Molecular formula
C18H21N5O3
174 compounds have this formula on CompoundList.
- Molar mass
- 355.40g/mol
- Monoisotopic mass
- 355.1644Da
- Atoms
- 47
- Elements
- 4
- Rings plus double bonds
- 11
The formula C18H21N5O3 describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 5 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 × 1860.83%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 215.96%1.008 × 21 = 21.168 g/mol
- N Nitrogen × 519.71%14.007 × 5 = 70.035 g/mol
- O Oxygen × 313.51%15.999 × 3 = 47.997 g/mol
Look up another formula
Compounds with the formula C18H21N5O3
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 100 of 174 compounds
HC-030031
CAS 349085-38-7C18H21N5O3
![N-Ethyl-2-imino-1-(2-methoxyethyl)-10-methyl-5-oxo-1,5-dihydro-2H-dipyrido[1,2-A:2,3-D]pyrimidine-3-carboxamide chemical structure, C18H21N5O3, CAS 371212-22-5](/s/KYFHBTMOAYXZAC-UHFFFAOYSA-N.svg)
N-Ethyl-2-imino-1-(2-methoxyethyl)-10-methyl-5-oxo-1,5-dihydro-2H-dipyrido[1,2-A:2,3-D]pyrimidine-3-carboxamide
CAS 371212-22-5C18H21N5O3
Tba-7371
CAS 1494675-86-3C18H21N5O3
1-Ethyl-2-imino-N-(3-methoxypropyl)-5-oxo-1,5-dihydro-2H-dipyrido(1,2-A:2,3-D)pyrimidine-3-carboxamide
CAS 371226-15-2C18H21N5O3
![2-Imino-1-(3-methoxypropyl)-N,10-dimethyl-5-oxo-1,5-dihydro-2H-dipyrido[1,2-a:2,3-d]pyrimidine-3-carboxamide chemical structure, C18H21N5O3, CAS 510762-62-6](/s/PICLWWWOQJOTMO-UHFFFAOYSA-N.svg)
2-Imino-1-(3-methoxypropyl)-N,10-dimethyl-5-oxo-1,5-dihydro-2H-dipyrido[1,2-a:2,3-d]pyrimidine-3-carboxamide
CAS 510762-62-6C18H21N5O3
![10-(4-Methoxyphenyl)-1,3-dimethyl-6,7,8,9-tetrahydropurino[7,8-a][1,3]diazepine-2,4-dione chemical structure, C18H21N5O3, CAS 372081-87-3](/s/LZJAXMFLXZDVMW-UHFFFAOYSA-N.svg)
10-(4-Methoxyphenyl)-1,3-dimethyl-6,7,8,9-tetrahydropurino[7,8-a][1,3]diazepine-2,4-dione
CAS 372081-87-3C18H21N5O3
3-Methyl-8-morpholino-7-phenethyl-1H-purine-2,6(3H,7H)-dione
CAS 301355-15-7C18H21N5O3
N-Benzyl-2-(1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7H-purin-7-yl)-N-ethylacetamide
CAS 332117-25-6C18H21N5O3
8-((4-Methoxybenzyl)amino)-3-methyl-7-(2-methylallyl)-1H-purine-2,6(3H,7H)-dione
CAS 716342-34-6C18H21N5O3
![N-Ethyl-6-imino-7-(3-methoxypropyl)-2-oxo-1,7,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),4,9,11,13-pentaene-5-carboxamide chemical structure, C18H21N5O3, CAS 510762-63-7](/s/SZHYJTDLFSOPAU-UHFFFAOYSA-N.svg)
N-Ethyl-6-imino-7-(3-methoxypropyl)-2-oxo-1,7,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),4,9,11,13-pentaene-5-carboxamide
CAS 510762-63-7C18H21N5O3
![N6-[(3,4,5-trimethoxyphenyl)methyl]quinazoline-2,4,6-triamine chemical structure, C18H21N5O3, CAS 13794-67-7](/s/YYJWQABXDCUJEF-UHFFFAOYSA-N.svg)
N6-[(3,4,5-trimethoxyphenyl)methyl]quinazoline-2,4,6-triamine
CAS 13794-67-7C18H21N5O3
2-Butyl-9-(4-ethoxyphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide
CAS 899970-64-0C18H21N5O3
7-Benzyl-1,3-dimethyl-8-morpholin-4-yl-3,7-dihydro-purine-2,6-dione
CAS 368434-78-0C18H21N5O3
(5-Amino-1,2-dihydro-3-(4-methoxyphenyl)-2-methylpyrido(3,4-b)pyrazin-7-yl)carbamic acid ethyl ester
CAS 135696-54-7C18H21N5O3
![10-(4-Ethoxyphenyl)-1-methyl-6,7,8,9-tetrahydropurino[7,8-a][1,3]diazepine-2,4-dione chemical structure, C18H21N5O3, CAS 282522-86-5](/s/OQLGXQHUIFOTLM-UHFFFAOYSA-N.svg)
10-(4-Ethoxyphenyl)-1-methyl-6,7,8,9-tetrahydropurino[7,8-a][1,3]diazepine-2,4-dione
CAS 282522-86-5C18H21N5O3
4-(2,6-Dioxo-1,3-dipropyl-2,3,6,7-tetrahydro-1H-purin-8-yl)benzamide
CAS 102587-84-8C18H21N5O3
![6-[(3,4,5-Trimethoxyanilino)methyl]quinazoline-2,4-diamine chemical structure, C18H21N5O3, CAS 52128-09-3](/s/UQEQZLDUBBDNMD-UHFFFAOYSA-N.svg)
6-[(3,4,5-Trimethoxyanilino)methyl]quinazoline-2,4-diamine
CAS 52128-09-3C18H21N5O3
![N-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-4-(6-methylpyrimidin-4-yl)piperazine-1-carboxamide chemical structure, C18H21N5O3, CAS 1396564-70-7](/s/MVZRRWYZYTWAQE-UHFFFAOYSA-N.svg)
N-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-4-(6-methylpyrimidin-4-yl)piperazine-1-carboxamide
CAS 1396564-70-7C18H21N5O3
Lepzacitinib
CAS 2321488-47-3C18H21N5O3
![N-(1-(tert-Butyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-2-ethoxybenzamide chemical structure, C18H21N5O3, CAS 899751-49-6](/s/XULUIARRFNZXIB-UHFFFAOYSA-N.svg)
N-(1-(tert-Butyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-2-ethoxybenzamide
CAS 899751-49-6C18H21N5O3
![N-(2-((3-(3-Methoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)butyramide chemical structure, C18H21N5O3, CAS 1021030-92-1](/s/HROOIEYYNHWGKZ-UHFFFAOYSA-N.svg)
N-(2-((3-(3-Methoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)butyramide
CAS 1021030-92-1C18H21N5O3
2-(1,3-Dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7H-purin-7-yl)-N-mesitylacetamide
CAS 6127-55-5C18H21N5O3
2-(2-(3,5-Dimethyl-1H-pyrazol-1-yl)-4,5-dimethyl-6-oxopyrimidin-1(6H)-yl)-N-(furan-2-ylmethyl)acetamide
CAS 1002219-06-8C18H21N5O3
![N-(2-((3-(3-Methoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)isobutyramide chemical structure, C18H21N5O3, CAS 1021125-32-5](/s/LHHZEVNEXRCBSK-UHFFFAOYSA-N.svg)
N-(2-((3-(3-Methoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)isobutyramide
CAS 1021125-32-5C18H21N5O3
- 2-Methoxy-N-(2-(5-(3-methylbenzyl)-4-oxo-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl)acetamide922087-51-2C18H21N5O3
- 4-Oxo-N-((tetrahydrofuran-2-yl)methyl)-8-(p-tolyl)-4,6,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazine-3-carboxamide946310-87-8C18H21N5O3
- N-Cyclohexyl-2,4-dimethyl-1,5-dioxo-1,2,4,5-tetrahydro-[1,2,4]triazolo[4,3-a]quinazoline-8-carboxamide1105231-62-6C18H21N5O3
- N-[3-(2-Methoxyethyl)-4-oxo-3,4-dihydroquinazolin-6-yl]-4-(1H-pyrazol-1-yl)butanamide1574412-40-0C18H21N5O3
- 2-(4-Furan-2-yl-piperazin-1-yl)-6,7-dimethoxy-quinazolin-4-ylamine756767-48-3C18H21N5O3
- 3-(3,5-Dimethyl-1-(4-methyl-6-oxo-1,6-dihydropyrimidin-2-yl)-1H-pyrazol-4-yl)-N-(furan-2-ylmethyl)propanamide1172724-40-1C18H21N5O3
- N-[(E)-(2,4-Dimethoxyphenyl)methylideneamino]-4-(dimethylaminodiazenyl)benzamide62591-54-2C18H21N5O3
- 4-(6-Methoxy-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)-N-(2-methoxybenzyl)butanamide1374513-93-5C18H21N5O3
- 9-(4-Ethoxyphenyl)-1,7-dimethyl-6,7,8,9-tetrahydropyrimido[2,1-f]purine-2,4(1H,3H)-dione848743-51-1C18H21N5O3
- 8-(4-Methoxyphenyl)-1-methyl-3-propyl-7,8-dihydro-1H-imidazo[2,1-f]purine-2,4(3H,6H)-dione876708-26-8C18H21N5O3
- 9-(4-Ethylphenyl)-7-hydroxy-1,3-dimethyl-7,8-dihydro-6H-purino[7,8-a]pyrimidine-2,4-dione333755-28-5C18H21N5O3
- 7-(3-Ethoxypropyl)-6-imino-11-methyl-2-oxo-1,7,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),4,9,11,13-pentaene-5-carboxamide663219-04-3C18H21N5O3
- 1-(3-Ethoxypropyl)-2-imino-N-methyl-5-oxo-2,5-dihydro-1H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide797814-76-7C18H21N5O3
- 9-(2-Methoxyphenyl)-1,3,7-trimethyl-7,8-dihydro-6H-purino[7,8-a]pyrimidine-2,4-dione876900-69-5C18H21N5O3
- 1-Ethyl-2-imino-N-(2-methoxyethyl)-10-methyl-5-oxo-2,5-dihydro-1H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide371237-32-0C18H21N5O3
- 3-(2-Methoxyethyl)-1-methyl-9-phenyl-6,7,8,9-tetrahydropyrimido[2,1-f]purine-2,4(1H,3H)-dione845992-14-5C18H21N5O3
- 8-(Allylamino)-3-methyl-7-(3-phenoxypropyl)-1H-purine-2,6(3H,7H)-dione876892-35-2C18H21N5O3
- 3-(2-Ethoxyethyl)-1-methyl-8-phenyl-7,8-dihydro-1H-imidazo[2,1-f]purine-2,4(3H,6H)-dione872838-93-2C18H21N5O3
- 3-Ethyl-9-(3-methoxyphenyl)-1-methyl-7,8-dihydro-6H-purino[7,8-a]pyrimidine-2,4-dione848735-58-0C18H21N5O3
- 9-(2-Methoxy-5-methylphenyl)-1,3-dimethyl-7,8-dihydro-6H-purino[7,8-a]pyrimidine-2,4-dione887695-55-8C18H21N5O3
- 9-(2-Methoxy-5-methylphenyl)-1,7-dimethyl-7,8-dihydro-6H-purino[7,8-a]pyrimidine-2,4-dione887696-10-8C18H21N5O3
- 2-Imino-1-(3-methoxypropyl)-N,8-dimethyl-5-oxo-1,5-dihydro-2H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide842963-96-6C18H21N5O3
- 3-Ethyl-9-(4-methoxyphenyl)-1-methyl-7,8-dihydro-6H-purino[7,8-a]pyrimidine-2,4-dione847161-00-6C18H21N5O3
- 9-(3-Methoxyphenyl)-1,3,7-trimethyl-7,8-dihydro-6H-purino[7,8-a]pyrimidine-2,4-dione843672-88-8C18H21N5O3
- 2-(2-Methoxyethyl)-4-methyl-6-(2-methylphenyl)-7,8-dihydropurino[7,8-a]imidazole-1,3-dione893964-62-0C18H21N5O3
- 8-(Furan-2-ylmethyl)-1,6,7-trimethyl-3-propyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione887460-98-2C18H21N5O3
- 5-N-(3,4-Dimethylphenyl)-7-N,7-N-diethyl-4-nitro-2,1,3-benzoxadiazole-5,7-diamine376617-53-7C18H21N5O3
- 1-Benzyl-3,7-dimethyl-8-morpholin-4-ylpurine-2,6-dione304869-27-0C18H21N5O3
- 3-(2-Methoxyethyl)-1-methyl-8-(3-methylphenyl)-7,8-dihydro-1H-imidazo[2,1-f]purine-2,4(3H,6H)-dione872840-13-6C18H21N5O3
- 8-(Furan-2-ylmethyl)-3-isobutyl-1,7-dimethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione896813-97-1C18H21N5O3
- 6-(4-Ethoxyphenyl)-2-ethyl-4-methyl-7,8-dihydropurino[7,8-a]imidazole-1,3-dione893951-99-0C18H21N5O3
- 2-(3-Hydroxypropyl)-4-methyl-6-(4-methylphenyl)-7,8-dihydropurino[7,8-a]imidazole-1,3-dione893955-58-3C18H21N5O3
- 2-(3-Hydroxypropyl)-4-methyl-6-(3-methylphenyl)-7,8-dihydropurino[7,8-a]imidazole-1,3-dione893955-65-2C18H21N5O3
- 2-Ethyl-6-(2-methoxy-5-methylphenyl)-4-methyl-7,8-dihydropurino[7,8-a]imidazole-1,3-dione887696-82-4C18H21N5O3
- 3-Butyl-8-(2-furylmethyl)-1,7-dimethyl-1,3,5-trihydro-4-imidazolino[1,2-h]puri ne-2,4-dione887454-57-1C18H21N5O3
- 2,4-Dimethyl-6-(4-propoxyphenyl)-7,8-dihydropurino[7,8-a]imidazole-1,3-dione1021065-42-8C18H21N5O3
- 4-(2-Methoxyphenyl)-8-methyl-2-(morpholin-4-yl)-1,4-dihydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one908496-41-3C18H21N5O3
- N-Ethyl-6-imino-7-(2-methoxyethyl)-13-methyl-2-oxo-1,7,9-triazatricyclo[8.4.0.0^{3,8}]tetradeca-3(8),4,9,11,13-pentaene-5-carboxamide842963-36-4C18H21N5O3
- 3-(1,3-Dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7H-purin-7-yl)-N-(1-phenylethyl)propanamide887682-16-8C18H21N5O3
- 2-({3-Ethoxy-4-[(1-phenyl-1H-tetrazol-5-yl)oxy]benzyl}amino)ethanol932957-09-0C18H21N5O3
- 8-(Butylamino)-3-methyl-7-(2-oxo-2-phenylethyl)-1H-purine-2,6(3H,7H)-dione1040667-72-8C18H21N5O3
- N-(1H-1,3-Benzodiazol-2-yl)-2-{1-methyl-2,4-dioxo-1,3-diazaspiro[4.5]decan-3-yl}acetamide1036183-41-1C18H21N5O3
- 1,3-Dimethyl-8-[3-(methylethoxy)phenyl]-1,3,5-trihydroimidazolidino[1,2-h]puri ne-2,4-dione959237-85-5C18H21N5O3
- N-(5-(1-Isopropyl-1H-pyrazol-5-yl)-1,3,4-oxadiazol-2-yl)-2-(4-methoxy-3-methylphenyl)acetamide1173261-58-9C18H21N5O3
- 3-[7-(4-Methoxyphenyl)-8-oxo-7H,8H-[1,2,4]triazolo[4,3-a]pyrazin-3-yl]-N-propylpropanamide1110974-57-6C18H21N5O3
- (4-(Furan-2-carbonyl)piperazin-1-yl)(6-(pyrrolidin-1-yl)pyridazin-3-yl)methanone1396785-23-1C18H21N5O3
- [7-(4-Hydroxyphenyl)-2,5-dimethyl-3,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl](morpholin-4-yl)methanone924864-41-5C18H21N5O3
- 1-(4,5-Dimethyl-6-oxo-1,6-dihydropyrimidin-2-yl)-N-(furan-2-ylmethyl)-5-propyl-1H-pyrazole-4-carboxamide1172012-17-7C18H21N5O3
- (2-Imino-5-oxo-1-propyl(1,6-dihydropyridino[1,2-a]pyridino[2,3-d]pyrimidin-3-y l))-N-(2-methoxyethyl)carboxamide797020-97-4C18H21N5O3
- Methyl 2-amino-1-[2-(4-morpholinyl)ethyl]-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate433975-02-1C18H21N5O3
- 6-(2-Ethoxyphenyl)-2-ethyl-4-methyl-7,8-dihydropurino[7,8-a]imidazole-1,3-dione887672-32-4C18H21N5O3
- 2-(1-(tert-Butyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-N-(4-methoxyphenyl)acetamide863447-85-2C18H21N5O3
- N-(5-(Diethylamino)-2-((E)-(4-nitrophenyl)diazenyl)phenyl)acetamide70873-06-2C18H21N5O3
- 2-(2-(3,5-Dimethyl-1H-pyrazol-1-yl)-4-ethyl-6-oxopyrimidin-1(6H)-yl)-N-(furan-2-ylmethyl)acetamide1013834-77-9C18H21N5O3
- 8-(Isobutylamino)-3-methyl-7-(2-oxo-2-phenylethyl)-1H-purine-2,6(3H,7H)-dione1040667-78-4C18H21N5O3
- 1,3-Dimethyl-8-(3-propoxyphenyl)-1,3,5-trihydroimidazolidino[1,2-h]purine-2,4-dione946360-86-7C18H21N5O3
- 3-(3,5-Dimethyl-1,2-oxazol-4-yl)-N-{4-[5-(methoxymethyl)-4H-1,2,4-triazol-3-yl]phenyl}propanamide1401535-74-7C18H21N5O3
- N-{2-[4-(2-Methoxyphenyl)piperazino]-2-oxoethyl}-2-pyrazinecarboxamide1374531-35-7C18H21N5O3
- 1-(2-Methoxyethyl)-N-[3-(tetrahydrofuran-2-yl)-1H-1,2,4-triazol-5-yl]-1H-indole-3-carboxamide1574307-23-5C18H21N5O3
- 4-[(4-Acetylpiperazino)carbonyl]-1-(1H-indazol-3-yl)-2-pyrrolidinone1435988-69-4C18H21N5O3
- 9-(4-Methoxyphenyl)-1,3,7-trimethyl-7,8-dihydro-6H-purino[7,8-a]pyrimidine-2,4-dione847367-59-3C18H21N5O3
- 3-(3-Hydroxypropyl)-1-methyl-9-phenyl-7,8-dihydro-6H-purino[7,8-a]pyrimidine-2,4-dione846600-03-1C18H21N5O3
- 2-Imino-N~3~-isopropyl-1-(2-methoxyethyl)-5-oxo-1,5-dihydro-2H-dipyrido[1,2-a:2,3-d]pyrimidine-3-carboxamide847040-09-9C18H21N5O3
- 2-(1-(2-Hydroxyethyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-N-mesitylacetamide900011-33-8C18H21N5O3
- 2-Butyl-9-(2-ethoxyphenyl)-8-oxo-8,9-dihydro-7H-purine-6-carboxamide899742-44-0C18H21N5O3
- 6-Methyl-3-(((2-oxo-3-oxazolidinyl)imino)methyl)-2-(1-piperidinyl)-4H-pyrido(1,2-a)pyrimidin-4-one54978-26-6C18H21N5O3
- N-(1-(tert-Butyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-2-phenoxypropanamide899945-46-1C18H21N5O3
- 2-(2-Oxo-2-(pyrrolidin-1-yl)ethyl)-8-(p-tolyl)-7,8-dihydroimidazo[2,1-c][1,2,4]triazine-3,4(2H,6H)-dione941936-56-7C18H21N5O3
- N-(1-(tert-Butyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-2-(4-methoxyphenyl)acetamide899995-76-7C18H21N5O3
- N1-(3-(1H-imidazol-1-yl)propyl)-N2-(3-(2-oxopyrrolidin-1-yl)phenyl)oxalamide941888-93-3C18H21N5O3
- [[2-Oxo-2-(4-pyrimidin-2-ylpiperazin-1-yl)ethyl]-(phenyl)amino]acetic acid1142211-53-7C18H21N5O3
- 3-Butoxy-N-[5-(1,5-dimethyl-1H-pyrazol-3-yl)-1,3,4-oxadiazol-2-yl]benzamide1019101-72-4C18H21N5O3
- 1,3-Dimethyl-2,4-dioxo-7-propyl-N-(pyridin-2-ylmethyl)-2,3,4,7-tetrahydro-1H-pyrrolo[2,3-d]pyrimidine-6-carboxamide1040655-90-0C18H21N5O3
- 7-Butyl-1,3-dimethyl-2,4-dioxo-N-(pyridin-3-yl)-2,3,4,7-tetrahydro-1H-pyrrolo[2,3-d]pyrimidine-6-carboxamide1040656-49-2C18H21N5O3
- (3-(Furan-2-yl)-1H-pyrazol-5-yl)(4-(5-isopropyl-1,3,4-oxadiazol-2-yl)piperidin-1-yl)methanone1305321-44-1C18H21N5O3
- 2-(2-(4-Ethylphenyl)-4-oxopyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl)-N-(2-methoxyethyl)acetamide1291867-23-6C18H21N5O3
Frequently asked questions
What is the molar mass of C18H21N5O3?
The molar mass of C18H21N5O3 is 355.40 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 5 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 355.1644 Da.
How many compounds have the formula C18H21N5O3?
CompoundList lists 174 compounds with the molecular formula C18H21N5O3, including HC-030031, N-Ethyl-2-imino-1-(2-methoxyethyl)-10-methyl-5-oxo-1,5-dihydro-2H-dipyrido[1,2-A:2,3-D]pyrimidine-3-carboxamide, Tba-7371. 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 C18H21N5O3?
C18H21N5O3 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.