CompoundList
Sign in
Molecular formula

C21H18N6O3

36 compounds have this formula on CompoundList.

Molar mass
402.41g/mol
Monoisotopic mass
402.1440Da
Atoms
48
Elements
4
Rings plus double bonds
16

The formula C21H18N6O3 describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 6 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 × 2162.68%
    12.011 × 21 = 252.231 g/mol
  • H Hydrogen × 184.51%
    1.008 × 18 = 18.144 g/mol
  • N Nitrogen × 620.88%
    14.007 × 6 = 84.042 g/mol
  • O Oxygen × 311.93%
    15.999 × 3 = 47.997 g/mol
Look up another formula

Compounds with the formula C21H18N6O3

Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.

Showing 1 to 36 of 36 compounds

N-[4-[(4-Methoxyphenyl)carbamoyl]phenyl]-7-methyl-[1,2,4]triazolo[1,5-a]pyrimidine-2-carboxamide chemical structure, C21H18N6O3, CAS 790270-45-0
N-[4-[(4-Methoxyphenyl)carbamoyl]phenyl]-7-methyl-[1,2,4]triazolo[1,5-a]pyrimidine-2-carboxamide
CAS 790270-45-0C21H18N6O3
2-(4-Oxoquinazolin-3(4H)-yl)-N-(2-((6-(pyridin-2-yl)pyridazin-3-yl)oxy)ethyl)acetamide chemical structure, C21H18N6O3, CAS 1257546-71-6
2-(4-Oxoquinazolin-3(4H)-yl)-N-(2-((6-(pyridin-2-yl)pyridazin-3-yl)oxy)ethyl)acetamide
CAS 1257546-71-6C21H18N6O3
2-(1H-Indol-3-yl)-N-(3-methyl-1-(4-oxo-4,5,6,7-tetrahydro-3H-cyclopenta[d]pyrimidin-2-yl)-1H-pyrazol-5-yl)-2-oxoacetamide chemical structure, C21H18N6O3, CAS 1002482-95-2
2-(1H-Indol-3-yl)-N-(3-methyl-1-(4-oxo-4,5,6,7-tetrahydro-3H-cyclopenta[d]pyrimidin-2-yl)-1H-pyrazol-5-yl)-2-oxoacetamide
CAS 1002482-95-2C21H18N6O3
4,4',4''-((1,3,5-Triazine-2,4,6-triyl)tris(oxy))trianiline chemical structure, C21H18N6O3, CAS 22065-34-5
4,4',4''-((1,3,5-Triazine-2,4,6-triyl)tris(oxy))trianiline
CAS 22065-34-5C21H18N6O3
p,p',p''-(1,3,5-Triazine-2,4,6-triyltriimino)trisphenol chemical structure, C21H18N6O3, CAS 85896-27-1
p,p',p''-(1,3,5-Triazine-2,4,6-triyltriimino)trisphenol
CAS 85896-27-1C21H18N6O3
N~2~-(1,3-benzodioxol-5-ylmethyl)-N~4~-(4-methoxyphenyl)pteridine-2,4-diamine chemical structure, C21H18N6O3, CAS 946289-69-6
N~2~-(1,3-benzodioxol-5-ylmethyl)-N~4~-(4-methoxyphenyl)pteridine-2,4-diamine
CAS 946289-69-6C21H18N6O3
N-[Amino-[(4-methylquinazolin-2-yl)amino]methylidene]-3-(1,3-dioxoisoindol-2-yl)propanamide chemical structure, C21H18N6O3, CAS 667430-90-2
N-[Amino-[(4-methylquinazolin-2-yl)amino]methylidene]-3-(1,3-dioxoisoindol-2-yl)propanamide
CAS 667430-90-2C21H18N6O3
1,5-Dimethyl-8-(4-phenylmethoxyphenyl)purino[8,9-c][1,2,4]triazole-2,4-dione chemical structure, C21H18N6O3, CAS 941904-10-5
1,5-Dimethyl-8-(4-phenylmethoxyphenyl)purino[8,9-c][1,2,4]triazole-2,4-dione
CAS 941904-10-5C21H18N6O3
N-(1-((2,3-Dihydrobenzo[b][1,4]dioxin-2-yl)methyl)-1H-pyrazol-4-yl)-2-phenyl-2H-1,2,3-triazole-4-carboxamide chemical structure, C21H18N6O3, CAS 1797022-48-0
N-(1-((2,3-Dihydrobenzo[b][1,4]dioxin-2-yl)methyl)-1H-pyrazol-4-yl)-2-phenyl-2H-1,2,3-triazole-4-carboxamide
CAS 1797022-48-0C21H18N6O3
N-(4-Acetamidophenyl)-2-(4-oxo-1-phenylpyrazolo[3,4-d]pyrimidin-5-yl)acetamide chemical structure, C21H18N6O3, CAS 841211-69-6
N-(4-Acetamidophenyl)-2-(4-oxo-1-phenylpyrazolo[3,4-d]pyrimidin-5-yl)acetamide
CAS 841211-69-6C21H18N6O3
1-((3-(3,4-Dimethylphenyl)-1,2,4-oxadiazol-5-yl)methyl)-5-phenyl-1,6a-dihydropyrrolo[3,4-d][1,2,3]triazole-4,6(3aH,5H)-dione chemical structure, C21H18N6O3, CAS 1251696-18-0
1-((3-(3,4-Dimethylphenyl)-1,2,4-oxadiazol-5-yl)methyl)-5-phenyl-1,6a-dihydropyrrolo[3,4-d][1,2,3]triazole-4,6(3aH,5H)-dione
CAS 1251696-18-0C21H18N6O3
N-[3-(2-Methoxyphenyl)-1H-1,2,4-triazol-5-yl]-2-(6-oxo-3-phenylpyridazin-1(6H)-yl)acetamide chemical structure, C21H18N6O3, CAS 1442079-45-9
N-[3-(2-Methoxyphenyl)-1H-1,2,4-triazol-5-yl]-2-(6-oxo-3-phenylpyridazin-1(6H)-yl)acetamide
CAS 1442079-45-9C21H18N6O3
(3-(4-(Phenoxymethyl)-1H-1,2,3-triazol-1-yl)azetidin-1-yl)(5-(pyridin-3-yl)isoxazol-3-yl)methanone chemical structure, C21H18N6O3, CAS 2034592-64-6
(3-(4-(Phenoxymethyl)-1H-1,2,3-triazol-1-yl)azetidin-1-yl)(5-(pyridin-3-yl)isoxazol-3-yl)methanone
CAS 2034592-64-6C21H18N6O3
4-(5,11-Dioxo-6a,11-dihydroisoindolo[2,1-a]quinazolin-6(5H)-yl)-N-(1H-1,2,4-triazol-3-yl)butanamide chemical structure, C21H18N6O3, CAS 1630851-29-4
4-(5,11-Dioxo-6a,11-dihydroisoindolo[2,1-a]quinazolin-6(5H)-yl)-N-(1H-1,2,4-triazol-3-yl)butanamide
CAS 1630851-29-4C21H18N6O3
9-Benzyl-3-(4-methoxyphenyl)-5-methyl-5H,6H,7H,8H,9H-[1,2,4]triazolo[3,4-h]purine-6,8-dione chemical structure, C21H18N6O3, CAS 921577-64-2
9-Benzyl-3-(4-methoxyphenyl)-5-methyl-5H,6H,7H,8H,9H-[1,2,4]triazolo[3,4-h]purine-6,8-dione
CAS 921577-64-2C21H18N6O3
2-Oxo-N-(2-((6-(pyridin-4-ylamino)pyridazin-3-yl)amino)ethyl)-2H-chromene-3-carboxamide chemical structure, C21H18N6O3, CAS 1021250-41-8
2-Oxo-N-(2-((6-(pyridin-4-ylamino)pyridazin-3-yl)amino)ethyl)-2H-chromene-3-carboxamide
CAS 1021250-41-8C21H18N6O3
N-(2-(6-Oxo-3-(pyridin-3-yl)pyridazin-1(6H)-yl)ethyl)-2-(4-oxoquinazolin-3(4H)-yl)acetamide chemical structure, C21H18N6O3, CAS 1207046-62-5
N-(2-(6-Oxo-3-(pyridin-3-yl)pyridazin-1(6H)-yl)ethyl)-2-(4-oxoquinazolin-3(4H)-yl)acetamide
CAS 1207046-62-5C21H18N6O3
3-[3-(5-Ethoxypyrimidin-2-yl)benzoyl]-1-(1-methyl-1H-pyrazol-4-yl)pyridazin-4(1H)-one chemical structure, C21H18N6O3, CAS 1314394-82-5
3-[3-(5-Ethoxypyrimidin-2-yl)benzoyl]-1-(1-methyl-1H-pyrazol-4-yl)pyridazin-4(1H)-one
CAS 1314394-82-5C21H18N6O3
N-(2-(3-Hydroxy-2-oxoquinoxalin-1(2H)-yl)ethyl)-4-(pyrimidin-2-ylamino)benzamide chemical structure, C21H18N6O3, CAS 1435901-37-3
N-(2-(3-Hydroxy-2-oxoquinoxalin-1(2H)-yl)ethyl)-4-(pyrimidin-2-ylamino)benzamide
CAS 1435901-37-3C21H18N6O3
3-(1-(2-Oxo-1,2-dihydro-1,8-naphthyridine-3-carbonyl)piperidin-4-yl)pyrido[2,3-d]pyrimidin-4(3H)-one chemical structure, C21H18N6O3, CAS 2034225-02-8
3-(1-(2-Oxo-1,2-dihydro-1,8-naphthyridine-3-carbonyl)piperidin-4-yl)pyrido[2,3-d]pyrimidin-4(3H)-one
CAS 2034225-02-8C21H18N6O3
N-(3-Cyclopropyl-1-(4-methyl-6-oxo-1,6-dihydropyrimidin-2-yl)-1H-pyrazol-5-yl)-2-(1H-indol-3-yl)-2-oxoacetamide chemical structure, C21H18N6O3, CAS 1226450-43-6
N-(3-Cyclopropyl-1-(4-methyl-6-oxo-1,6-dihydropyrimidin-2-yl)-1H-pyrazol-5-yl)-2-(1H-indol-3-yl)-2-oxoacetamide
CAS 1226450-43-6C21H18N6O3
N-(3-Cyclopropyl-1-(4-methyl-6-oxo-1,6-dihydropyrimidin-2-yl)-1H-pyrazol-5-yl)-5-phenylisoxazole-3-carboxamide chemical structure, C21H18N6O3, CAS 1207053-21-1
N-(3-Cyclopropyl-1-(4-methyl-6-oxo-1,6-dihydropyrimidin-2-yl)-1H-pyrazol-5-yl)-5-phenylisoxazole-3-carboxamide
CAS 1207053-21-1C21H18N6O3
N-(4-Acetylphenyl)-2-(3-benzyl-7-oxo-3H-[1,2,3]triazolo[4,5-d]pyrimidin-6(7H)-yl)acetamide chemical structure, C21H18N6O3, CAS 863018-25-1
N-(4-Acetylphenyl)-2-(3-benzyl-7-oxo-3H-[1,2,3]triazolo[4,5-d]pyrimidin-6(7H)-yl)acetamide
CAS 863018-25-1C21H18N6O3
N-(3-Acetamidophenyl)-2-(4-oxo-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide chemical structure, C21H18N6O3, CAS 852440-22-3
N-(3-Acetamidophenyl)-2-(4-oxo-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-yl)acetamide
CAS 852440-22-3C21H18N6O3

Frequently asked questions

What is the molar mass of C21H18N6O3?

The molar mass of C21H18N6O3 is 402.41 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 6 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 402.1440 Da.

How many compounds have the formula C21H18N6O3?

CompoundList lists 36 compounds with the molecular formula C21H18N6O3, including N-[4-[(4-Methoxyphenyl)carbamoyl]phenyl]-7-methyl-[1,2,4]triazolo[1,5-a]pyrimidine-2-carboxamide, 2-(4-Oxoquinazolin-3(4H)-yl)-N-(2-((6-(pyridin-2-yl)pyridazin-3-yl)oxy)ethyl)acetamide, 2-(1H-Indol-3-yl)-N-(3-methyl-1-(4-oxo-4,5,6,7-tetrahydro-3H-cyclopenta[d]pyrimidin-2-yl)-1H-pyrazol-5-yl)-2-oxoacetamide. 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 C21H18N6O3?

C21H18N6O3 has a degree of unsaturation of 16. 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.