Molecular formula

C₂₁H₂₃N₅O

130 compounds have this formula on CompoundList.

Molar mass: 361.45g/mol
Monoisotopic mass: 361.1903Da
Atoms: 50
Elements: 4
Rings plus double bonds: 13

The formula C21H23N5O describes a molecule made of 21 carbon atoms, 23 hydrogen atoms, 5 nitrogen atoms and 1 oxygen atom. 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 × 2169.78%
12.011 × 21 = 252.231 g/mol
H Hydrogen × 236.41%
1.008 × 23 = 23.184 g/mol
N Nitrogen × 519.38%
14.007 × 5 = 70.035 g/mol
O Oxygen × 14.43%
15.999 × 1 = 15.999 g/mol

Look up another formula

Compounds with the formula C21H23N5O

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

Showing 1 to 100 of 130 compounds

2-[(4-Phenyl-1-piperazinyl)methyl]-3,6-dihydro-2H-imidazo[1,2-c]quinazolin-5-one

CAS 139047-55-5C₂₁H₂₃N₅O

$7-Methyl-3-[2-(morpholin-4-yl)ethyl]-1,3,10-triazatetracyclo[7.7.0.0^{2,6}.0^{11,16}]hexadeca-2(6),7,9,11,13,15-hexaene-8-carbonitrile chemical structure, C21H23N5O, CAS 868153-01-9$

7-Methyl-3-[2-(morpholin-4-yl)ethyl]-1,3,10-triazatetracyclo[7.7.0.0^{2,6}.0^{11,16}]hexadeca-2(6),7,9,11,13,15-hexaene-8-carbonitrile

CAS 868153-01-9C₂₁H₂₃N₅O

11-(4-(2-Hydroxyethyl)piperazin-1-yl)-2,3-dihydro-1H-benzo[4,5]imidazo[1,2-a]cyclopenta[d]pyridine-4-carbonitrile

CAS 384352-31-2C₂₁H₂₃N₅O

5-[4-(4-Methylpiperazino)phenyl]-N-phenyl-1H-pyrazole-1-carboxamide

CAS 321998-95-2C₂₁H₂₃N₅O

(E)-N'-(4-(Dimethylamino)benzylidene)-3-(4-ethylphenyl)-1H-pyrazole-5-carbohydrazide

CAS 403650-65-7C₂₁H₂₃N₅O

(4-Benzylpiperazin-1-yl)(1-(p-tolyl)-1H-1,2,3-triazol-4-yl)methanone

CAS 951598-02-0C₂₁H₂₃N₅O

N-Tert-Butyl-2-[4-(3,5-Dimethyl-1,2-Oxazol-4-Yl)phenyl]imidazo[1,2-A]pyrazin-3-Amine

CAS 1635437-39-6C₂₁H₂₃N₅O

(4-Benzhydrylpiperazin-1-yl)(1-methyl-1H-1,2,3-triazol-4-yl)methanone

CAS 1207040-41-2C₂₁H₂₃N₅O

N-(4-((4-(Dimethylamino)-6-methylpyrimidin-2-yl)amino)phenyl)-2-phenylacetamide

CAS 2327925-35-7C₂₁H₂₃N₅O

1-(4-(3-(Pyridin-3-yl)-1H-pyrazol-5-yl)piperazin-1-yl)-2-(o-tolyl)ethanone

CAS 1455461-66-1C₂₁H₂₃N₅O

1-(2-Phenylethyl)-3-(3-{5H,6H,7H,8H-[1,2,4]triazolo[4,3-A]pyridin-3-YL}phenyl)urea

CAS 1775510-76-3C₂₁H₂₃N₅O

1-[1-(3,4-Dimethylphenyl)-1H-1,2,3-triazole-4-carbonyl]-4-phenylpiperazine

CAS 1105241-47-1C₂₁H₂₃N₅O

N-Butyl-2-[4-(3,5-dimethyl-4-isoxazolyl)phenyl]-imidazo[1,2-a]pyrazin-3-amine

CAS 1635437-46-5C₂₁H₂₃N₅O

N-tert-Butyl-2-(4-(3,5-dimethylisoxazol-4-yl)phenyl)imidazo[1,2-a]pyrimidin-3-amine

CAS 1635437-38-5C₂₁H₂₃N₅O

$N-(4-Methoxyphenyl)-11,13-dimethyl-4-propyl-3,7,8,10-tetraazatricyclo[7.4.0.0^{2,7}]trideca-1,3,5,8,10,12-hexaen-6-amine chemical structure, C21H23N5O, CAS 890623-23-1$

N-(4-Methoxyphenyl)-11,13-dimethyl-4-propyl-3,7,8,10-tetraazatricyclo[7.4.0.0^{2,7}]trideca-1,3,5,8,10,12-hexaen-6-amine

CAS 890623-23-1C₂₁H₂₃N₅O

1-[4-(Diphenylmethyl)piperazin-1-yl]-2-(1H-1,2,4-triazol-1-yl)ethan-1-one

CAS 860788-53-0C₂₁H₂₃N₅O

N'-(4,6-Dimethylpyrimidin-2-yl)-N-[4-(2-phenylethoxy)phenyl]guanidine

CAS 374098-64-3C₂₁H₂₃N₅O

$5-[4-(Azepan-1-yl)pyridine-2-carbonyl]-2,5,7-triazatricyclo[6.4.0.0^{2,6}]dodeca-1(8),6,9,11-tetraene chemical structure, C21H23N5O, CAS 1421500-96-0$

5-[4-(Azepan-1-yl)pyridine-2-carbonyl]-2,5,7-triazatricyclo[6.4.0.0^{2,6}]dodeca-1(8),6,9,11-tetraene

CAS 1421500-96-0C₂₁H₂₃N₅O

N-(1-Benzylpiperidin-4-yl)-4-(1H-pyrazol-1-yl)picolinamide

CAS 1421483-49-9C₂₁H₂₃N₅O

4-Benzyl-1-[4-methyl-3-(1H-tetrazol-1-yl)benzoyl]piperidine

CAS 1219583-30-8C₂₁H₂₃N₅O

N-(6-(4-Methylpiperazin-1-yl)pyrimidin-4-yl)-2-(naphthalen-1-yl)acetamide

CAS 1396855-61-0C₂₁H₂₃N₅O

2-(1-Methyl-1H-indol-3-yl)-N-(3-{2-methylpyrazolo[1,5-a]pyrimidin-6-yl}propyl)acetamide

CAS 1797862-47-5C₂₁H₂₃N₅O

(1H-Indol-3-yl)(4-(5,6,7,8-tetrahydrocinnolin-3-yl)piperazin-1-yl)methanone

CAS 2034277-37-5C₂₁H₂₃N₅O

N-(2,4-Dimethylphenyl)-5-methyl-7-phenyl-4,5,6,7-tetrahydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide

CAS 1212425-12-1C₂₁H₂₃N₅O

Frequently asked questions

Still have a question?

The help centre explains buying, quotes and supplier badges step by step, or you can write to our team.

Help centre Contact us

What is the molar mass of C21H23N5O?

The molar mass of C21H23N5O is 361.45 g/mol, calculated from standard atomic weights for 21 carbon atoms, 23 hydrogen atoms, 5 nitrogen atoms and 1 oxygen atom. The monoisotopic mass is 361.1903 Da.

How many compounds have the formula C21H23N5O?

CompoundList lists 130 compounds with the molecular formula C21H23N5O, including 2-[(4-Phenyl-1-piperazinyl)methyl]-3,6-dihydro-2H-imidazo[1,2-c]quinazolin-5-one, 7-Methyl-3-[2-(morpholin-4-yl)ethyl]-1,3,10-triazatetracyclo[7.7.0.0^{2,6}.0^{11,16}]hexadeca-2(6),7,9,11,13,15-hexaene-8-carbonitrile, 11-(4-(2-Hydroxyethyl)piperazin-1-yl)-2,3-dihydro-1H-benzo[4,5]imidazo[1,2-a]cyclopenta[d]pyridine-4-carbonitrile. 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 C21H23N5O?

C21H23N5O has a degree of unsaturation of 13. 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.