSA-N.svg)
N-(1-Cyanocyclopentyl)-2-{4-methyl-2,5-dioxo-4-[4-(propan-2-yl)phenyl]imidazolidin-1-yl}acetamide
CAS 956517-38-7C21H26N4O3
N-(2-(2-(4-(Dimethylamino)benzylidene)hydrazino)-2-oxoethyl)-4-propoxybenzamide
CAS 769147-78-6C21H26N4O3
Metonitazene
CAS 14680-51-4C21H26N4O3
![7-(4-Methoxyphenyl)-2-{[2-(morpholin-4-yl)ethyl]amino}-7,8-dihydroquinazolin-5(6H)-one chemical structure, C21H26N4O3, CAS 669750-39-4](/s/DIAUKCZAKOJPEL-UHFFFAOYSA-N.svg)
7-(4-Methoxyphenyl)-2-{[2-(morpholin-4-yl)ethyl]amino}-7,8-dihydroquinazolin-5(6H)-one
CAS 669750-39-4C21H26N4O3
N-(4-((2-(Cyclohex-1-en-1-yl)ethyl)carbamoyl)phenyl)-3-methoxy-1-methyl-1H-pyrazole-4-carboxamide
CAS 1207000-02-9C21H26N4O3
![2-(2-Cyclopentylethyl)-7-(3,4,5-trimethoxyphenyl)[1,2,4]triazolo[1,5-a]pyrimidine chemical structure, C21H26N4O3, CAS 1574337-83-9](/s/YJHRUJGGHSLBHZ-UHFFFAOYSA-N.svg)
2-(2-Cyclopentylethyl)-7-(3,4,5-trimethoxyphenyl)[1,2,4]triazolo[1,5-a]pyrimidine
CAS 1574337-83-9C21H26N4O3
![3-(2-(4-((2-Isopropyl-1H-imidazol-1-yl)methyl)piperidin-1-yl)-2-oxoethyl)benzo[d]oxazol-2(3H)-one chemical structure, C21H26N4O3, CAS 1334368-87-4](/s/YOMMPEJCJCBWTB-UHFFFAOYSA-N.svg)
3-(2-(4-((2-Isopropyl-1H-imidazol-1-yl)methyl)piperidin-1-yl)-2-oxoethyl)benzo[d]oxazol-2(3H)-one
CAS 1334368-87-4C21H26N4O3
N-Desethylisotonitazene
CAS 2732926-24-6C21H26N4O3
1H-Purine-2,6-dione, 3,7-dihydro-1,3-dipropyl-8-(2-(4-methoxyphenyl)ethenyl)-7-methyl-, (E)-
CAS 141807-94-5C21H26N4O3
![[4-[3-(Ethylamino)-4-nitrophenyl]piperazin-1-yl]-(4-ethylphenyl)methanone chemical structure, C21H26N4O3, CAS 709001-75-2](/s/INDZNFYWJKSYQF-UHFFFAOYSA-N.svg)
[4-[3-(Ethylamino)-4-nitrophenyl]piperazin-1-yl]-(4-ethylphenyl)methanone
CAS 709001-75-2C21H26N4O3
![2-(3-Cyclohexyl-2,4-dioxo-2,3,4,5,6,7-hexahydro-1H-cyclopenta[d]pyrimidin-1-yl)-N-(pyridin-3-ylmethyl)acetamide chemical structure, C21H26N4O3, CAS 1018156-64-3](/s/HTCAZYONYNTQAZ-UHFFFAOYSA-N.svg)
2-(3-Cyclohexyl-2,4-dioxo-2,3,4,5,6,7-hexahydro-1H-cyclopenta[d]pyrimidin-1-yl)-N-(pyridin-3-ylmethyl)acetamide
CAS 1018156-64-3C21H26N4O3
![4-{1-[6-(4-Methoxyphenyl)pyridazin-3-yl]piperidine-3-carbonyl}morpholine chemical structure, C21H26N4O3, CAS 1105231-37-5](/s/GDLFLNRRHFSJAT-UHFFFAOYSA-N.svg)
4-{1-[6-(4-Methoxyphenyl)pyridazin-3-yl]piperidine-3-carbonyl}morpholine
CAS 1105231-37-5C21H26N4O3
LY 320954
CAS 182633-59-6C21H26N4O3
![N-Butyl-2-{2-[(2-furylcarbonylamino)ethyl]benzimidazolyl}-N-methylacetamide chemical structure, C21H26N4O3, CAS 919973-60-7](/s/IHHGVXHVDIZQPM-UHFFFAOYSA-N.svg)
N-Butyl-2-{2-[(2-furylcarbonylamino)ethyl]benzimidazolyl}-N-methylacetamide
CAS 919973-60-7C21H26N4O3
![2-(3,4-Dimethoxyphenyl)-3,5-dimethyl-N-(tetrahydrofuran-2-ylmethyl)pyrazolo[1,5-a]pyrimidin-7-amine chemical structure, C21H26N4O3, CAS 1015543-98-2](/s/VIWXKFAPHUBOED-UHFFFAOYSA-N.svg)
2-(3,4-Dimethoxyphenyl)-3,5-dimethyl-N-(tetrahydrofuran-2-ylmethyl)pyrazolo[1,5-a]pyrimidin-7-amine
CAS 1015543-98-2C21H26N4O3
![4-{[1-Methyl-3-(piperidin-1-ylcarbonyl)-1,4,6,7-tetrahydro-5H-pyrazolo[4,3-c]pyridin-5-yl]methyl}benzoic acid chemical structure, C21H26N4O3, CAS 1142210-27-2](/s/NGBKFVGYXMDZGZ-UHFFFAOYSA-N.svg)
4-{[1-Methyl-3-(piperidin-1-ylcarbonyl)-1,4,6,7-tetrahydro-5H-pyrazolo[4,3-c]pyridin-5-yl]methyl}benzoic acid
CAS 1142210-27-2C21H26N4O3
![N-(1-(1H-Benzo[d][1,2,3]triazol-1-yl)-2,2-dimethylpropyl)-2-(3,4-dimethoxyphenyl)acetamide chemical structure, C21H26N4O3, CAS 861393-66-0](/s/BJNHQGKLOLJVOT-UHFFFAOYSA-N.svg)
N-(1-(1H-Benzo[d][1,2,3]triazol-1-yl)-2,2-dimethylpropyl)-2-(3,4-dimethoxyphenyl)acetamide
CAS 861393-66-0C21H26N4O3
![2-{4-[(3,5,6-Trimethylpyrazin-2-yl)methyl]piperazine-1-carbonyl}phenyl acetate chemical structure, C21H26N4O3, CAS 892495-05-5](/s/VOSIZJZNQQLYAQ-UHFFFAOYSA-N.svg)
2-{4-[(3,5,6-Trimethylpyrazin-2-yl)methyl]piperazine-1-carbonyl}phenyl acetate
CAS 892495-05-5C21H26N4O3
- 2-[3-[4-(Cyclopentanecarbonyl)piperazin-1-yl]-3-oxopropyl]-3H-quinazolin-4-one1537890-81-5C21H26N4O3
- 6-Amino-3-tert-butyl-4-(4-isopropoxy-3-methoxyphenyl)-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile385389-23-1C21H26N4O3
- 6-Amino-4-(3-ethoxy-4-propan-2-yloxyphenyl)-3-propyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile445266-06-8C21H26N4O3
- 7-Benzyl-1,3-dimethyl-N-(3-methylbutyl)-2,4-dioxo-2,3,4,7-tetrahydro-1H-pyrrolo[2,3-d]pyrimidine-6-carboxamide1021257-73-7C21H26N4O3
- 1-(2-Methoxyphenyl)-4-(2-nitro-5-pyrrolidin-1-ylphenyl)piperazine430453-64-8C21H26N4O3
- 4-Methyl-1-piperazineacetic acid 2-(hydroxydiphenylacetyl)hydrazide128156-85-4C21H26N4O3
- 6-Amino-3-tert-butyl-4-(3-methoxy-4-propoxyphenyl)-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile385394-98-9C21H26N4O3
- 3-(3,4-Dimethoxyphenyl)-2,5-dimethyl-N-(tetrahydrofuran-2-ylmethyl)pyrazolo[1,5-a]pyrimidin-7-amine902008-66-6C21H26N4O3
- 2-[(E)-2-(4-Ethoxyphenyl)ethenyl]-5-(3-morpholin-4-ylpropylamino)-1,3-oxazole-4-carbonitrile882244-63-5C21H26N4O3
- N-(3-Acetylphenyl)-2-{[6-methyl-2-(4-methylpiperidin-1-yl)pyrimidin-4-yl]oxy}acetamide1226444-07-0C21H26N4O3
- Oxayohimban-16-carboxylic acid, 16,17-didehydro-10-methoxy-19-methyl-, hydrazide, (19-alpha)-72407-38-6C21H26N4O3
- 1H-Purine-2,6-dione, 3,7-dihydro-1,3-dipropyl-8-(2-(4-ethoxyphenyl)ethenyl)-, (E)-151539-41-2C21H26N4O3
- 7-Butyl-1,3-dimethyl-2,4-dioxo-N-phenethyl-2,3,4,7-tetrahydro-1H-pyrrolo[2,3-d]pyrimidine-6-carboxamide1021134-03-1C21H26N4O3
- 2-(3-Cyclopropyl-5-(pyrrolidine-1-carbonyl)-1H-pyrazol-1-yl)-N-(2-ethoxyphenyl)acetamide1251671-59-6C21H26N4O3
- 1-(4-{4-Nitro-3-[(2-phenylethyl)amino]phenyl}piperazin-1-yl)propan-1-one433327-68-5C21H26N4O3
- 1-[4-[4-Nitro-3-(1-phenylethylamino)phenyl]piperazin-1-yl]propan-1-one433702-89-7C21H26N4O3
- 1-(3-Methoxypropyl)-9-methyl-2-(piperidine-1-carbonyl)pyrido[1,2-a]pyrrolo[2,3-d]pyrimidin-4(1H)-one900296-48-2C21H26N4O3
- 1-(3-Methoxypropyl)-2-(4-methylpiperidine-1-carbonyl)pyrido[1,2-a]pyrrolo[2,3-d]pyrimidin-4(1H)-one902007-26-5C21H26N4O3
- 2-(Azepane-1-carbonyl)-1-(3-methoxypropyl)pyrido[1,2-a]pyrrolo[2,3-d]pyrimidin-4(1H)-one902035-14-7C21H26N4O3
- 1H-Purine-2,6-dione, 3,7-dihydro-1,3-diethyl-8-(2-(2,3-dimethyl-4-methoxy)phenyl)ethenyl)-7-methyl-, (E)-155271-07-1C21H26N4O3
- Methyl 1-(2-(cyclopentylamino)-2-oxoethyl)-3,6-dicyclopropyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylate1018051-53-0C21H26N4O3
- N-(4-Isopropylphenyl)-1,3-dimethyl-2,4-dioxo-7-propyl-2,3,4,7-tetrahydro-1H-pyrrolo[2,3-d]pyrimidine-6-carboxamide1021059-50-6C21H26N4O3
- N1-(3-methoxybenzyl)-N2-((1-(pyridin-2-yl)piperidin-4-yl)methyl)oxalamide1235007-01-8C21H26N4O3
- 4-{4-[(1H-Imidazol-1-yl)methyl]piperidine-1-carbonyl}-1-(3-methoxyphenyl)pyrrolidin-2-one1286697-89-9C21H26N4O3
- 2-(1,3-Dioxo-2-azaspiro[4.4]non-2-yl)-N-[(1-isopropyl-1H-1,3-benzimidazol-2-yl)methyl]acetamide1401573-94-1C21H26N4O3
- 1-(2-Ethoxyphenyl)-3-((1-isonicotinoylpiperidin-4-yl)methyl)urea1396849-36-7C21H26N4O3
- 1-[4-(4-Cyclopropyl-1-methyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-3-yl)piperidin-1-yl]-4-phenylbutane-1,4-dione1798023-28-5C21H26N4O3
- 5-Isopropyl-2,2-dimethyl-8-morpholino-2,4-dihydro-1H-pyrano[4'',3'':4',5']pyrido[3',2':4,5]furo[3,2-d]pyrimidine899397-43-4C21H26N4O3
- [4-[3-(2-Methylpropylamino)-4-nitrophenyl]piperazin-1-yl]-phenylmethanone774549-80-3C21H26N4O3
- 2,4-Imidazolidinedione, 3-(3-(dimethylamino)-2-methylpropyl)-5-(4-methoxyphenyl)-5-(3-pyridinyl)-54743-04-3C21H26N4O3
- 7-(2,4-Dimethoxyphenyl)-2-(4-methylpiperazin-1-yl)-7,8-dihydroquinazolin-5(6H)-one879063-55-5C21H26N4O3
- 1-(3-Methoxypropyl)-2-(2-methylpiperidine-1-carbonyl)pyrido[1,2-a]pyrrolo[2,3-d]pyrimidin-4(1H)-one900264-63-3C21H26N4O3
- 2-[[2-[4-(2-Ethoxyphenyl)piperazin-1-yl]acetyl]amino]benzamide885437-54-7C21H26N4O3
- 2-[4-(2-Hydroxyethyl)piperazin-1-yl]-7-(2-hydroxyphenyl)-4-methyl-7,8-dihydro-6H-quinazolin-5-one886141-15-7C21H26N4O3
- 2-[4-(2-Hydroxyethyl)piperazin-1-yl]-7-(4-methoxyphenyl)-7,8-dihydro-6H-quinazolin-5-one886140-59-6C21H26N4O3
- N-(2-(1H-Indol-3-yl)ethyl)-2-(1-methyl-2,4-dioxo-1,3-diazaspiro[4.5]decan-3-yl)acetamide923863-37-0C21H26N4O3
- N1-allyl-N2-(2-(furan-2-yl)-2-(4-phenylpiperazin-1-yl)ethyl)oxalamide877631-34-0C21H26N4O3
- N-(3-Nitrophenyl)-4-[4-(propan-2-yl)benzyl]piperazine-1-carboxamide908494-51-9C21H26N4O3
- N-{2-[4-(Dimethylamino)phenyl]-2-(pyrrolidin-1-yl)ethyl}-3-nitrobenzamide897620-05-2C21H26N4O3
- N-(4-Acetylphenyl)-2-{[6-methyl-2-(4-methylpiperidin-1-yl)pyrimidin-4-yl]oxy}acetamide1226428-48-3C21H26N4O3
- N-(3-Acetylphenyl)-2-{[2-(azepan-1-yl)-6-methylpyrimidin-4-yl]oxy}acetamide1226435-47-7C21H26N4O3
- N-(4-Acetylphenyl)-2-{[2-(azepan-1-yl)-6-methylpyrimidin-4-yl]oxy}acetamide1226451-09-7C21H26N4O3
- 1-(4-Butoxyphenyl)-3-[2-(3-oxopiperazin-1-yl)phenyl]urea1226447-90-0C21H26N4O3
- 2-{2-[4-(4-Methoxyphenyl)piperazino]-2-oxoethyl}-5,6,7,8-tetrahydro-3(2H)-cinnolinone1282098-62-7C21H26N4O3
- 2-{2-[4-(2-Methoxyphenyl)piperazino]-2-oxoethyl}-5,6,7,8-tetrahydro-3(2H)-cinnolinone1282126-37-7C21H26N4O3
- 2-{2-[4-(3-Methoxyphenyl)piperazino]-2-oxoethyl}-5,6,7,8-tetrahydro-3(2H)-cinnolinone1324066-55-8C21H26N4O3
- 4-(Morpholin-4-yl)-N-[(1r,4r)-4-(pyrazin-2-yloxy)cyclohexyl]benzamide2034579-93-4C21H26N4O3
- 4-(Morpholin-4-yl)-N-[(1r,4r)-4-(pyrimidin-2-yloxy)cyclohexyl]benzamide2034445-26-4C21H26N4O3
- 1-(3-Methoxypropyl)-2-(3-methylpiperidine-1-carbonyl)pyrido[1,2-a]pyrrolo[2,3-d]pyrimidin-4(1H)-one900900-30-3C21H26N4O3
- N-Cyclohexyl-1-(3-methoxypropyl)-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide902010-74-6C21H26N4O3
- 2-Methoxyethyl cyano[3-(3,5-dimethylpiperidin-1-yl)quinoxalin-2-yl]acetate1005261-85-7C21H26N4O3
- 1H-Purine-2,6-dione, 3,7-dihydro-8-(2-(4-butoxyphenyl)ethenyl)-1,3-diethyl-, (E)-155271-34-4C21H26N4O3
- 1-[(5-Methyl-3-phenylisoxazol-4-yl)carbonyl]-4-(2-oxo-2-pyrrolidin-1-ylethyl)piperazine924065-56-5C21H26N4O3
- 2-(4-Methylpiperazin-1-yl)-4-oxo-4-((4-(phenylamino)phenyl)amino)butanoic acid899964-31-9C21H26N4O3
- (1-(6-(4-Methoxyphenyl)pyridazin-3-yl)piperidin-4-yl)(morpholino)methanone1203333-25-8C21H26N4O3
- N~4~-(3,4-dimethoxybenzyl)-6-isopropyl-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-4-carboxamide1042844-76-7C21H26N4O3
- N-(2,4-Dimethoxyphenyl)-1,6-bis(propan-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxamide1035834-68-4C21H26N4O3
- N-{2-[(4-Methoxybenzyl)amino]-2-oxoethyl}-4-phenylpiperazine-1-carboxamide1324085-31-5C21H26N4O3
- N1-(2-ethoxyphenyl)-N2-((1-(pyridin-2-yl)piperidin-4-yl)methyl)oxalamide1235642-91-7C21H26N4O3
- N-(2-Methoxybenzyl)-4-oxo-4-(4-(pyridin-2-yl)piperazin-1-yl)butanamide1232790-22-5C21H26N4O3
- N-{2-[(2-Methoxybenzyl)amino]-2-oxoethyl}-4-phenylpiperazine-1-carboxamide1324089-45-3C21H26N4O3
- 4-Benzyl-N-{2-[(4-methoxyphenyl)amino]-2-oxoethyl}piperazine-1-carboxamide1401598-40-0C21H26N4O3
- 4-Benzyl-N-{2-[(2-methoxyphenyl)amino]-2-oxoethyl}piperazine-1-carboxamide1401600-49-4C21H26N4O3
- 1-(4-Ethoxyphenyl)-3-((1-nicotinoylpiperidin-4-yl)methyl)urea1396808-56-2C21H26N4O3
- 4-(4-Hydroxy-6-methyl-2-oxopyridin-1(2H)-yl)-N-[3-(1-methyl-1H-benzimidazol-2-yl)propyl]butanamide1676097-19-0C21H26N4O3
- (4-(Pyridin-3-ylmethyl)piperazin-1-yl)(2-((tetrahydro-2H-pyran-4-yl)oxy)pyridin-4-yl)methanone2034363-32-9C21H26N4O3
- 2-[(2,2-Dimethyl-2,3-dihydro-1-benzofuran-7-yl)oxy]-1-[3-(1H-1,2,4-triazol-1-yl)-8-azabicyclo[3.2.1]octan-8-yl]ethan-1-one2310153-76-3C21H26N4O3
- N-desethyl Protonitazene3053113-11-1C21H26N4O3
- Benzamide, 4-[(4-nitrophenyl)azo]-N-pentyl-N-propyl-55401-78-0C21H26N4O3
- 1H-Purine-2,6-dione, 3,7-dihydro-1,3-diethyl-7-methyl-8-(2-(4-propoxyphenyl)ethenyl)-, (E)-155271-31-1C21H26N4O3
- 2-[[2-[4-[(3-Methoxyphenyl)methyl]piperazin-1-yl]acetyl]amino]benzamide890578-66-2C21H26N4O3
- 1-(2-(Benzo[d][1,3]dioxol-5-yl)-2-(4-methylpiperazin-1-yl)ethyl)-3-phenylurea896335-25-4C21H26N4O3
- 2-(2-(5-Butyl-1,3,4-oxadiazol-2-yl)-1H-indol-1-yl)-N-((tetrahydrofuran-2-yl)methyl)acetamide955601-32-8C21H26N4O3
- N-{2-[4-(Dimethylamino)phenyl]-2-(pyrrolidin-1-yl)ethyl}-4-nitrobenzamide941949-22-0C21H26N4O3
- 5-Ethyl-N-(3-isopropoxypropyl)-3-oxo-2-phenyl-3,5-dihydro-2H-pyrazolo[4,3-c]pyridine-7-carboxamide921513-79-3C21H26N4O3
- N-Cycloheptyl-2-{4-[(1H-indol-3-yl)methyl]-2,5-dioxoimidazolidin-1-yl}acetamide1206085-56-4C21H26N4O3
Frequently asked questions
What is the molar mass of C21H26N4O3?
The molar mass of C21H26N4O3 is 382.46 g/mol, calculated from standard atomic weights for 21 carbon atoms, 26 hydrogen atoms, 4 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 387.2319 Da.
How many compounds have the formula C21H26N4O3?
CompoundList lists 186 compounds with the molecular formula C21H26N4O3, including 6-(4-Methyl-1-piperazinyl)-2-(3,4,5-trimethoxyphenyl)-1H-benzimidazole, N-(2,6-Di-4-morpholinyl-3-pyridinyl)-4-methylbenzamide, 1-[1-(2-Keto-2-pyrrolidino-ethyl)indol-3-yl]-2-(4-methylpiperazino)ethane-1,2-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 C21H26N4O3?
C21H26N4O3 has a degree of unsaturation of 11. 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.