Molecular formula
C21H18FN5O2
77 compounds have this formula on CompoundList.
- Molar mass
- 391.41g/mol
- Monoisotopic mass
- 391.1445Da
- Atoms
- 47
- Elements
- 5
- Rings plus double bonds
- 15
The formula C21H18FN5O2 describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 1 fluorine atom, 5 nitrogen atoms and 2 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 × 2164.44%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 184.64%1.008 × 18 = 18.144 g/mol
- F Fluorine × 14.85%18.998 × 1 = 18.998 g/mol
- N Nitrogen × 517.89%14.007 × 5 = 70.035 g/mol
- O Oxygen × 28.18%15.999 × 2 = 31.998 g/mol
Look up another formula
Compounds with the formula C21H18FN5O2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 77 of 77 compounds
![N-(2,3-Dimethylphenyl)-2-(1-(4-fluorophenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide chemical structure, C21H18FN5O2, CAS 852450-30-7](/s/PHOVSERIKJGOKC-UHFFFAOYSA-N.svg)
N-(2,3-Dimethylphenyl)-2-(1-(4-fluorophenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide
CAS 852450-30-7C21H18FN5O2
![2-(1-(4-Fluorophenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-N-phenethylacetamide chemical structure, C21H18FN5O2, CAS 852450-76-1](/s/APEXETWJCYIDHC-UHFFFAOYSA-N.svg)
2-(1-(4-Fluorophenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-N-phenethylacetamide
CAS 852450-76-1C21H18FN5O2
![N-(1H-Benzo[d]imidazol-2-yl)-4-(3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl)butanamide chemical structure, C21H18FN5O2, CAS 1251604-18-8](/s/UBILRFGTBQUWOB-UHFFFAOYSA-N.svg)
N-(1H-Benzo[d]imidazol-2-yl)-4-(3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl)butanamide
CAS 1251604-18-8C21H18FN5O2
4-(3-(4-Fluorophenyl)-6-oxopyridazin-1(6H)-yl)-N-(1H-indazol-6-yl)butanamide
CAS 1251576-92-7C21H18FN5O2
![2-[2-(4-Fluorophenyl)-4-oxopyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl]-N-(2-phenylethyl)acetamide chemical structure, C21H18FN5O2, CAS 1021020-53-0](/s/UUENFKUXHUVOJM-UHFFFAOYSA-N.svg)
2-[2-(4-Fluorophenyl)-4-oxopyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl]-N-(2-phenylethyl)acetamide
CAS 1021020-53-0C21H18FN5O2
![N-(2-((3-(4-Fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)-2-methylbenzamide chemical structure, C21H18FN5O2, CAS 1021030-60-3](/s/JODVXVSQRJIMHO-UHFFFAOYSA-N.svg)
N-(2-((3-(4-Fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)-2-methylbenzamide
CAS 1021030-60-3C21H18FN5O2
![N-(2-((3-(4-Fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)-3-methylbenzamide chemical structure, C21H18FN5O2, CAS 1021066-06-7](/s/YEKYFCGICMUUOL-UHFFFAOYSA-N.svg)
N-(2-((3-(4-Fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)-3-methylbenzamide
CAS 1021066-06-7C21H18FN5O2
![N-{[6-(4-Fluorophenyl)-[1,2,4]triazolo[4,3-B]pyridazin-3-yl]methyl}-2-(3-methylphenoxy)acetamide chemical structure, C21H18FN5O2, CAS 1775360-78-5](/s/QNVJRKOMRIVTNO-UHFFFAOYSA-N.svg)
N-{[6-(4-Fluorophenyl)-[1,2,4]triazolo[4,3-B]pyridazin-3-yl]methyl}-2-(3-methylphenoxy)acetamide
CAS 1775360-78-5C21H18FN5O2
![2-Ethoxy-N-{[1-(4-fluorophenyl)-1H-1,2,3,4-tetrazol-5-yl]methyl}naphthalene-1-carboxamide chemical structure, C21H18FN5O2, CAS 897623-55-1](/s/XXUCYUXQMJLZHS-UHFFFAOYSA-N.svg)
2-Ethoxy-N-{[1-(4-fluorophenyl)-1H-1,2,3,4-tetrazol-5-yl]methyl}naphthalene-1-carboxamide
CAS 897623-55-1C21H18FN5O2
![N-(2-((3-(4-Fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)-2-phenylacetamide chemical structure, C21H18FN5O2, CAS 946328-63-8](/s/RSBMUIQHOFKYIT-UHFFFAOYSA-N.svg)
N-(2-((3-(4-Fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)-2-phenylacetamide
CAS 946328-63-8C21H18FN5O2
![3-(2-Fluoro-5-{6-methoxyimidazo[1,2-b]pyridazin-2-yl}phenyl)-1-(2-methylphenyl)urea chemical structure, C21H18FN5O2, CAS 1060272-20-9](/s/UCRBHCJBYSPTLG-UHFFFAOYSA-N.svg)
3-(2-Fluoro-5-{6-methoxyimidazo[1,2-b]pyridazin-2-yl}phenyl)-1-(2-methylphenyl)urea
CAS 1060272-20-9C21H18FN5O2
![3-[(4-Fluorophenyl)methyl]-1-methyl-8-phenyl-1H,2H,3H,4H,6H,7H,8H-imidazo[1,2-g]purine-2,4-dione chemical structure, C21H18FN5O2, CAS 872838-76-1](/s/VTICJTQWAJXVFD-UHFFFAOYSA-N.svg)
3-[(4-Fluorophenyl)methyl]-1-methyl-8-phenyl-1H,2H,3H,4H,6H,7H,8H-imidazo[1,2-g]purine-2,4-dione
CAS 872838-76-1C21H18FN5O2
![N-(2,4-Dimethylphenyl)-2-[1-(4-fluorophenyl)-4-oxo-1,4-dihydro-5H-pyrazolo[3,4-d]pyrimidin-5-yl]acetamide chemical structure, C21H18FN5O2, CAS 852450-33-0](/s/WYQVIBBSJAPRMO-UHFFFAOYSA-N.svg)
N-(2,4-Dimethylphenyl)-2-[1-(4-fluorophenyl)-4-oxo-1,4-dihydro-5H-pyrazolo[3,4-d]pyrimidin-5-yl]acetamide
CAS 852450-33-0C21H18FN5O2
![N-(2,5-Dimethylphenyl)-2-(1-(4-fluorophenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide chemical structure, C21H18FN5O2, CAS 852450-32-9](/s/YACYAFOHNTVPNO-UHFFFAOYSA-N.svg)
N-(2,5-Dimethylphenyl)-2-(1-(4-fluorophenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide
CAS 852450-32-9C21H18FN5O2
![N-Cyclopentyl-3-(3-fluorophenyl)-5-oxo-4,5-dihydro-[1,2,3]triazolo[1,5-a]quinazoline-8-carboxamide chemical structure, C21H18FN5O2, CAS 1031650-09-5](/s/LNAIKCHOTHYAJB-UHFFFAOYSA-N.svg)
N-Cyclopentyl-3-(3-fluorophenyl)-5-oxo-4,5-dihydro-[1,2,3]triazolo[1,5-a]quinazoline-8-carboxamide
CAS 1031650-09-5C21H18FN5O2
![2-Fluoro-5-{[7-methyl-3-(morpholine-4-carbonyl)-1,8-naphthyridin-4-yl]amino}benzonitrile chemical structure, C21H18FN5O2, CAS 1251600-96-0](/s/ZSINKODYGRSURL-UHFFFAOYSA-N.svg)
2-Fluoro-5-{[7-methyl-3-(morpholine-4-carbonyl)-1,8-naphthyridin-4-yl]amino}benzonitrile
CAS 1251600-96-0C21H18FN5O2
![2-{4-[5-(3-Fluorophenyl)-1,2,4-oxadiazol-3-yl]-1H-imidazol-1-yl}-N-[(3-methylphenyl)methyl]acetamide chemical structure, C21H18FN5O2, CAS 1251693-34-1](/s/RVLKEZBFQPECRI-UHFFFAOYSA-N.svg)
2-{4-[5-(3-Fluorophenyl)-1,2,4-oxadiazol-3-yl]-1H-imidazol-1-yl}-N-[(3-methylphenyl)methyl]acetamide
CAS 1251693-34-1C21H18FN5O2
Ethyl 6-amino-5,7,7-tricyano-8-(3-fluorophenyl)-3,7,8,8a-tetrahydro-2(1H)-isoquinolinecarboxylate
CAS 488783-67-1C21H18FN5O2
Ethyl 6-amino-5,7,7-tricyano-8-(4-fluorophenyl)-3,7,8,8a-tetrahydro-2(1H)-isoquinolinecarboxylate
CAS 1310909-47-7C21H18FN5O2
Ethyl 6-amino-5,7,7-tricyano-8-(2-fluorophenyl)-3,7,8,8a-tetrahydro-2(1H)-isoquinolinecarboxylate
CAS 488783-66-0C21H18FN5O2
![N-(3,5-Dimethylphenyl)-2-[1-(4-fluorophenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]acetamide chemical structure, C21H18FN5O2, CAS 852450-34-1](/s/ZORCAGGKFBAMNB-UHFFFAOYSA-N.svg)
N-(3,5-Dimethylphenyl)-2-[1-(4-fluorophenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]acetamide
CAS 852450-34-1C21H18FN5O2
![2-[2-(3,4-Dimethylphenyl)-4-oxopyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl]-N-(2-fluorophenyl)acetamide chemical structure, C21H18FN5O2, CAS 1021020-60-9](/s/KJEUPEXIUAUMQE-UHFFFAOYSA-N.svg)
2-[2-(3,4-Dimethylphenyl)-4-oxopyrazolo[1,5-d][1,2,4]triazin-5(4H)-yl]-N-(2-fluorophenyl)acetamide
CAS 1021020-60-9C21H18FN5O2
![N-(5-Fluoro-2-methylphenyl)-2-{7-methyl-3-oxo-5-phenyl-2H,3H-[1,2,4]triazolo[4,3-c]pyrimidin-2-yl}acetamide chemical structure, C21H18FN5O2, CAS 1251589-77-1](/s/TWRMDXILTODLBA-UHFFFAOYSA-N.svg)
N-(5-Fluoro-2-methylphenyl)-2-{7-methyl-3-oxo-5-phenyl-2H,3H-[1,2,4]triazolo[4,3-c]pyrimidin-2-yl}acetamide
CAS 1251589-77-1C21H18FN5O2
![N-(3-Fluoro-4-methylphenyl)-2-{4-[5-(2-methylphenyl)-1,2,4-oxadiazol-3-yl]-1H-imidazol-1-yl}acetamide chemical structure, C21H18FN5O2, CAS 1251562-13-6](/s/YQZFXAIRHJPFQW-UHFFFAOYSA-N.svg)
N-(3-Fluoro-4-methylphenyl)-2-{4-[5-(2-methylphenyl)-1,2,4-oxadiazol-3-yl]-1H-imidazol-1-yl}acetamide
CAS 1251562-13-6C21H18FN5O2
- N-(2,6-Dimethylphenyl)-2-(1-(4-fluorophenyl)-4-oxo-1,4-dihydro-5H-pyrazolo[3,4-d]pyrimidin-5-yl)acetamide1260952-77-9C21H18FN5O2
- 2-(1-(4-Fluorophenyl)-4-oxo-1,4-dihydro-5H-pyrazolo[3,4-d]pyrimidin-5-yl)-N-(4-methylbenzyl)acetamide1260988-61-1C21H18FN5O2
- 1-(2-Fluorobenzyl)-N-((5-methylfuran-2-yl)methyl)-5-(pyridin-4-yl)-1H-1,2,3-triazole-4-carboxamide1788673-09-5C21H18FN5O2
- (8R,8aR)-2-Acetyl-6-amino-8-(2-fluoro-5-methoxyphenyl)-1,3,8,8a-tetrahydroisoquinoline-5,7,7-tricarbonitrile303967-01-3C21H18FN5O2
- 9-(2-Fluorophenyl)-8-oxo-2-(4-propan-2-ylphenyl)-7H-purine-6-carboxamide898441-90-2C21H18FN5O2
- 8-(4-Fluorophenyl)-N-(2-methoxyphenyl)-4,7-dimethylpyrazolo[5,1-c][1,2,4]triazine-3-carboxamide896668-88-5C21H18FN5O2
- N-(4-Fluorophenyl)-8-(4-methoxyphenyl)-4,7-dimethylpyrazolo[5,1-c][1,2,4]triazine-3-carboxamide920447-14-9C21H18FN5O2
- (1H-Benzo[d]imidazol-5-yl)(4-(5-(4-fluorophenyl)-1,3,4-oxadiazol-2-yl)piperidin-1-yl)methanone1210184-76-1C21H18FN5O2
- N-(4-Fluoro-2-methylphenyl)-2-{5-methyl-3-oxo-7-phenyl-2H,3H-[1,2,4]triazolo[4,3-c]pyrimidin-2-yl}acetamide1251557-66-0C21H18FN5O2
- 1-(4-(5-Ethyl-1,2,4-oxadiazol-3-yl)phenyl)-N-(2-fluorobenzyl)-1H-pyrazole-3-carboxamide1251561-42-8C21H18FN5O2
- N-(4-Ethylphenyl)-2-{4-[5-(4-fluorophenyl)-1,2,4-oxadiazol-3-yl]-1H-imidazol-1-yl}acetamide1251625-91-8C21H18FN5O2
- N-(3,5-Dimethylphenyl)-2-{4-[5-(3-fluorophenyl)-1,2,4-oxadiazol-3-yl]-1H-imidazol-1-yl}acetamide1251631-15-8C21H18FN5O2
- N-((1H-Benzo[d]imidazol-2-yl)methyl)-2-(3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl)propanamide1235018-26-4C21H18FN5O2
- 3-(2-(4-Fluorophenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl)-N-(pyridin-4-ylmethyl)propanamide1326877-13-7C21H18FN5O2
- 2-Fluoro-5-[[5-[3-(4-morpholinyl)phenoxy]-2-pyrimidinyl]amino]benzonitrile1350730-01-6C21H18FN5O2
- N-[3-(4-Fluorobenzyl)-1H-1,2,4-triazol-5-yl]-3-(5-phenyl-1,3-oxazol-2-yl)propanamide1401594-64-6C21H18FN5O2
- N-(4-Fluorobenzyl)-2-imino-1,10-dimethyl-5-oxo-1,5-dihydro-2H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide844447-44-5C21H18FN5O2
- 1-(4-Fluorobenzyl)-2-imino-N,10-dimethyl-5-oxo-1,5-dihydro-2H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide843669-91-0C21H18FN5O2
- N-(4-Fluorobenzyl)-2-(4-oxo-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide863446-80-4C21H18FN5O2
- N-(4-Ethylphenyl)-2-[1-(4-fluorophenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]acetamide852450-36-3C21H18FN5O2
- 2-(1-(3,4-Dimethylphenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-N-(2-fluorophenyl)acetamide852451-32-2C21H18FN5O2
- 2-[1-(2,3-Dimethylphenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]-N-(2-fluorophenyl)acetamide895022-35-2C21H18FN5O2
- 2-[1-(2,3-Dimethylphenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]-N-(3-fluorophenyl)acetamide895022-42-1C21H18FN5O2
- 2-[1-(2,3-Dimethylphenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]-N-(4-fluorophenyl)acetamide895022-50-1C21H18FN5O2
- 2-[1-(2,4-Dimethylphenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]-N-(2-fluorophenyl)acetamide894999-40-7C21H18FN5O2
- 2-[1-(2,4-Dimethylphenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]-N-(3-fluorophenyl)acetamide894999-48-5C21H18FN5O2
- 2-[1-(2,4-Dimethylphenyl)-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]-N-(4-fluorophenyl)acetamide894999-56-5C21H18FN5O2
- 2-(1-(3,4-Dimethylphenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-N-(3-fluorophenyl)acetamide852451-33-3C21H18FN5O2
- 2-(1-(3,4-Dimethylphenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-N-(4-fluorophenyl)acetamide852451-34-4C21H18FN5O2
- N-(1-(3,4-Dimethylphenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-2-(4-fluorophenyl)acetamide899738-52-4C21H18FN5O2
- N-[(4-Fluorophenyl)methyl]-2-{4-methyl-7-oxo-1-phenyl-1H,6H,7H-pyrazolo[3,4-d]pyridazin-6-yl}acetamide941884-20-4C21H18FN5O2
- N-(2-Fluorophenyl)-2-[4-methyl-1-(2-methylphenyl)-7-oxo-1H,6H,7H-pyrazolo[3,4-d]pyridazin-6-yl]acetamide941884-52-2C21H18FN5O2
- N-(3-Fluorophenyl)-2-[4-methyl-1-(2-methylphenyl)-7-oxo-1H,6H,7H-pyrazolo[3,4-d]pyridazin-6-yl]acetamide941973-16-6C21H18FN5O2
- N-(4-Fluorophenyl)-2-[4-methyl-1-(2-methylphenyl)-7-oxo-1H,6H,7H-pyrazolo[3,4-d]pyridazin-6-yl]acetamide941915-31-7C21H18FN5O2
- 2-Ethoxy-N-((1-(3-fluorophenyl)-1H-tetrazol-5-yl)methyl)-1-naphthamide920434-89-5C21H18FN5O2
- N-(2-(5-(2-Fluorobenzyl)-4-oxo-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl)benzamide922082-39-1C21H18FN5O2
- 2-[1-[(2-Fluorophenyl)methyl]-4-oxopyrazolo[3,4-d]pyrimidin-5-yl]-N-(2-methylphenyl)acetamide1203192-79-3C21H18FN5O2
- 1-(4-(5-Ethyl-1,2,4-oxadiazol-3-yl)phenyl)-N-(4-fluorobenzyl)-1H-pyrazole-3-carboxamide1251679-20-5C21H18FN5O2
- 2-(1H-Benzo[d]imidazol-1-yl)-N-(2-(4-(4-fluorophenyl)-6-oxopyrimidin-1(6H)-yl)ethyl)acetamide1351654-42-6C21H18FN5O2
- 5-(4-(1-(4-Methoxybenzyl)-1H-pyrazol-4-yl)pyrimidin-2-yloxy)-2-fluorobenzenamine1020173-36-7C21H18FN5O2
- N-(3-([1,2,4]Triazolo[1,5-a]pyrimidin-6-yl)propyl)-3-(4-fluorophenoxy)benzamide2034615-67-1C21H18FN5O2
- Antifungal agent 772863678-89-9C21H18FN5O2
- 1-Ethyl-N-(4-fluorobenzyl)-2-imino-5-oxo-1,5-dihydro-2H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide848214-57-3C21H18FN5O2
- 8-(4-Fluorophenyl)-N-(3-methoxyphenyl)-4,7-dimethylpyrazolo[5,1-c][1,2,4]triazine-3-carboxamide932192-36-4C21H18FN5O2
- 3-[2-(4-Fluorophenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]-N-(pyridin-2-ylmethyl)propanamide1326887-30-2C21H18FN5O2
- 3-[2-(4-Fluorophenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]-N-(pyridin-3-ylmethyl)propanamide1326917-50-3C21H18FN5O2
- Acetamide, N-(4-fluorophenyl)-2-[[[[4-(2-phenyldiazenyl)phenyl]amino]carbonyl]amino]-1390888-07-9C21H18FN5O2
- Acetamide, N-(3-fluorophenyl)-2-[[[[4-(2-phenyldiazenyl)phenyl]amino]carbonyl]amino]-1390964-19-8C21H18FN5O2
- 1-(4-Fluorophenyl)-4-hydroxy-N-(2-(1-phenyl-1H-pyrazol-3-yl)ethyl)-1H-pyrazole-3-carboxamide1798019-94-9C21H18FN5O2
- Ethyl 6-amino-5,5,7-tricyano-8-(3-fluorophenyl)-3,5,8,8a-tetrahydro-2(1H)-isoquinolinecarboxylate665000-33-9C21H18FN5O2
- N-(4-Fluorobenzyl)-2-(4-oxo-1-(o-tolyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide895011-42-4C21H18FN5O2
- 4-(5-Fluoropyrimidin-2-yl)-3-oxo-N,N-diphenylpiperazine-1-carboxamide2320859-57-0C21H18FN5O2
- 2-[2-[3-(4-Fluorophenyl)-6-oxopyridazin-1-yl]ethylamino]-7,8-dihydro-5H-pyrano[4,3-b]pyridine-3-carbonitrile2380086-07-5C21H18FN5O2
Frequently asked questions
What is the molar mass of C21H18FN5O2?
The molar mass of C21H18FN5O2 is 391.41 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 1 fluorine atom, 5 nitrogen atoms and 2 oxygen atoms. The monoisotopic mass is 391.1445 Da.
How many compounds have the formula C21H18FN5O2?
CompoundList lists 77 compounds with the molecular formula C21H18FN5O2, including N-(2,3-Dimethylphenyl)-2-(1-(4-fluorophenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide, 2-(1-(4-Fluorophenyl)-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)-N-phenethylacetamide, N-(1H-Benzo[d]imidazol-2-yl)-4-(3-(4-fluorophenyl)-6-oxopyridazin-1(6H)-yl)butanamide. 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 C21H18FN5O2?
C21H18FN5O2 has a degree of unsaturation of 15. 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.