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Molecular formula

C16H21N5O3

124 compounds have this formula on CompoundList.

Molar mass
331.38g/mol
Monoisotopic mass
331.1644Da
Atoms
45
Elements
4
Rings plus double bonds
9

The formula C16H21N5O3 describes a molecule made of 16 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 × 1657.99%
    12.011 × 16 = 192.176 g/mol
  • H Hydrogen × 216.39%
    1.008 × 21 = 21.168 g/mol
  • N Nitrogen × 521.13%
    14.007 × 5 = 70.035 g/mol
  • O Oxygen × 314.48%
    15.999 × 3 = 47.997 g/mol
Look up another formula

Compounds with the formula C16H21N5O3

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

Showing 101 to 124 of 124 compounds

5-(Methoxymethyl)-1-[[2-(1-pyrrolidinyl)-5-pyrimidinyl]methyl]-1H-pyrazole-4-carboxylic acid methyl ester chemical structure, C16H21N5O3, CAS 1938129-81-7
5-(Methoxymethyl)-1-[[2-(1-pyrrolidinyl)-5-pyrimidinyl]methyl]-1H-pyrazole-4-carboxylic acid methyl ester
CAS 1938129-81-7C16H21N5O3
N-[(3,4-Dimethoxyphenyl)methyl]-3-[(1H-1,2,3-triazol-1-yl)methyl]azetidine-1-carboxamide chemical structure, C16H21N5O3, CAS 2320175-94-6
N-[(3,4-Dimethoxyphenyl)methyl]-3-[(1H-1,2,3-triazol-1-yl)methyl]azetidine-1-carboxamide
CAS 2320175-94-6C16H21N5O3
tert-Butyl 4-(4-oxo-3H-pyrido[4,3-d]pyrimidin-7-yl)piperazine-1-carboxylate chemical structure, C16H21N5O3, CAS 2460755-88-6
tert-Butyl 4-(4-oxo-3H-pyrido[4,3-d]pyrimidin-7-yl)piperazine-1-carboxylate
CAS 2460755-88-6C16H21N5O3
3-Cyclopropyl-1-[1-(4-methoxypyrimidin-2-yl)piperidin-4-yl]imidazolidine-2,4-dione chemical structure, C16H21N5O3, CAS 2549020-31-5
3-Cyclopropyl-1-[1-(4-methoxypyrimidin-2-yl)piperidin-4-yl]imidazolidine-2,4-dione
CAS 2549020-31-5C16H21N5O3
2,4-Dimethoxy-6-[4-(2-methoxyphenyl)piperazin-1-yl]-1,3,5-triazine chemical structure, C16H21N5O3, CAS 2640966-80-7
2,4-Dimethoxy-6-[4-(2-methoxyphenyl)piperazin-1-yl]-1,3,5-triazine
CAS 2640966-80-7C16H21N5O3
1-(3-Aminobenzoyl)-4-(1,4,5,6-tetrahydropyrimidin-2-yl)piperazine-2-carboxylic acid chemical structure, C16H21N5O3, CAS 681509-52-4
1-(3-Aminobenzoyl)-4-(1,4,5,6-tetrahydropyrimidin-2-yl)piperazine-2-carboxylic acid
CAS 681509-52-4C16H21N5O3
1-((2R,6R)-2-(3-Cyclopropyl-1,2,4-oxadiazol-5-yl)-6-methylmorpholino)-2-(5-methyl-1H-pyrazol-3-yl)ethan-1-one chemical structure, C16H21N5O3, CAS 2223063-12-3
1-((2R,6R)-2-(3-Cyclopropyl-1,2,4-oxadiazol-5-yl)-6-methylmorpholino)-2-(5-methyl-1H-pyrazol-3-yl)ethan-1-one
CAS 2223063-12-3C16H21N5O3
(S)-6-(3-(((3-Cyclopropylisoxazol-4-yl)methyl)amino)pyrrolidin-1-yl)-3-methylpyrimidine-2,4(1H,3H)-dione chemical structure, C16H21N5O3, CAS 2417866-01-2
(S)-6-(3-(((3-Cyclopropylisoxazol-4-yl)methyl)amino)pyrrolidin-1-yl)-3-methylpyrimidine-2,4(1H,3H)-dione
CAS 2417866-01-2C16H21N5O3
4,6-Dimethoxy-2-{4-[(pyrazin-2-yloxy)methyl]piperidin-1-yl}pyrimidine chemical structure, C16H21N5O3, CAS 2549035-15-4
4,6-Dimethoxy-2-{4-[(pyrazin-2-yloxy)methyl]piperidin-1-yl}pyrimidine
CAS 2549035-15-4C16H21N5O3
3-{[1-(3-Methoxy-1-methyl-1H-pyrazole-4-carbonyl)pyrrolidin-3-yl]methoxy}-6-methylpyridazine chemical structure, C16H21N5O3, CAS 2549035-64-3
3-{[1-(3-Methoxy-1-methyl-1H-pyrazole-4-carbonyl)pyrrolidin-3-yl]methoxy}-6-methylpyridazine
CAS 2549035-64-3C16H21N5O3
4-{5-Methylpyrazolo[1,5-a]pyrimidin-7-yl}-2-(morpholine-4-carbonyl)morpholine chemical structure, C16H21N5O3, CAS 2640945-44-2
4-{5-Methylpyrazolo[1,5-a]pyrimidin-7-yl}-2-(morpholine-4-carbonyl)morpholine
CAS 2640945-44-2C16H21N5O3
4-{3-Methyl-3H-imidazo[4,5-b]pyridin-2-yl}-2-(morpholine-4-carbonyl)morpholine chemical structure, C16H21N5O3, CAS 2640978-74-9
4-{3-Methyl-3H-imidazo[4,5-b]pyridin-2-yl}-2-(morpholine-4-carbonyl)morpholine
CAS 2640978-74-9C16H21N5O3
4-{2-Methylpyrazolo[1,5-a]pyrazin-4-yl}-2-(morpholine-4-carbonyl)morpholine chemical structure, C16H21N5O3, CAS 2640892-08-4
4-{2-Methylpyrazolo[1,5-a]pyrazin-4-yl}-2-(morpholine-4-carbonyl)morpholine
CAS 2640892-08-4C16H21N5O3
4-{7-Methyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl}-2-(morpholine-4-carbonyl)morpholine chemical structure, C16H21N5O3, CAS 2640977-23-5
4-{7-Methyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl}-2-(morpholine-4-carbonyl)morpholine
CAS 2640977-23-5C16H21N5O3
4,6-Dimethoxy-2-{3-[(pyrazin-2-yloxy)methyl]piperidin-1-yl}pyrimidine chemical structure, C16H21N5O3, CAS 2770638-31-6
4,6-Dimethoxy-2-{3-[(pyrazin-2-yloxy)methyl]piperidin-1-yl}pyrimidine
CAS 2770638-31-6C16H21N5O3
6-Amino-5-(3,4-dimethoxyphenyl)-2-(piperazin-1-yl)-3,4-dihydropyrimidin-4-one chemical structure, C16H21N5O3, CAS 2172530-23-1
6-Amino-5-(3,4-dimethoxyphenyl)-2-(piperazin-1-yl)-3,4-dihydropyrimidin-4-one
CAS 2172530-23-1C16H21N5O3
tert-Butyl N-methyl-N-{1-oxo-2-[3-(1H-1,2,3,4-tetrazol-5-yl)phenyl]propan-2-yl}carbamate chemical structure, C16H21N5O3, CAS 2228775-77-5
tert-Butyl N-methyl-N-{1-oxo-2-[3-(1H-1,2,3,4-tetrazol-5-yl)phenyl]propan-2-yl}carbamate
CAS 2228775-77-5C16H21N5O3
tert-Butyl 4-(3-azido-5-formylphenyl)piperazine-1-carboxylate chemical structure, C16H21N5O3, CAS 2418650-99-2
tert-Butyl 4-(3-azido-5-formylphenyl)piperazine-1-carboxylate
CAS 2418650-99-2C16H21N5O3
tert-Butyl 4-{4-oxo-3H,4H-pyrido[2,3-d]pyrimidin-7-yl}piperazine-1-carboxylate chemical structure, C16H21N5O3, CAS 2460755-87-5
tert-Butyl 4-{4-oxo-3H,4H-pyrido[2,3-d]pyrimidin-7-yl}piperazine-1-carboxylate
CAS 2460755-87-5C16H21N5O3
tert-Butyl N-methyl-N-{1-oxo-2-[6-(1H-1,2,4-triazol-1-yl)pyridin-3-yl]propan-2-yl}carbamate chemical structure, C16H21N5O3, CAS 2228492-63-3
tert-Butyl N-methyl-N-{1-oxo-2-[6-(1H-1,2,4-triazol-1-yl)pyridin-3-yl]propan-2-yl}carbamate
CAS 2228492-63-3C16H21N5O3
tert-Butyl (4-(6-(1-hydroxyethyl)-1,2,4,5-tetrazin-3-yl)benzyl)carbamate chemical structure, C16H21N5O3, CAS 2171094-75-8
tert-Butyl (4-(6-(1-hydroxyethyl)-1,2,4,5-tetrazin-3-yl)benzyl)carbamate
CAS 2171094-75-8C16H21N5O3
4-(6-(tert-Butylamino)-3H-imidazo[1,2-B][1,2,4]triazol-5-yl)-2,6-dimethoxyphenol chemical structure, C16H21N5O3, CAS 3049389-15-0
4-(6-(tert-Butylamino)-3H-imidazo[1,2-B][1,2,4]triazol-5-yl)-2,6-dimethoxyphenol
CAS 3049389-15-0C16H21N5O3
N-(Aminocarbonyl)-4-(2,3-dihydro-2-oxo-1H-benzo[d]imidazol-1-yl)-1-piperidinepropanamide chemical structure, C16H21N5O3, CAS 2421785-68-2
N-(Aminocarbonyl)-4-(2,3-dihydro-2-oxo-1H-benzo[d]imidazol-1-yl)-1-piperidinepropanamide
CAS 2421785-68-2C16H21N5O3
3-Dimethylamino-2-[2-(4-methoxy-benzyl)-2H-tetrazol-5-yl]-acrylic acid ethyl ester chemical structure, C16H21N5O3
3-Dimethylamino-2-[2-(4-methoxy-benzyl)-2H-tetrazol-5-yl]-acrylic acid ethyl ester
C16H21N5O3

Frequently asked questions

What is the molar mass of C16H21N5O3?

The molar mass of C16H21N5O3 is 331.38 g/mol, calculated from standard atomic weights for 16 carbon atoms, 21 hydrogen atoms, 5 nitrogen atoms and 3 oxygen atoms. The monoisotopic mass is 331.1644 Da.

How many compounds have the formula C16H21N5O3?

CompoundList lists 124 compounds with the molecular formula C16H21N5O3, including 5-(Methoxymethyl)-1-[[2-(1-pyrrolidinyl)-5-pyrimidinyl]methyl]-1H-pyrazole-4-carboxylic acid methyl ester, N-[(3,4-Dimethoxyphenyl)methyl]-3-[(1H-1,2,3-triazol-1-yl)methyl]azetidine-1-carboxamide, tert-Butyl 4-(4-oxo-3H-pyrido[4,3-d]pyrimidin-7-yl)piperazine-1-carboxylate. 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 C16H21N5O3?

C16H21N5O3 has a degree of unsaturation of 9. 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.