Molecular formula
C20H18N4O3
205 compounds have this formula on CompoundList.
- Molar mass
- 362.39g/mol
- Monoisotopic mass
- 362.1379Da
- Atoms
- 45
- Elements
- 4
- Rings plus double bonds
- 14
The formula C20H18N4O3 describes a molecule made of 20 carbon atoms, 18 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 × 2066.29%12.011 × 20 = 240.220 g/mol
- H Hydrogen × 185.01%1.008 × 18 = 18.144 g/mol
- N Nitrogen × 415.46%14.007 × 4 = 56.028 g/mol
- O Oxygen × 313.24%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C20H18N4O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 205 compounds
![Ethyl 7-(3-hydroxyphenyl)-5-phenyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate chemical structure, C20H18N4O3, CAS 457951-58-5](/s/WRSLSOTXAGNVCZ-UHFFFAOYSA-N.svg)
Ethyl 7-(3-hydroxyphenyl)-5-phenyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate
CAS 457951-58-5C20H18N4O3
1,5-Dimethyl-4-((E)-((E)-3-(4-nitrophenyl)allylidene)amino)-2-phenyl-1H-pyrazol-3(2H)-one
CAS 329934-35-2C20H18N4O3
![N-[4-(4,5-Dicyano-2-morpholin-4-ylphenoxy)phenyl]acetamide chemical structure, C20H18N4O3, CAS 634169-26-9](/s/NTUSZHSPEMQYHY-UHFFFAOYSA-N.svg)
N-[4-(4,5-Dicyano-2-morpholin-4-ylphenoxy)phenyl]acetamide
CAS 634169-26-9C20H18N4O3
![2-[(2-Furylmethyl)amino]-3-{[(2-furylmethyl)imino]methyl}-7-methyl-4H-pyrido[1,2-a]pyrimidin-4-one chemical structure, C20H18N4O3, CAS 1164533-94-1](/s/KTEXKYBTXXEILD-UHFFFAOYSA-N.svg)
2-[(2-Furylmethyl)amino]-3-{[(2-furylmethyl)imino]methyl}-7-methyl-4H-pyrido[1,2-a]pyrimidin-4-one
CAS 1164533-94-1C20H18N4O3
![N-(4-Methylphenyl)-6-oxo-1-[(phenylcarbamoyl)methyl]-1,6-dihydropyridazine-3-carboxamide chemical structure, C20H18N4O3, CAS 933254-10-5](/s/YIBVAIMSKAFAPP-UHFFFAOYSA-N.svg)
N-(4-Methylphenyl)-6-oxo-1-[(phenylcarbamoyl)methyl]-1,6-dihydropyridazine-3-carboxamide
CAS 933254-10-5C20H18N4O3
7-Benzyl-2-(3-methoxyphenoxy)-1-methyl-1,7-dihydro-6H-purin-6-one
CAS 838396-99-9C20H18N4O3
![Ethyl 7-(4-hydroxyphenyl)-5-phenyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate chemical structure, C20H18N4O3, CAS 457951-62-1](/s/GQAMJICNBIIKGD-UHFFFAOYSA-N.svg)
Ethyl 7-(4-hydroxyphenyl)-5-phenyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate
CAS 457951-62-1C20H18N4O3
![Ethyl 4-(3-methyl-6-oxo-4-pyridin-3-yl-2,4-dihydropyrrolo[3,4-c]pyrazol-5-yl)benzoate chemical structure, C20H18N4O3, CAS 587008-48-8](/s/IBBYGPUGAJFHFW-UHFFFAOYSA-N.svg)
Ethyl 4-(3-methyl-6-oxo-4-pyridin-3-yl-2,4-dihydropyrrolo[3,4-c]pyrazol-5-yl)benzoate
CAS 587008-48-8C20H18N4O3
![(E)-N'-(4-Hydroxy-3-methoxybenzylidene)-4,5-dihydro-1H-benzo[g]indazole-3-carbohydrazide chemical structure, C20H18N4O3, CAS 307323-89-3](/s/KSCIEIHGIPQDBQ-SRZZPIQSSA-N.svg)
(E)-N'-(4-Hydroxy-3-methoxybenzylidene)-4,5-dihydro-1H-benzo[g]indazole-3-carbohydrazide
CAS 307323-89-3C20H18N4O3
Egis-8332
CAS 220725-87-1C20H18N4O3
5-Oxo-N-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)-1-phenylpyrrolidine-3-carboxamide
CAS 899985-12-7C20H18N4O3
![N-[3-(4,5-Dicyano-2-morpholin-4-ylphenoxy)phenyl]acetamide chemical structure, C20H18N4O3, CAS 578698-14-3](/s/HIUUBSLLUKNSTG-UHFFFAOYSA-N.svg)
N-[3-(4,5-Dicyano-2-morpholin-4-ylphenoxy)phenyl]acetamide
CAS 578698-14-3C20H18N4O3
7-(Diethylamino)-3-(5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl)-2H-chromen-2-one
CAS 252551-75-0C20H18N4O3
![Ethyl 4-(3-methyl-6-oxo-4-pyridin-2-yl-2,4-dihydropyrrolo[3,4-c]pyrazol-5-yl)benzoate chemical structure, C20H18N4O3, CAS 577696-76-5](/s/SEFIIVNHSQCUJI-UHFFFAOYSA-N.svg)
Ethyl 4-(3-methyl-6-oxo-4-pyridin-2-yl-2,4-dihydropyrrolo[3,4-c]pyrazol-5-yl)benzoate
CAS 577696-76-5C20H18N4O3
2-Phenoxy-N'-(2-phenoxyethanimidoyl)nicotinohydrazide
CAS 337928-90-2C20H18N4O3
![8-([1,1'-Biphenyl]-4-yloxy)-1,3,7-trimethyl-3,7-dihydro-1H-purine-2,6-dione chemical structure, C20H18N4O3, CAS 332115-86-3](/s/OVKAHFHFOMUZMI-UHFFFAOYSA-N.svg)
8-([1,1'-Biphenyl]-4-yloxy)-1,3,7-trimethyl-3,7-dihydro-1H-purine-2,6-dione
CAS 332115-86-3C20H18N4O3
![Ethyl 2-amino-1-(3-methoxyphenyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate chemical structure, C20H18N4O3, CAS 325816-75-9](/s/LLLRRTICLRYONP-UHFFFAOYSA-N.svg)
Ethyl 2-amino-1-(3-methoxyphenyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate
CAS 325816-75-9C20H18N4O3
![6-(Benzylamino)-1,3-dimethyl-5-(pyridin-2-yl)furo[2,3-d]pyrimidine-2,4(1H,3H)-dione chemical structure, C20H18N4O3, CAS 941964-48-3](/s/CIARDFLLQMQLPL-UHFFFAOYSA-N.svg)
6-(Benzylamino)-1,3-dimethyl-5-(pyridin-2-yl)furo[2,3-d]pyrimidine-2,4(1H,3H)-dione
CAS 941964-48-3C20H18N4O3
(2Z)-2-Cyano-2-(3,3-dimethyl-2,4-dihydroisoquinolin-1-ylidene)-N-(3-nitrophenyl)acetamide
CAS 330998-62-4C20H18N4O3
![Methyl 2-amino-1-(2-ethoxyphenyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate chemical structure, C20H18N4O3, CAS 431996-73-5](/s/XJNCOIGAEVTURR-UHFFFAOYSA-N.svg)
Methyl 2-amino-1-(2-ethoxyphenyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate
CAS 431996-73-5C20H18N4O3
![N-[2-(4-Ethoxyphenyl)-6-methylbenzotriazol-5-yl]furan-2-carboxamide chemical structure, C20H18N4O3, CAS 371120-04-6](/s/NIGJDWRAUSWYAW-UHFFFAOYSA-N.svg)
N-[2-(4-Ethoxyphenyl)-6-methylbenzotriazol-5-yl]furan-2-carboxamide
CAS 371120-04-6C20H18N4O3
![7-(Diethylamino)-3-[5-(pyridin-3-yl)-1,3,4-oxadiazol-2-yl]-2H-chromen-2-one chemical structure, C20H18N4O3, CAS 333773-20-9](/s/WLXYOMSAGLOEOH-UHFFFAOYSA-N.svg)
7-(Diethylamino)-3-[5-(pyridin-3-yl)-1,3,4-oxadiazol-2-yl]-2H-chromen-2-one
CAS 333773-20-9C20H18N4O3
![4-{4-[6-(2-Methoxyethoxy)quinolin-2-Yl]-1H-1,2,3-Triazol-1-Yl}phenol chemical structure, C20H18N4O3, CAS 1663475-09-9](/s/RDMXBXKUWXFIGH-UHFFFAOYSA-N.svg)
4-{4-[6-(2-Methoxyethoxy)quinolin-2-Yl]-1H-1,2,3-Triazol-1-Yl}phenol
CAS 1663475-09-9C20H18N4O3
![N-[2-(1H-Benzimidazol-2-yl)ethyl]-3-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)propanamide chemical structure, C20H18N4O3, CAS 300820-99-9](/s/OXDMIFWAZQTDLC-UHFFFAOYSA-N.svg)
N-[2-(1H-Benzimidazol-2-yl)ethyl]-3-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)propanamide
CAS 300820-99-9C20H18N4O3
- 6-(Furan-2-yl)-9-(4-methoxyphenyl)-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one727394-67-4C20H18N4O3
- N-{2-Oxo-2-[3-(3-phenyl-1,2,4-oxadiazol-5-yl)azetidin-1-yl]ethyl}benzamide1251564-89-2C20H18N4O3
- N-(2-(3-(Furan-2-yl)-6-oxopyridazin-1(6H)-yl)ethyl)-2-(1H-indol-1-yl)acetamide1207039-70-0C20H18N4O3
- 7-(3,4-Dimethoxyphenyl)-2-(2-methoxyphenyl)[1,2,4]triazolo[1,5-a]pyrimidine1435995-71-3C20H18N4O3
- Antiproliferative agent-40871837-59-1C20H18N4O3
- 2-(3,4-Dimethyl-5-isoxazolylamine)-N-(3,4-dimethyl-5-isoxazolyl)-1,4-naphthoquinone-4-imine81620-99-7C20H18N4O3
- 2-(3-(5-(Furan-2-yl)-1,3,4-oxadiazol-2-yl)-1H-indol-1-yl)-1-(pyrrolidin-1-yl)ethanone1021054-51-2C20H18N4O3
- 4-{3-[(3,4-Dimethoxyphenyl)amino]imidazo[1,2-a]pyrazin-2-yl}phenol879590-59-7C20H18N4O3
- N-(3-Methoxyphenyl)-3-(4-oxo-4,5-dihydro-3H-pyrimido[5,4-b]indol-3-yl)propanamide1105227-10-8C20H18N4O3
- N-(3-Methoxyphenyl)-2-(3-(5-methyl-1,3,4-oxadiazol-2-yl)-1H-indol-1-yl)acetamide1021074-37-2C20H18N4O3
- 4-(2-(6-Oxo-4-(p-tolyl)pyrimidin-1(6H)-yl)acetamido)benzamide1058436-83-1C20H18N4O3
- N-(2-Methoxyphenyl)-2-(8-methyl-4-oxo-4,5-dihydro-3H-pyrimido[5,4-b]indol-3-yl)acetamide1105215-85-7C20H18N4O3
- 3-(4-Ethoxy-3-methoxyphenyl)-5-(3-phenyl-1H-pyrazol-5-yl)-1,2,4-oxadiazole1257833-99-0C20H18N4O3
- 3-[3-[[6-[(2-Methyl-3-furanyl)methoxy]-3-pyridinyl]methyl]-5-isoxazolyl]-2-pyridinamine2342605-94-9C20H18N4O3
- Phosphine E2391-28-8C20H18N4O3
- 1-[5-(3-Cyanophenyl)-8-methoxy[1,2,4]triazolo[1,5-a]pyridin-2-yl]cyclopropanepropanoic acid2645422-08-6C20H18N4O3
- N-(3-Oxo-1,3-dihydro-2-benzofuran-5-yl)-1-phenyl-5-propyl-1H-1,2,3-triazole-4-carboxamide950254-67-8C20H18N4O3
- Phenol, 4-(2-(2,5-dimethoxy-4-(2-phenyldiazenyl)phenyl)diazenyl)-10000-42-7C20H18N4O3
- 4-Hydroxy-N~1~,N~3~-bis((pyridin-3-yl)methyl)benzene-1,3-dicarboximidic acid32828-80-1C20H18N4O3
- Ethyl 2-amino-1-(4-methoxyphenyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate300376-78-7C20H18N4O3
- Benzyl 7-(4-hydroxyphenyl)-5-methyl-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate457950-91-3C20H18N4O3
- Methyl 2-amino-1-(4-ethoxyphenyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate488810-29-3C20H18N4O3
- 5-Acetyl-2-({[3-(4-methoxyphenyl)-5-isoxazolyl]methyl}amino)-6-methylnicotinonitrile338749-68-1C20H18N4O3
- Methyl 4-[5-(4-methoxyphenyl)-4H,7H-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl]benzoate698378-78-8C20H18N4O3
- N-(2-(1H-Indol-3-yl)ethyl)-2-(2,4-dioxo-1,2-dihydroquinazolin-3(4H)-yl)acetamide919741-30-3C20H18N4O3
- Pyrazine-2-carboxylic acid (3-benzyloxy-4-methoxy-benzylidene)-hydrazide304908-35-8C20H18N4O3
- N-(4-Acetamidophenyl)-2-(6-oxo-3-phenylpyridazin-1-yl)acetamide941882-76-4C20H18N4O3
- N-(2-Furylmethyl)-2-[2-(4-methylphenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]acetamide941894-88-8C20H18N4O3
- 5-(Furan-2-yl)-N-(3-(2-phenyl-1H-imidazol-1-yl)propyl)isoxazole-3-carboxamide943821-01-0C20H18N4O3
- 2-(Furan-2-yl)-5-(4-(2-methylbenzoyl)piperazin-1-yl)oxazole-4-carbonitrile946309-05-3C20H18N4O3
- 2-Benzyl-6-(3-(4-methoxyphenyl)-1,2,4-oxadiazol-5-yl)-4,5-dihydropyridazin-3(2H)-one1251575-70-8C20H18N4O3
- 4-Hydroxy bispyrazolone153952-07-9C20H18N4O3
- 7-[4-(Benzyloxy)phenyl]-2-methyl-3,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-5-carboxylic acid1030481-49-2C20H18N4O3
- 3-Nitro-4-pyrrolidin-1-yl-N-quinolin-8-ylbenzamide712292-04-1C20H18N4O3
- N-(2-Methoxyphenyl)-1,9-dimethyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide864855-46-9C20H18N4O3
- N-(3-Methoxyphenyl)-1,9-dimethyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide864855-47-0C20H18N4O3
- 2-[(E)-2-(3,4-Dimethoxyphenyl)ethenyl]-5-(pyridin-3-ylmethylamino)-1,3-oxazole-4-carbonitrile882242-98-0C20H18N4O3
- 4-Methoxy-2-[2-({[(3-methoxybenzyl)oxy]imino}methyl)-1H-pyrrol-1-yl]nicotinonitrile339103-19-4C20H18N4O3
- N-(2-Methoxyphenyl)-2-(3-(5-methyl-1,3,4-oxadiazol-2-yl)-1H-indol-1-yl)acetamide1021133-05-0C20H18N4O3
- 5-(4-(Furan-2-carbonyl)piperazin-1-yl)-2-(p-tolyl)oxazole-4-carbonitrile946277-67-4C20H18N4O3
- 2-(Furan-2-yl)-5-(4-(3-methylbenzoyl)piperazin-1-yl)oxazole-4-carbonitrile946278-33-7C20H18N4O3
- 6-Methoxy-N-[(3-methyl-4-oxo-3,4-dihydrophthalazin-1-yl)methyl]-1H-indole-2-carboxamide1421583-71-2C20H18N4O3
- 2-((4-(2-(1H-Benzo[d]imidazol-1-yl)acetamido)but-2-yn-1-yl)oxy)benzamide1448051-85-1C20H18N4O3
- 11-(7-Methoxy-1-benzofuran-2-carbonyl)-4-methyl-2,3,7,11-tetraazatricyclo[7.4.0.0^{2,6}]trideca-1(9),3,5,7-tetraene1797875-34-3C20H18N4O3
- (E)-2-(3,4-Dimethoxystyryl)-5H-benzo[f][1,2,4]triazolo[1,5-d][1,4]diazepin-6(7H)-one936079-86-6C20H18N4O3
- 1,3-Dimethyl-8-(4-phenylmethoxyphenyl)-7H-purine-2,6-dione667881-14-3C20H18N4O3
- Ethyl 2-amino-1-(2-methoxyphenyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate301358-56-5C20H18N4O3
- N-(3-Methoxyphenyl)-1,7-dimethyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide896831-36-0C20H18N4O3
- p-((2-Methoxy-4-((2-methoxyphenyl)azo)phenyl)azo)phenol85136-55-6C20H18N4O3
- N-(4-Ethoxyphenyl)-1-methyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide864854-01-3C20H18N4O3
- 1-Benzyl-N-(2-hydroxyethyl)-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide900257-14-9C20H18N4O3
- Pyrazine-2-carboxylic acid (4-benzyloxy-3-methoxy-benzylidene)-hydrazide304908-13-2C20H18N4O3
- N-[3-(Acetylamino)phenyl]-2-(6-oxo-3-phenylpyridazin-1(6H)-yl)acetamide922944-79-4C20H18N4O3
- N-[4-(Acetylamino)phenyl]-1-(4-methylphenyl)-4-oxo-1,4-dihydropyridazine-3-carboxamide898600-33-4C20H18N4O3
- 4-[4-(4-Nitrophenyl)-6-phenyl-2-pyrimidinyl]morpholine352225-04-8C20H18N4O3
- 5-[3-(2,4-Dimethoxyphenyl)-1H-pyrazol-5-yl]-3-(4-methylphenyl)-1,2,4-oxadiazole1187346-02-6C20H18N4O3
- 5-[3-(2,4-Dimethoxyphenyl)-1H-pyrazol-5-yl]-3-(2-methylphenyl)-1,2,4-oxadiazole1094606-98-0C20H18N4O3
- 1-{[(4-Methylphenyl)carbamoyl]methyl}-6-oxo-N-phenyl-1,6-dihydropyridazine-3-carboxamide946207-74-5C20H18N4O3
- 2-(3-Methoxypropyl)-8-(2-pyridyl)pyrido[4,3-b][1,6]naphthyridine-1,9(2H,8H)-dione1158534-54-3C20H18N4O3
- N-[4-(3-Methyl-1,2,4-oxadiazol-5-yl)phenyl]-5-oxo-1-phenylpyrrolidine-3-carboxamide1031660-29-3C20H18N4O3
- 2-[3-(2-Furyl)-6-oxo-1(6H)-pyridazinyl]-N~1~-[2-(1H-indol-3-yl)ethyl]acetamide1246041-36-0C20H18N4O3
- 2-[3-(2-Furyl)-6-oxo-1(6H)-pyridazinyl]-N-[2-(1H-indol-1-yl)ethyl]acetamide1351695-09-4C20H18N4O3
- N-(2-(3-Hydroxy-2-oxoquinoxalin-1(2H)-yl)ethyl)-1-methyl-1H-indole-3-carboxamide1401585-33-8C20H18N4O3
- N-(2-(3-Hydroxy-2-oxoquinoxalin-1(2H)-yl)ethyl)-1-methyl-1H-indole-2-carboxamide1401592-72-0C20H18N4O3
- N-(2-(3-Hydroxy-2-oxoquinoxalin-1(2H)-yl)ethyl)-1-methyl-1H-indole-5-carboxamide1401606-12-9C20H18N4O3
- 3-(2,5-Dioxo-2,3,4,5-tetrahydro-1H-1,4-benzodiazepin-3-yl)-N-(1H-indol-4-yl)propanamide1351679-28-1C20H18N4O3
- 7-Methoxy-N-(2-(2-(pyridin-3-yl)-1H-imidazol-1-yl)ethyl)benzofuran-2-carboxamide2034234-19-8C20H18N4O3
- 2-(2-(3-(4-(Dimethylamino)phenyl)-1,2,4-oxadiazol-5-yl)ethyl)isoindoline-1,3-dione1809491-77-7C20H18N4O3
- N-(2-Ethoxyphenyl)-1-methyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide864854-00-2C20H18N4O3
- 10-Imino-2-(4-methoxyphenyl)hexahydro-8a,4-(epoxymethano)chromene-3,3,4(2H)-tricarbonitrile1005073-85-7C20H18N4O3
- 12-(4-Methoxyphenyl)-2-methyl-9,10-dihydro-8H-chromeno[3,2-e][1,2,4]triazolo[1,5-c]pyrimidin-11(12H)-one902029-42-9C20H18N4O3
- RefChem:314204872103-05-4C20H18N4O3
- N-{3-[(1Z)-1-{2-[(2-methylfuran-3-yl)carbonyl]hydrazinylidene}ethyl]phenyl}pyridine-3-carboxamide669726-53-8C20H18N4O3
- 7-(Diethylamino)-3-[3-(pyridin-3-yl)-1,2,4-oxadiazol-5-yl]-2H-chromen-2-one892754-79-9C20H18N4O3
- 1-{[(2-Methylphenyl)carbamoyl]methyl}-6-oxo-N-phenyl-1,6-dihydropyridazine-3-carboxamide946366-59-2C20H18N4O3
- 1-[(Benzylcarbamoyl)methyl]-6-oxo-N-phenyl-1,6-dihydropyridazine-3-carboxamide946366-71-8C20H18N4O3
Frequently asked questions
What is the molar mass of C20H18N4O3?
The molar mass of C20H18N4O3 is 362.39 g/mol, calculated from standard atomic weights for 20 carbon atoms, 18 hydrogen atoms, 4 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 362.1379 Da.
How many compounds have the formula C20H18N4O3?
CompoundList lists 205 compounds with the molecular formula C20H18N4O3, including Ethyl 7-(3-hydroxyphenyl)-5-phenyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate, 1,5-Dimethyl-4-((E)-((E)-3-(4-nitrophenyl)allylidene)amino)-2-phenyl-1H-pyrazol-3(2H)-one, N-[4-(4,5-Dicyano-2-morpholin-4-ylphenoxy)phenyl]acetamide. 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 C20H18N4O3?
C20H18N4O3 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.